West Nile Blog: Mosquito spraying continues across North Texas

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WFAA

Posted on August 17, 2012 at 8:31 PM

Updated Friday, Nov 1 at 12:15 PM

Check back here for the latest information.


9:50a The city’s first ground spraying for mosquitoes this year is scheduled to begin at 9 p.m. Sunday, Aug. 26, in five specific areas. The designated areas have either had a mosquito trap with a positive test result for West Nile Virus or are the location of a resident diagnosed and confirmed by Tarrant County Public Health as having WNV. The city received its first positive test from a mosquito trap in Mansfield in early August. Recently there have been five human cases of  WNV reported in Mansfield. Three of those human cases were confirmed on Aug. 16, triggering the city’s established policy for mosquito control. - City of Mansfield

9:44a Town Council to Hold Emergency Meeting to Discuss Aerial Mosquito Control Spraying
The Flower Mound Town Council will hold an emergency meeting and public hearing at 6 p.m. tonight, August 23, at Town Hall to discuss aerial spraying and other options related to mosquito control. The meeting was called in response to Denton County Judge Mary Horn’s declaration of a West Nile Virus Health Emergency on August 22, requesting the Department of State Health Services to make additional resources available to Denton County for aerial mosquito spraying. - City of Flower Mound

TUESDAY, AUGUST 21

4:35 p Plano has reported its first death from West Nile in zip code 75052. The city's logged 17 human cases so far. Collin County's Health Department reports 36 confirmed cases of West Nile. Only the Plano death has been fatal. 

3:30p During an afternoon news conference, we learned a few new things. (If you'd prefer a longer narrative, you can find that here): 

  • The 11th victim is a woman in her 80s. No word on whether an existing medical condition played a role in her death.
  • President Barack Obama has been briefed by the Centers for Disease Control regarding West Nile in North Texas.
  • Duncanville, Ferris, Rowlett, Sunnyvale, Seagoville, Wilmer and portions of Mesquite south of Interstate 30 have all signed on for aerial spraying. Dallas County is still awaiting word from Balch Springs, Cedar Hill and Lancaster regarding whether they'll opt in to the service.
  • The CDC will arrive in Dallas Wednesday night and begin analyzing mosquito pools. Although, per Mayor Mike Rawlings, it may take between 10 and 14 days before they discover "if we've got a new outbreak," in his words.
  • The city of Dallas will not spray for a third day. Rawlings said 360,000 acres have been sprayed successfully. 

12:43p Dallas County Health and Human Services (DCHHS) has confirmed the county's eleventh West Nile Virus related death in Dallas County. DCHHS has been notified that a patient who lived in zip code 75225 was diagnosed with West Nile Neuroinvasive Disease and died. - Dallas County Health and Human Services


MONDAY, AUGUST 20

12:09p Dallas County reports the first full application for aerial mosquito spraying for the city of Richardson was completed yesterday, Sunday, August 19, 2012. A second operation to spray the entire city is expected to take place this evening at 9 p.m., Monday, August 20, 2012. Planes will depart the airport at approximately 8 p.m. and may be seen flying over the city before the 9 p.m. start time as they survey the landmarks in the spray area for flight hazards. Spraying should conclude at approximately 2 a.m. - City of Richardson

SATURDAY, AUGUST 18

4:53p Dallas Mayor Mike Rawlings and Dallas County Judge Clay Jenkins have scheduled a news conference at 2 o'clock Sunday afternoon to discuss the next round of aerial spraying for mosquitoes. - WFAA

2:17p Dallas County officials have canceled plans for a third day of aerial mosquito spraying on Saturday night, citing unfavorable weather conditions. Operations are tentatively set to resume Sunday night, with additional spraying on Monday night. - WFAA

2:06p The City of Fort Worth has revised its plans for ground-level mosquito spraying in the 76104 and 76110 zip codes. Workers will begin at 2 a.m. Sunday rather than 10 p.m. Saturday because of a scheduled event in the Magnolia Avenue area. The city says the operation should be complete by 4 a.m. - WFAA

9:39a Garland says Friday night's aerial mosquito spraying campaign was not able to cover all of the city before planes were grounded due to stormy weather. CLICK FOR COVERAGE MAP. The city says state health officials will attempt to resume flights on Saturday night, and may begin as early as 8:30 p.m. The aerial spraying could continue until as late as 5 a.m. Sunday. - WFAA

12:30a Dallas County's aerial planned spraying operation was canceled for the rest of the evening due to poor weather. - Dynamic Aviation


FRIDAY, AUGUST 17

10:50p All four aircraft being used to spray Dallas County for mosquitoes are now grounded as weather conditions deteriorate, according to the company contracted to provide the service. - Dynamic Aviation

10:07p For the first time in two decades, Fort Worth is spraying for mosquitoes — not from the air like Dallas, but on the ground. Workers just started spraying parts of the 76104 and 76110 zip codes, and they'll continue the effort until 4 a.m. Saturday. Spraying is planned to continue on Saturday and Sunday nights. - WFAA

10:05p All four aircraft remain in the sky at this hour in an attempt to maximize the coverage of insecticide spraying over Dallas County. If the weather impedes the full spraying pattern, planes may have to return to the skies over the weekend. - Teresa Woodard reporting

9:46p A thunderstorm is moving northeast from Addison to Plano. A severe thunderstorm warning is in effect until 10:45 p.m. for north central Dallas County, southeastern Denton County and southwestern Collin County.  - Chief Meteorologist Pete Delkus

9:30p Aircraft abandoned their mission over Garland due to deteriorating weather conditions. - Teresa Woodard reporting

8:59p Aerial spraying resumed in the northern sectors of Dallas County on Friday night, close to the planned schedule. - Teresa Woodard reporting

8:58p Fort Worth has planned an "informational community meeting" on Tuesday, August 21 to answer questions about the city's battle against the mosquitoes that carry West Nile virus in zip ocdes 76137 and 76244. The meeting will start at 6:30 p.m. at Summerglen Library, 4205 Basswood. - City of Fort Worth

8:22p Four aircraft are now aloft, hoping that weather conditions will hold up so they can resume spraying parts of Dallas County for disease-carrrying mosquitoes. - Teresa Woodard reporting

8:06p There's a severe thunderstorm warning for southeastern Dallas County and northeastern Ellis County until 8:45 p.m. -- that's away from the sections that are planned for spraying on Friday night. But temperatures are dropping fast at Executive Airport as the four mosquito-spraying aircraft prepare to take off. - Teresa Woodard reporting

8:01p As of now, aerial spraying in Dallas County is still a "go." Crews are keeping a close eye on the skies; there is lightning at Executive Airport now, but the operation has not yet been called off. They are hoping the storm system remains to the south and the areas they want to target first may be in the clear. The engines of the four aircraft have not yet been fired up. Dallas County Judge Clay Jenkins is looking at the planes and talking with the pilots again. - Teresa Woodard reporting

7:55p For the planned aerial spraying in Dallas County Friday night, two planes will start in Carrollton-Farmers Branch and the other two will be deployed over Garland. - Teresa Woodard reporting

7:15p WFAA photojournalist Alan McKenzie drove into a storm cell in Fort Worth with very small hail. If the storm system moves into Dallas County, that could delay or cancel overnight plans for aerial mosquito spraying. - Alan McKenzie reporting

6:53p Arlington has just announced plans for targeted mosquito spraying in a number of areas around the city. If the weather cooperates, the ground spraying will begin Sunday and continue through Tuesday between 10:30 p.m. and 4 a.m. Arlington will utilize a low concentration of Envion, a water-based Permethrin in specific areas where larviciding and other measures have not proven effective. Click for more information.  - City of Arlington

5:51p Contrary to some reports, spraying will not begin until 9 p.m. Laura McGowan, a spokeswoman for Clarke, the company that makes the pesticide Duet, says the planes may launch as early as 7:45 p.m. but will not be spraying until 9 p.m. or just before 9 p.m. - Teresa Woodard

5:47p : So far, 62.8 square miles inside the city of Dallas have been sprayed. That leaves 272.6 square miles remaining that will be sprayed tonight. - Teresa Woodard

5:45p Click for the latest available map of areas to be sprayed for mosquitoes in Dallas County on Friday night. - Dallas County

5:22p Wet weather could intrude on plans to spray hundreds of square miles of Dallas County for mosquito infestation on Friday night.

There is a 30 percent chance of rain late Friday into early Saturday in Dallas County and the rest of North Texas, and the chance of rain increases to 60 percent on Saturday. The aircarft that spray for mosquitoes require dry weather and light winds to complete their work. - Chief Meteorologist Pete Delkus

5:10p  Neither Dallas nor Highland Park will wash public playgrounds after aerial mosquito spraying. Both cities said the chemical used, Duet, breaks down naturally in sunlight. - Jason Whitely

4:49p : Dallas ISD on aerial mosquito spraying: "Our grounds crews will be washing the playground equipment after the spraying is complete. They are planning to begin tomorrow." - Jason Whitely reporting

4:47p Richardson ISD said several of its campuses were under the aerial mosquito spraying on Thursday night. A spokeswoman said the district will let the chemical, Duet, break down in sunlight. But if it doesn’t rain by the time school starts on August 27, then the district said it would powerwash playground equipment at all of its campuses. - Jason Whitely reporting

4:31p Fort Worth begins a ground spraying campaign against the mosquitoes that carry West Nile virus on Friday night. The foggers will target two zip codes — 76104 and 76110. See the City of Fort Worth website for more information.  - WFAA

4:25p Four aircrafts will be used in Friday night's air assault on mosquitoes in Dallas County, double the number used on Thursday. They will attempt to cover the remaining 48,000 acres that could not be reached in the initial spraying, including Richardson, Garland and parts of Mesquite north of Interstate 30.

Weather permitting, the planes also hope to reach the other Dallas County communities that have asked to be a part of the spraying program: Coppell, Carrollton, Addison, Farmers Branch and Grand Prairie. It's expected that aircraft will be in action starting at 9 p.m., one hour earlier than Thursday night. - Brad Watson reporting

4:16p After confirming two positive cases of West Nile Virus in mosquitoes, McKinney officials said ground spraying is set to take place late Monday through Wednesday to control the West Nile virus carrier.

The initial spraying will begin at 10 p.m. Monday, August 20 and continue through 6 a.m. Tuesday, August 21 in an area south of Virginia Parkway, west of U.S. 75, north of Eldorado Parkway and east of Ridge Road (click for MAP).

At 10 p.m. Tuesday, workers will resume spraying in the area south of University Drive, west of Ridge Road, north of Eldorado Parkway and East of Custer Road (click for MAP). That effort is scheduled to conclude at 6 a.m. Wednesday, August 22.

Signs will be posted in areas to be sprayed, and residents with questions can visit the city's mosquito control website or call 972-547-7447. To report standing water, illegal dumping or increased mosquito activity, call the city's West Nile information line at 972-547-7473. - City of McKinney

4:12p Farmers Branch officials confirm that their city is scheduled to be a part of the aerial spraying for mosquitoes on Friday night. The spraying will commence some time after 9 o'clock, although the timing could change depending on wind and weather conditions.

There was no timetable for when the aircraft would be over Farmers Branch. The city is broadcasting a message on West Nile spraying on its radio station at 1610 AM. Information will also be available by recorded message at 972-919-9868 and at the Farmers Branch website. - City of Farmers Branch

3:12p Trucks provided by the Department of State Health Services will continue fogging for West Nile mosquitoes tonight and tomorrow night in DeSoto. DeSoto’s Environmental Health Specialist authorized two more days of spraying in line with recommendations from the DSHS and CD that require three consecutive days of spraying to eliminate all stages of the mosquito life cycle and produce a 90 percent kill rate. - City of DeSoto

2:28p The total number of human cases in Dallas County is 242. - City of Dallas

2:18p Dallas County reports aerial spraying to be conducted tonight Friday, August 17, 2012 should include parts of Richardson not sprayed during Thursday night’s mosquito control operations. The portion of Richardson that was sprayed is located between the northern and southern city limits east of US 75 between Central Expressway and approximately Plano Road. - City of Richardson

1:34p Spraying will likely start at 9 p.m. in areas not covered last night, including far east Casa View and Garland (see map). - Dallas County Judge Clay Jenkins

1:10p What Dallas County covered last night:

  • All of University Park
  • All of Highland Park
  • Portion of Richardson
  • Portion of Dallas (see map: pink is areas covered; squiggly lines are the path of the plane)

The priority tonight will be to complete the original block that was missed last night (see  map) and will include the rest of Dallas (not reflected on this map but being rendered). On Saturday, weather permitting, crews will cover anything missed tonight. The City of Dallas anticipates having a new map, which will reflect an accurate picture of Dallas areas still needing coverage this afternoon.  - City of Dallas

12:47p Owner of organic garden says he'll wait 24 hours before harvesting veggies to let aerial mosquito spray chemical break down. Then he plans to wash vegetables twice before eating, saying they should be safe. - Jason Whitely, WFAA

12:22p An update will be given at a news conference at the Dallas County Commissioners Court. - WFAA

11:59a: University Park said it got no medical calls last night after 8:00p from anyone complaining of adverse reactions to the aerial mosquito spraying. - Jason Whitely, WFAA

11:45a Due to weather conditions, the aerial spraying for mosquitoes which was scheduled by Dallas County for last night was not completed. Therefore, aerial spraying has been rescheduled in Mesquite for tonight, beginning as early as 8:30 p.m. The area to be sprayed tonight includes Mesquite, north of Highway 30. - City of Mesquite

11:32a Dallas County Judge Clay Jenkins says aerial spraying can begin as early as 8:30 p.m. - WFAA.com

11:06a Weather conditions did not allow state health officials to complete last night’s aerial spraying schedule to control mosquitoes carrying West Nile Virus.

Operations stopped before Garland was sprayed. At this time, Garland officials are waiting to find out when Garland will be rescheduled. The city will communicate updated information via E-News (e-mail blasts), CodeRED, the City website and Twitter as soon as it is confirmed. - City of Garland

10:35a Allen has reported its fourth case of West Nile. - WFAA.com

8:25a There are now four planes ready for day two of aerial spraying. That is two more than Thursday. About 52,000 acres were sprayed overnight, which was about half of the targeted areas. Rain that came into the area cut the spraying short around midnight. However, more spraying is planned for tonight. It is not known at this time if there will be more spraying into the weekend. - WFAA.com

7:52a The tarps have been lifted from the ponds protecting fish at the Dallas Arboretum. There have been no reports of problems. - WFAA.com

6:34a If someone had told me two days before this decision that I would be advocating for spraying pesticides from the air over ... Dallas County, I would have told them there was no way that was going to happen. We buy only organic; we garden organically. But, I assembled the top scientists in the United States here locally, and the top health official in the state of Texas and I listened to the science and I prayed about it. I listened to the opposite side that was in the room with me and then I went with my gut, and my gut was let's follow the signs and let's get this done. - Dallas County Judge Clay Jenkins

6:32a Two planes were wheels up at 10 o'clock and spraying by 10:12, at midnight a rain system moved into the spray block causing a rain delay. Both planes landed and the weather system was watched until 2 o'clock, at which time the mission was postponed for completion of Friday evening. A total of 52,352 acres were sprayed of the 100,845 assigned block acreage. We'll look at our weather patterns tonight and see if we can add to the remaining block. We have two planes coming in today. If we have good weather, we can get 124,000 acres every three-and-a-half hours with two planes, so four planes would give us right at a quarter of a million acres. So, weather permitting, we'll try to get that, - Dallas County Judge Clay Jenkins

6:31a While the exact area to be sprayed tonight is not yet known, it is known North Dallas, University Park and Highland Park were all sprayed. While the mission started as planned around 10 p.m., planes were stopped after rains came into the area around midnight. - Cynthia Vega, WFAA.com

6:02a There will be more spraying tonight in Dallas County. Officials will meet later today to discuss exactly what areas will be targeted for aerial spraying. - WFAA.com


THURSDAY, AUGUST 16

11:15p Spraying is underway across 106,000 acres of Dallas County. Judge Clay Jenkins says he's "relieved." Calls it "toughest decision" he's ever faced as an elected official. He watched planes take off from Executive Airport.

Planes began at 10 p.m. should spray for about two-and-a-half hours, then touch down, re-fuel and re-stock with pesticide before making another pass overhead. Will likely be done by 3 to 4 a.m.

It's unclear exactly what area will be sprayed Friday, but two additional planes are touching down overnight, meaning more territory can be covered.

Even as planes were nearby, people were outside in Uptown. We talked to two young women outside a coffee shop enjoying what was a pleasant evening in Dallas. Both said they supported aerial spraying, noting they were more scared of West Nile than exposure to pesticide. - Teresa Woodard, WFAA

9:57p The planes have taken off and will be spraying the target area above until 1 a.m. - WFAA.com staff

8:42p It's a go. Planes are being loaded with pesticide right now, should be wheels up around 9:30 p.m. - Teresa Woodard, WFAA

7:50p At Executive Airport now. Official decision will come at 8:30 p.m., but flight operations staff says weather looks good. As long as there is no rain, spraying will be done. - Teresa Woodard, WFAA

7:29p One MD telling patients with asthma, allergies or chemical sensitivity to leave town before aerial mosquito spraying. If not, stay inside. - Jason Whitely, WFAA

6:59p Planes will likely go wheels up at 9:30 p.m. Being warned low clouds will make it even darker at airport, meaning tough to see. - Teresa Woodard, WFAA

6:57p In an effort to keep the public as completely informed as possible, the City of Farmers Branch has set up a special message on West Nile Virus and aerial spraying on local AM radio at 1670 and by recorded message at 972.919.9868.

Following other Dallas County cities in the area, on Wednesday, Farmers Branch approved aerial spraying of insecticides for mosquitoes as a countermeasure to the spread of West Nile virus this summer.

Dallas County will be responsible for costs and operation of the aerial procedure that is scheduled to spray above Farmers Branch late this week depending on weather conditions. As of Thursday afternoon, Farmers Branch had not yet been scheduled for aerial spraying. - Farmers Branch Press Release

6:48p Just spoke to Dallas Mayor Mile Rawlings. He is relieved aerial spraying will happen, hoping weather holds out.

He just received word a dear friend has West Nile virus. - Teresa Woodard, WFAA

6:37p If your area gets aerial mosquito spraying tonight, doc says wash off patios, kids toys, pet bowls & cars. Leave shoes outside for a day or two if you've been walking on sprayed ground. - Jason Whitely, WFAA

6:35p The City of Richardson made their request to the State and we have been informed that the entire City of Richardson, including the portion which is in Collin County will be included in tonight’s map grid. Also included in tonight’s spray schedule are the entire cities of Garland, University Park and Highland Park, a portion of Dallas and the portion of Mesquite which is north of I-30.

Today, Dallas County Judge Clay Jenkins met with mayors and officials from the county’s Southern cities as well, to put the full spectrum of options at their disposal. The Southern cities were given an equal opportunity to choose between Aerial and Ground Spray for their cities. - Dallas County Press Release

6:26p "Don't panic, but be aware," is what an internal medicine doctor is telling his patients about aerial mosquito spraying tonight. - Jason Whitely, WFAA

5:12p Harris County (Houston) has used aerial mosquito spraying annually for 10 years. After Hurricane Ike in 2008, the county sprayed one million acres. - Jason Whitely, WFAA

5:10p Due to the spread of West Nile Virus and high infection rates, Grand Prairie will participate with Dallas County in an aerial assault against the mosquitoes that carry the disease. The aerial spray will cover all of Grand Prairie, including Tarrant County. The area north of I-30 may be sprayed as early as Friday night, Aug. 17, depending upon weather and coordination with other Dallas County cities. The rest of Grand Prairie will be announced as soon as dates and times are specified by Dallas County. Follow-up sprays may occur the following week at dates and times to be determined. Ground sprays in areas of positive test will continue as needed by the city. - Grand Prairie Press Release

5:00p Doctors warn people with asthma, ragweed allergy, or sensitive to chemicals to stay inside when West Nile aerial spraying begins in five hours. - Jason Whitely, WFAA

4:39p An observation: When I was reporting this story for the 10 p.m. news Wednesday, Dallas County planned to spray 49,000 acres. By Thursday afternoon, that doubled to 106,000 acres.  People who thought they were not going to be sprayed Thursday night should take note of the change. Instead of 635 being the north boundary – George Bush Turnpike now is. And Richardson, Mesquite and Garland will be sprayed Thursday night too. Just want to make sure anyone who watched News 8 at 10 Wednesday is up to date. - Teresa Woodard, WFAA

4:20p The City of Mesquite has been notified by Dallas County the area of Mesquite located north of Highway 30 will receive aerial spraying for mosquitoes around 10 p.m. tonight, weather permitting. - City of Mesquite

4:05p Weather permitting, aerial spraying is expected to begin tonight in a northeast section of Dallas County to control mosquitoes and help prevent the spread of West Nile virus.

Responding to requests from Dallas-area cities, the Texas Department of State Health Services is directing two planes to begin flying at approximately 10 p.m. The planes will cover about 106,000 acres and will complete the day's spraying by 3 a.m. Spraying may be delayed or halted due to rain or windy conditions.

The planes will spray a triangular area bound by the Dallas North Tollway, the George Bush Turnpike and Interstate 30. The area includes Richardson, Garland and parts of Dallas and Mesquite. This priority area was established based on disease prevalence and city input and will follow a defined grid pattern for flight efficiency.

Five planes are scheduled to fly Friday night and possibly over the weekend to cover the remaining requested areas. A second round of spraying may occur early next week depending on post-spray mosquito counts. - Texas Department of State Health Services

3:56p Richardson says aerial spraying will include all areas within the city limit. The spraying begins at 10 p.m. and goes through 1 a.m. Friday. - WFAA.com

3:13p The City of Lancaster has announced an emergency Lancaster City Council meeting at 5 p.m. to discuss the local state of disaster and "imminent threat to public health and safety due to a severe outbreak of West Nile Virus." The meeting is open to the public. - WFAA.com

2:46p SPCA urges pet owners to take extra precaution during aerial spraying. While larger mammals such as horses and livestock are said to face little risk with the spraying, the SPCA recommended that pet owners bring their dogs and cats indoors, "keep all windows and doors tightly closed." - WFAA.com

2:11p The City of DeSoto reported they have opted out of aerial spraying and will continue with surface spraying. In a statement released by the city, officials said they came to the decision based on "the city's relatively high terrain, good drainage and significant tree coverage. - WFAA.com

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