Alert archive / Oklahoma / Red Flag Warnings in 2011
Red Flag Warning 6, NWS Tulsa, OK
NWS Tulsa, OK issued this red flag warning at Aug 8, 2011, 3:36 AM CDT for 10 counties in Oklahoma. It took effect at Aug 8, 2011, 10:00 AM CDT. It was in force for 12 hr. 4 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Aug 8, 2011, 3:36 AM CDT (08:36 UTC)
- In effect from
- Aug 8, 2011, 10:00 AM CDT
- Expired
- Aug 8, 2011, 10:00 PM CDT
- In force
- 12 hr
- Issued by
- NWS Tulsa, OK
Counties Creek County, OK, Mayes County, OK, Nowata County, OK, Okfuskee County, OK, Okmulgee County, OK, Pawnee County, OK, Rogers County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK
The radar
The Tulsa radar (KINX), 32 km from the middle of the area, began a volume at 08:38 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 8, 8:30 PM CDT | TSTM WND GST 58 | 3 S Sapulpa, OK | MEASURED AT THE LONE STAR SCHOOL SCHOOLNET. |
| Aug 8, 8:32 PM CDT | TSTM WND DMG | 4 W Hectorville, OK | 8 TO 10 POWER POLES SNAPPED ALONG 221ST ST. WOMEN TRAPPED IN VEHICLE BY POWER LINES. |
| Aug 8, 8:40 PM CDT | TSTM WND GST 66 | 4 W Hectorville, OK | |
| Aug 8, 8:45 PM CDT | TSTM WND DMG | 3 N Broken Arrow, OK | POWER LINES REPORTED AT THE BA EXPRESSWAY AND 145TH EAST AVE. POSSIBLY RESULTED IN A FIRE. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Lamont, OK (KLMN), launched 00:00Z, 8.6 hours before the alert went out and 149 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 386 J/kg
- Mixed-layer CIN
- -179 J/kg
- Mixed-layer LCL
- 3062 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 57 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
605 WWUS84 KTSA 080836 RFWTSA FIRE WEATHER PRODUCT NATIONAL WEATHER SERVICE TULSA OK 336 AM CDT MON AUG 8 2011 OKZ057-058-070-071-073-080945- /O.CAN.KTSA.FW.A.0005.110808T1500Z-110809T0300Z/ CRAIG-OTTAWA-MUSKOGEE-MCINTOSH-PITTSBURG- 336 AM CDT MON AUG 8 2011 ...FIRE WEATHER WATCH IS CANCELLED... THE NATIONAL WEATHER SERVICE IN TULSA HAS CANCELLED THE FIRE WEATHER WATCH... FOR THE FOLLOWING COUNTIES... * IN OKLAHOMA...MUSKOGEE...PITTSBURG...OTTAWA...MCINTOSH AND CRAIG. * THE RED FLAG WATCH THAT WAS IN EFFECT HAS BEEN CANCELLED. A FIRE DANGER STATEMENT HAS BEEN ISSUED FOR THESE COUNTIES FOR TODAY AS VERY HOT TEMPERATURES AND AFTERNOON HUMIDITIES IN THE 20 TO 30 PERCENT RANGE ARE EXPECTED. THESE CONDITIONS WILL SUPPORT AGGRESSIVE FIRE BEHAVIOR WITH ANY WILDFIRE. AN OUTFLOW BOUNDARY FROM OVERNIGHT THUNDERSTORMS IS LIKELY TO REMAIN ACROSS FAR NORTHEAST OKLAHOMA...AND WIND SPEEDS WILL REMAIN LESS THAN 20 MPH FOR MUCH OF EAST CENTRAL OKLAHOMA. SHOULD THE FORECAST CHANGE...PORTIONS OF THE AREA MAY BE UPGRADED TO A RED FLAG WARNING LATER TODAY. && $$ OKZ054>056-059>062-064>067-082200- /O.UPG.KTSA.FW.A.0005.110808T1500Z-110809T0300Z/ /O.NEW.KTSA.FW.W.0006.110808T1500Z-110809T0300Z/ OSAGE-WASHINGTON OK-NOWATA-PAWNEE-TULSA-ROGERS-MAYES-CREEK- OKFUSKEE-OKMULGEE-WAGONER- 336 AM CDT MON AUG 8 2011 ...RED FLAG WARNING IN EFFECT FROM 10 AM THIS MORNING TO 10 PM CDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 10 AM THIS MORNING TO 10 PM CDT THIS EVENING... FOR THE FOLLOWING COUNTIES... * IN OKLAHOMA...PAWNEE...WASHINGTON...OSAGE...NOWATA...CREEK... OKFUSKEE...OKMULGEE...WAGONER...TULSA...ROGERS AND MAYES. * THIS WARNING REPLACES THE RED FLAG WATCH THAT WAS IN EFFECT. HAZARDOUS WEATHER... * AN OUTFLOW BOUNDARY WILL BE ACROSS NORTHEAST OKLAHOMA THROUGH MID MORNING...HOWEVER THIS BOUNDARY IS EXPECTED TO LIFT NORTHWARD BY THE AFTERNOON. AS THE BOUNDARY LIFTS NORTHWARD... VERY HOT TEMPERATURES AND LOW HUMIDITIES WILL DEVELOP. ADDITIONALLY...BREEZY SOUTH TO SOUTHWEST WINDS ARE EXPECTED WHICH WILL ALLOW FOR DANGEROUSLY RAPID FIRE SPREAD WITH ANY WILDFIRE. * RELATIVE HUMIDITIES IN THE 15 TO 25 PERCENT RANGE. * SOUTH TO SOUTHWESTERLY WINDS OF 10 TO 20 MPH WITH GUSTS OF 25 MPH BY LATE MORNING THROUGH THE AFTERNOON. IMPACTS... * ANY FIRES WILL QUICKLY SPREAD OUT OF CONTROL AND ENDANGER LIVES AND PROPERTY. DEFINITION... * A RED FLAG WARNING MEANS THAT A DANGEROUS COMBINATION OF WEATHER CONDITIONS AND DRY VEGETATION IS EXPECTED WITHIN 24 HOURS...FAVORING RAPID GROWTH AND SPREAD OF ANY WILDFIRES. THE PRIMARY WEATHER FACTORS INCLUDE STRONGER WINDS...LOWER HUMIDITIES...AND WARMER TEMPERATURES. PRECAUTIONARY/PREPAREDNESS ACTIONS... * DISPOSE OF CIGARETTES PROPERLY AND AVOID ACTIVITIES THAT COULD START FIRES. * STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO OR TELEVISION FOR THE LATEST INFORMATION CONCERNING THIS WEATHER EVENT. ADDITIONAL WEATHER INFORMATION CAN ALSO BE FOUND AT: WEATHER.GOV/TULSA. && $$
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 8, 5:19 PM CDT | Special Weather Statement | TSA | Pawnee | 26 min |
| Aug 8, 5:43 PM CDT | Special Weather Statement | TSA | Osage | 47 min |
| Aug 8, 5:57 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Pawnee | 36 min |
| Aug 8, 6:13 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Pawnee | 62 min |
| Aug 8, 6:59 PM CDT | Special Weather Statement | TSA | Pawnee | 31 min |
Nearby
Red Flag Warnings in Oklahoma, 2011Every red flag warning in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.