Alert archive / Oklahoma / Special Weather Statements in 2012
Special Weather Statement, NWS Tulsa, OK
NWS Tulsa, OK issued this special weather statement at Apr 7, 2012, 8:52 AM CDT for Osage County, Oklahoma. It was in force for 38 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
- Apr 7, 2012, 8:52 AM CDT (13:52 UTC)
- Expired
- Apr 7, 2012, 9:30 AM CDT
- In force
- 38 min
- Issued by
- NWS Tulsa, OK
County Osage County, OK
The radar
The Tulsa radar (KINX), 84 km from the middle of the area, began a volume at 13:52 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
Norman, OK (KOUN), launched 12:00Z, 1.9 hours before the alert went out and 183 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 905 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 375 m²/s²
- 0-3 km storm-relative helicity
- 466 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
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 Apr 7, 6:22 AM CDT, 2 hours 30 minutes earlier.
Area forecast discussion, Apr 7, 6:22 AM CDT, 2 hours 30 minutes before
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</html>Hazardous weather outlook, Apr 7, 5:07 AM CDT, 3 hours 45 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 507 AM CDT SAT APR 7 2012 ARZ001-002-010-011-019-020-029-OKZ049-053>076-081000- 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- 507 AM CDT SAT APR 7 2012 THIS OUTLOOK IS FOR NORTHWEST AND WEST CENTRAL ARKANSAS AS WELL AS MUCH OF EASTERN OKLAHOMA. .DAY ONE...TODAY AND TONIGHT. SEVERE THUNDERSTORM. RISK...LIMITED. AREA...EASTERN OKLAHOMA. ONSET...PRIMARILY AFTERNOON AND EVENING. DISCUSSION... SCATTERED THUNDERSTORMS WILL SPREAD EASTWARD ACROSS NORTHEAST OKLAHOMA DURING THE MORNING HOURS...WITH A GRADUAL INCREASE IN COVERAGE AS A COLD FRONT MOVES INTO THE REGION. ANY OF THE STRONGEST STORMS DURING THE MORNING HOURS COULD POSE A RISK OF MARGINALLY SEVERE HAIL AND GUSTY WINDS. THE EARLY THUNDERSTORM ACTIVITY IS LIKELY TO SHIFT EASTWARD ACROSS WESTERN ARKANSAS TOWARD AFTERNOON THOUGH INSTABILITY WILL DECREASE WITH EASTERN EXTENT WHICH WILL LIMIT THE SEVERE WEATHER POTENTIAL. THE COLD FRONT WILL CONTINUE SOUTHWARD DURING THE AFTERNOON WITH THUNDERSTORMS REDEVELOPING ALONG THE BOUNDARY. THESE STORMS HAVE A SLIGHTLY HIGHER CHANCE OF BECOMING SEVERE GIVEN THE ANTICIPATED INSTABILITY LEVELS. LOCATIONS SOUTH OF INTERSTATE 40 ACROSS SOUTHEAST OKLAHOMA WILL BE NEARER THE REGION OF AFTERNOON STORM DEVELOPMENT. WINDS ALOFT ARE NOT FAVORABLE FOR WIDESPREAD ORGANIZED SEVERE WEATHER THUS THE RISK WILL REMAIN LIMITED. ANY THUNDERSTORMS WHICH DEVELOP THIS AFTERNOON ARE LIKELY TO CONTINUE ALONG THE COLD FRONT INTO THE EVENING...AND POSSIBLY OVERNIGHT HOURS. SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT... LOCAL SPOTTER ACTIVATION MAY BE NEEDED. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. SUNDAY THROUGH WEDNESDAY...THUNDERSTORM POTENTIAL. THURSDAY...THUNDERSTORM POTENTIAL...HIGH WIND POTENTIAL. FRIDAY...THUNDERSTORM POTENTIAL. EXTENDED DISCUSSION... THE FRONTAL BOUNDARY WILL STALL NEAR THE RED RIVER VALLEY SUNDAY...AND BEGIN TO LIFT NORTHWARD SUNDAY NIGHT INTO MONDAY. THIS BOUNDARY WILL PROVIDE A FOCUS FOR CONTINUED THUNDERSTORM CHANCES...WITH A SECOND COLD FRONT PUSHING SOUTHWARD MONDAY NIGHT INTO TUESDAY. EACH OF THESE BOUNDARIES WILL INTERACT WITH AMPLE INSTABILITY TO SUPPORT STRONG TO SEVERE THUNDERSTORMS...THOUGH WIDESPREAD SEVERE WEATHER IS NOT CURRENTLY ANTICIPATED. A STRONG STORM SYSTEM WILL MOVE INTO THE SOUTHERN PLAINS TOWARD LATE WEEK WHICH WILL AGAIN INTERACT WITH THE LINGERING FRONTAL BOUNDARIES. THIS PATTERN WOULD BE MORE SUPPORTIVE OF AN ORGANIZED SEVERE WEATHER EVENT. WWW.SRH.NOAA.GOV/TULSA CONTAINS ADDITIONAL INFORMATION.
In the hours before
Special weather statement, Apr 7, 7:37 AM CDT, 1 hour 15 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
737 AM CDT SAT APR 7 2012
OKZ054-059-071300-
OSAGE OK-PAWNEE OK-
737 AM CDT SAT APR 7 2012
...SIGNIFICANT WEATHER ADVISORY...
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 800 AM CDT
FOR THE FOLLOWING COUNTIES...
IN NORTHEAST OKLAHOMA
CENTRAL OSAGE AND PAWNEE
AT 737 AM CDT...A STRONG THUNDERSTORM WAS LOCATED 5 MILES WEST OF
RALSTON...MOVING NORTHEAST AT 25 MPH.
SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...RALSTON
AND FAIRFAX.
THIS STORM WILL BE CAPABLE OF PRODUCING NICKEL SIZE HAIL AND WIND
GUSTS TO 40 MPH.
LAT...LON 3670 9652 3653 9643 3644 9685 3651 9689
TIME...MOT...LOC 1237Z 247DEG 21KT 3650 9681Special weather statement, Apr 7, 8:37 AM CDT, 15 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
837 AM CDT SAT APR 7 2012
OKZ054-071400-
OSAGE OK-
837 AM CDT SAT APR 7 2012
...SIGNIFICANT WEATHER ADVISORY...
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 900 AM CDT
FOR THE FOLLOWING COUNTY...
IN NORTHEAST OKLAHOMA
CENTRAL OSAGE
AT 836 AM CDT...A STRONG THUNDERSTORM WAS LOCATED 10 MILES SOUTHEAST
OF FAIRFAX...MOVING EAST AT 25 MPH.
THIS STORM WILL REMAIN OVER RURAL AREAS OF OSAGE COUNTY BETWEEN
FAIRFAX AND WYNONA.
THIS STORM WILL BE CAPABLE OF PRODUCING PENNY SIZE HAIL AND WIND
GUSTS TO 40 MPH.
LAT...LON 3665 9641 3647 9633 3646 9662 3651 9665
TIME...MOT...LOC 1336Z 253DEG 23KT 3651 9656Special weather statement, Apr 7, 8:52 AM CDT, 0 minutes before
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</html>The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 7, 7:37 AM CDT | Special Weather Statement | TSA | Osage | 23 min |
| Apr 7, 8:37 AM CDT | Special Weather Statement | TSA | Osage | 23 min |
| Apr 7, 9:40 AM CDT | Special Weather Statement | TSA | Osage | 35 min |
| Apr 7, 9:54 AM CDT | Severe Thunderstorm Warning | TSA | Osage, Washington | 66 min |
| Apr 7, 10:37 AM CDT | Special Weather Statement | TSA | Washington | 38 min |
| Apr 7, 10:45 AM CDT | Areal Flood Advisory | TSA | Nowata, Osage, Washington | 2 hr |
| Apr 7, 11:04 AM CDT | Special Weather Statement | TSA | Mayes, Rogers | 41 min |
| Apr 7, 5:13 PM CDT | Special Weather Statement | TSA | Wagoner | 47 min |
Nearby
Special Weather Statements in Oklahoma, 2012Every special weather statement in 2012
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.