Alert archive / Oklahoma / Special Weather Statements in 2011
Special Weather Statement, NWS Tulsa, OK
NWS Tulsa, OK issued this special weather statement at Aug 12, 2011, 8:53 PM CDT for Osage County, Pawnee County, Oklahoma. It was in force for 67 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 12, 2011, 8:53 PM CDT (01:53 UTC)
- Expired
- Aug 12, 2011, 10:00 PM CDT
- In force
- 67 min
- Issued by
- NWS Tulsa, OK
Counties Osage County, OK, Pawnee County, OK
The radar
The Vance AFB radar (KVNX), 113 km from the middle of the area, began a volume at 01:56 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.
The nearest sounding before it
Lamont, OK (KLMN), launched 00:00Z, 1.9 hours before the alert went out and 54 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
- 2979 J/kg
- Mixed-layer CIN
- -103 J/kg
- Mixed-layer LCL
- 1349 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 177 m²/s²
- 0-3 km storm-relative helicity
- 350 m²/s²
- Significant tornado parameter
- 2.0
- Supercell composite
- 7.5
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Tulsa, OK wrote its last area forecast discussion before this special weather statement went out at Aug 12, 8:49 PM CDT, 4 minutes earlier.
Area forecast discussion, Aug 12, 8:49 PM CDT, 4 minutes before
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</html>Hazardous weather outlook, Aug 12, 4:59 PM CDT, 3 hours 54 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 459 PM CDT FRI AUG 12 2011 ARZ001-002-010-011-019-020-029-OKZ049-053>076-131000- ADAIR OK-BENTON AR-CARROLL AR-CHEROKEE OK-CHOCTAW OK-CRAIG OK- CRAWFORD AR-CREEK OK-DELAWARE OK-FRANKLIN AR-HASKELL OK-LATIMER OK- LE FLORE OK-MADISON AR-MAYES OK-MCINTOSH OK-MUSKOGEE OK-NOWATA OK- OKFUSKEE OK-OKMULGEE OK-OSAGE OK-OTTAWA OK-PAWNEE OK-PITTSBURG OK- PUSHMATAHA OK-ROGERS OK-SEBASTIAN AR-SEQUOYAH OK-TULSA OK-WAGONER OK- WASHINGTON OK-WASHINGTON AR- 459 PM CDT FRI AUG 12 2011 ...STRONG TO SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING... THIS OUTLOOK IS FOR NORTHWEST AND WEST CENTRAL ARKANSAS AS WELL AS MUCH OF EASTERN OKLAHOMA. .DAY ONE...THIS AFTERNOON AND TONIGHT. TORNADO. RISK...LIMITED. AREA...NORTHEAST OKLAHOMA AND FAR NORTHWEST ARKANSAS. ONSET...ONGOING. SEVERE THUNDERSTORM. RISK...ELEVATED. AREA...NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS. ONSET...ONGOING. FLASH FLOOD. RISK...ELEVATED. AREA...NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS. ONSET...ONGOING. HEAVY RAIN. RISK...ELEVATED. AREA...NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS. ONSET...ONGOING. DANGEROUS HEAT. RISK...ELEVATED. AREA...SOUTHEAST OKLAHOMA. ONSET...ONGOING. SIGNIFICANT WINDS. RISK...LIMITED. AREA...NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS. ONSET...ONGOING. FIRE WEATHER DANGER. RISK...LIMITED. AREA...EASTERN OKLAHOMA AND NORTHWEST ARKANSAS. ONSET...ONGOING. DISCUSSION... SHOWERS WITH STRONG TO POSSIBLY SEVERE THUNDERSTORMS CONTINUE TO PUSH ACROSS PORTIONS OF EASTERN OKLAHOMA AND NORTHWEST ARKANSAS THIS AFTERNOON. SOME OF THE STRONGER THUNDERSTORMS HAVE PRODUCED LOCALLY HEAVY RAINFALL WITH A POTENTIAL FLASH FLOOD THREAT AND ALSO GUSTY WINDS UP AROUND 50 MPH. LOCALLY HEAVY RAINFALL ALONG WITH A SEVERE WEATHER THREAT WILL REMAIN WITH THIS ACTIVITY AS ALL MODES OF SEVERE WEATHER COULD BE POSSIBLE. THESE CONDITIONS WILL REMAIN FAVORABLE THROUGH THE EVENING AND INTO THE OVERNIGHT HOURS AS ANOTHER THUNDERSTORM COMPLEX DEVELOPS TO THE NORTHWEST AND PUSHES TOWARD THE REGION. ACROSS SOUTHEAST OKLAHOMA...SOUTH OF THE SHOWERS AND THUNDERSTORMS...TEMPERATURES HAVE BEEN ABLE TO CLIMB UP TO AROUND 100 DEGREES WITH HEAT INDICES AROUND 106 DEGREES. THESE HOT CONDITIONS HAVE ALLOWED FOR A LIMITED FIRE WEATHER DANGER TO DEVELOP...MAINLY ALONG AND SOUTH OF A BURBANK TO FORT SMITH LINE. THE HOT TEMPERATURES AND FIRE DANGERS SHOULD DECREASE THIS EVENING AS RELATIVE HUMIDITY VALUES INCREASE AND CHANCES FOR SHOWERS AND THUNDERSTORMS SPREAD OVER REGION. SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT... ACTIVATION OF THE REGIONAL SPOTTER NETWORK LIKELY. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. SATURDAY...THUNDERSTORM POTENTIAL...DANGEROUS HEAT POTENTIAL. SUNDAY...NO HAZARDS. MONDAY...VERY HIGH FIRE WEATHER POTENTIAL. TUESDAY...VERY HIGH FIRE WEATHER POTENTIAL...DANGEROUS HEAT POTENTIAL. WEDNESDAY AND THURSDAY...DANGEROUS HEAT POTENTIAL. EXTENDED DISCUSSION... THUNDERSTORMS WILL REMAIN POSSIBLE INTO SATURDAY AS A COLD FRONT PUSHES INTO THE REGION FROM THE NORTH. AHEAD OF THE FRONTAL BOUNDARY...DANGEROUS HEAT POTENTIAL WILL BE POSSIBLE AGAIN SATURDAY ACROSS FAR SOUTHEAST OKLAHOMA. DANGEROUS HEAT CONDITIONS WITH ELEVATED FIRE WEATHER DANGERS ARE EXPECTED TO RETURN TO THE REGION NEXT WEEK AS THE FRONTAL BOUNDARY RETREATS NORTHWARD AND A RIDGE OF HIGH PRESSURE ALOFT DEVELOPS OVER THE REGION. WWW.SRH.NOAA.GOV/TULSA CONTAINS ADDITIONAL INFORMATION.
In the hours before
Local storm report, Aug 12, 6:59 PM CDT, 1 hour 54 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE
659 PM CDT FRI AUG 12 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0630 PM HAIL MUSKOGEE 35.75N 95.37W
08/12/2011 E1.00 INCH MUSKOGEE OK BROADCAST MEDIA
EAST SIDE...
&&
SAALocal storm report, Aug 12, 7:07 PM CDT, 1 hour 46 minutes before
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</html>Local storm report, Aug 12, 7:26 PM CDT, 1 hour 27 minutes before
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</html>Special weather statement, Aug 12, 8:53 PM CDT, 0 minutes before
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Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 12, 7:32 PM CDT | Special Weather Statement | TSA | Haskell, LeFlore | 43 min |
| Aug 12, 7:41 PM CDT | Special Weather Statement | TSA | Haskell | 34 min |
| Aug 12, 9:32 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Pawnee | 58 min |
| Aug 12, 9:51 PM CDT | Special Weather Statement | TSA | Craig, Delaware, Nowata, Washington | 54 min |
| Aug 12, 10:47 PM CDT | Special Weather Statement | TSA | Adair, Cherokee, Craig, Delaware, Mayes, Nowata and 5 more | 43 min |
| Aug 12, 11:32 PM CDT | Flash Flood Warning | TSA | Mayes, Rogers | 4 hr |
| Aug 12, 11:32 PM CDT | Special Weather Statement | TSA | Adair, Cherokee, Delaware, Mayes, Rogers, Wagoner | 43 min |
| Aug 13, 12:18 AM CDT | Special Weather Statement | TSA | Adair, Sequoyah | 42 min |
| Aug 12, 7:04 PM CDT | Severe Thunderstorm Warning | TSA | Sebastian | 26 min |
Nearby
Special Weather Statements in Oklahoma, 2011Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.