Alert archive / Oklahoma / Special Weather Statements in 2012
Special Weather Statement, NWS Tulsa, OK
NWS Tulsa, OK issued this special weather statement at Apr 29, 2012, 2:35 AM CDT for Pawnee County, Oklahoma. It was in force for 40 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 29, 2012, 2:35 AM CDT (07:35 UTC)
- Expired
- Apr 29, 2012, 3:15 AM CDT
- In force
- 40 min
- Issued by
- NWS Tulsa, OK
County Pawnee County, OK
The radar
The Tulsa radar (KINX), 92 km from the middle of the area, began a volume at 07:34 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, 7.6 hours before the alert went out and 90 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
- 167 J/kg
- Mixed-layer CIN
- -203 J/kg
- Mixed-layer LCL
- 868 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 58 m²/s²
- 0-3 km storm-relative helicity
- 228 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.2
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 29, 12:06 AM CDT, 2 hours 29 minutes earlier.
Area forecast discussion, Apr 29, 12:06 AM CDT, 2 hours 29 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 1206 AM CDT SUN APR 29 2012 .AVIATION... CONCERNING TAF SITES KTUL/KRVS/KBVO/KMLC/KXNA/KFYV/KFSM. SCATTERED CONVECTION HAS DEVELOPED OVER WESTERN AND CENTRAL OKLAHOMA TONIGHT ALONG AND NORTH OF A FRONTAL BOUNDARY POSITIONED OVER THE REGION. THIS CONVECTION WILL HAVE THE GREATEST CHANCES OF AFFECTING NORTHEAST OKLAHOMA TAF SITES. FRONTAL BOUNDARY IS EXPECTED TO RETREAT NORTHWARD LATE OVERNIGHT AND SUNDAY...WHICH WILL SHIFT WINDS OUT OF THE SOUTH AT ALL SITES. VFR CONDITIONS WILL CONTINUE FOR NORTHEAST OKLAHOMA...WITH MVFR CONDITIONS WITHIN ANY CONVECTIVE DEVELOP AND THEN RETURNING BACK TO VFR CONDITIONS SUNDAY AFTERNOON/EVENING. FOR SOUTHEAST OKLAHOMA AND NORTHWEST ARKANSAS...WILL LEAVE VFR CONDITIONS IN THE TAF...THOUGH SOME EARLY MORNING MVFR CEILINGS COULD BE POSSIBLE. && .PREV DISCUSSION... /ISSUED 727 PM CDT SAT APR 28 2012/ DISCUSSION... LONG RANGE RADAR ECHOES FROM KINX ARE SHOWING HINTS THAT CONVECTION IS TRYING TO DEVELOP TO THE SW OF OKC. MODEL SOUNDINGS SHOW THE CAP WEAKENING AROUND AND AFTER 00Z...AND THIS WILL ALLOW FOR MORE STORM DEVELOPMENT ALONG AND NORTH OF THE FRONT. THE LLJ IS FORECAST TO STRENGTHEN TO THE SOUTH OF THE FRONT DURING THE OVERNIGHT...ESPECIALLY OVER SW AND CNTRL OK. AS A RESULT...A GRADUAL EXPANSION IN CONVECTIVE COVERAGE IS EXPECTED ACROSS N CNTRL OK LATER THIS EVENING...WITH THIS ACTIVITY SPREADING GENERALLY E/NE INTO NORTHEAST OK AROUND OR AFTER MIDNIGHT PER THE MOST RECENT RUNS OF THE HRRR. THE ECMWF AND GFS ENSEMBLE DATA ALSO SUPPORT THIS AS WELL. I HAVE RAISED POPS BASICALLY FROM THE I-44 CORRIDOR NORTHWARD INTO THE LIKELY CATEGORY. THE HRRR DOES ALSO HINT THAT ONE OR TWO STORMS COULD REMAIN DISCRETE ON THE SOUTHERN FRINGE OF THE CONVECTIVE CLUSTER...AND ANY POTENTIAL RIGHT MOVING SUPERCELL WOULD MOVE MORE EAST THAN NORTH...AND COULD POTENTIALLY AFFECT THE TULSA METRO AND SURROUNDING AREAS LATER. ANY RIGHT MOVING SUPERCELL WOULD HAVE AT LEAST LIMITED TORNADO POTENTIAL GIVEN THE STRENGTHENING 0-1KM SHEAR AND LOW LCLS TONIGHT. UPDATED TEXT PRODUCTS OUT SHORTLY. LACY && .PRELIMINARY POINT TEMPS/POPS... TUL 65 78 65 80 / 60 50 70 50 FSM 65 84 64 81 / 20 20 30 50 MLC 64 79 66 80 / 20 20 30 30 BVO 61 77 63 79 / 70 60 70 50 FYV 60 80 61 77 / 40 20 40 60 BYV 62 80 61 77 / 30 30 40 60 MKO 63 80 64 79 / 40 30 50 40 MIO 64 79 64 80 / 60 50 70 50 F10 64 78 66 79 / 40 30 50 30 HHW 63 81 65 81 / 10 10 20 20 && .TSA WATCHES/WARNINGS/ADVISORIES... OK...NONE. AR...NONE. && AVIATION...20
Hazardous weather outlook, Apr 28, 7:53 PM CDT, 6 hours 42 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 753 PM CDT SAT APR 28 2012 ARZ001-002-010-011-019-020-029-OKZ049-053>076-291000- 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- 753 PM CDT SAT APR 28 2012 ...CHANCE OF SEVERE STORMS...INCLUDING THE POTENTIAL FOR AN ISOLATED TORNADO...FOR TONIGHT... THIS OUTLOOK IS FOR NORTHWEST AND WEST CENTRAL ARKANSAS AS WELL AS MUCH OF EASTERN OKLAHOMA. .DAY ONE...TONIGHT. TORNADO. RISK...LIMITED. AREA...ALONG AND WEST OF A TULSA TO MCALESTER LINE. ONSET...LATE EVENING. SEVERE THUNDERSTORM. RISK...ELEVATED. AREA...NORTHEAST OKLAHOMA. ONSET...LATE EVENING. FLASH FLOOD. RISK...LIMITED. AREA...NORTH OF INTERSTATE 44. ONSET...AFTER MIDNIGHT. HEAVY RAIN. RISK...LIMITED. AREA...NORTH OF INTERSTATE 44. ONSET...AFTER MIDNIGHT. DISCUSSION... THUNDERSTORMS ARE EXPECTED TO DEVELOP FROM SOUTHWEST INTO NORTH CENTRAL OKLAHOMA THIS EVENING...AND ARE FORECAST TO EVENTUALLY ORGANIZE INTO ONE OR MORE CLUSTERS TONIGHT AS THEY SPREAD GENERALLY ALONG AND NORTH OF A STALLED FRONTAL BOUNDARY INTO NORTHEAST OKLAHOMA. VERY LARGE HAIL TO AROUND 2 INCHES IN DIAMETER AND DAMAGING WINDS WILL BE THE PRIMARY HAZARDS. IF CELLS CAN REMAIN MORE DISCRETE ON THE SOUTHERN FRINGE...THEN THERE WOULD BE POTENTIAL FOR THESE STORMS TO TRACK EAST INTO NORTHEAST OR EAST CENTRAL OKLAHOMA LATER ON TONIGHT. A LIMITED TORNADO AND VERY LARGE HAIL THREAT WILL ACCOMPANY ANY SUPERCELL IF IT MANAGES TO TRACK INTO NORTHEAST OR EAST CENTRAL OKLAHOMA. LOCALLY HEAVY RAINFALL...WITH AMOUNTS AROUND AN INCH...WILL BE POSSIBLE MAINLY TO THE NORTH AND WEST OF TULSA. SINCE THE WINDS ALOFT WILL KEEP STORMS MOVING...AND THERE HAS NOT BEEN MUCH OF ANY ANTECEDENT RAIN IN THIS AREA AS OF LATE...THE FLASH FLOODING RISK WILL BE LIMITED. SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT... LOCAL SPOTTER ACTIVATION MAY BE NEEDED. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. SUNDAY...THUNDERSTORM POTENTIAL...HEAVY RAIN POTENTIAL. MONDAY AND TUESDAY...THUNDERSTORM POTENTIAL. WEDNESDAY...HIGH WIND POTENTIAL. THURSDAY AND FRIDAY...NO HAZARDS. EXTENDED DISCUSSION... SEVERAL ROUNDS OF THUNDERSTORMS CAN BE EXPECTED MAINLY ALONG AND NORTH OF THE STALLED FRONTAL ZONE ACROSS NORTHEAST OKLAHOMA THROUGH EARLY NEXT WEEK. WHEN ALL IS SAID AND DONE...RAINFALL AMOUNTS COULD EXCEED 3 INCHES TO THE NORTH AND WEST OF TULSA THROUGH TUESDAY. STORMS WILL GENERALLY BE TRAINING OVER THE SAME AREAS OVER THE NEXT FEW DAYS...WHICH COULD LEAD TO FLOODING. THE SEVERE WEATHER RISK WILL REMAIN LIMITED WITH LARGE HAIL AND DAMAGING WINDS THE PRIMARY HAZARDS. WWW.SRH.NOAA.GOV/TULSA CONTAINS ADDITIONAL INFORMATION.
In the hours before
Special weather statement, Apr 29, 12:13 AM CDT, 2 hours 22 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1213 AM CDT SUN APR 29 2012
OKZ064-290600-
CREEK OK-
1213 AM CDT SUN APR 29 2012
...SIGNIFICANT WEATHER ADVISORY...
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 100 AM CDT
FOR THE FOLLOWING COUNTY...
IN NORTHEAST OKLAHOMA
CREEK
AT 1213 AM CDT...A STRONG THUNDERSTORM WAS LOCATED 17 MILES WEST OF
MILFAY...MOVING NORTHEAST AT 40 MPH. SOME LOCATIONS THAT WILL BE
AFFECTED BY THIS STORM INCLUDE...BRISTOW...MILFAY...SLICK...DEPEW...
SHAMROCK...DRUMRIGHT...OILTON...SILVER CITY AND MANNFORD.
THIS STORM WILL BE CAPABLE OF PRODUCING NICKEL SIZE HAIL AND WIND
GUSTS TO 50 MPH. RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT IN CASE
THE SIGNIFICANT WEATHER ADVISORY IS UPGRADED TO A WARNING.
LAT...LON 3616 9663 3616 9631 3569 9621 3566 9662
TIME...MOT...LOC 0513Z 243DEG 33KT 3578 9682Special weather statement, Apr 29, 1:47 AM CDT, 48 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
147 AM CDT SUN APR 29 2012
OKZ054-059-290730-
OSAGE OK-PAWNEE OK-
147 AM CDT SUN APR 29 2012
...SIGNIFICANT WEATHER ADVISORY...
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 230 AM CDT
FOR THE FOLLOWING COUNTIES...
IN NORTHEAST OKLAHOMA
WESTERN OSAGE AND PAWNEE
AT 147 AM CDT...A STRONG THUNDERSTORM WAS LOCATED 9 MILES WEST OF
RALSTON...MOVING NORTHEAST AT 25 MPH. SOME LOCATIONS THAT WILL BE
AFFECTED BY THIS STORM INCLUDE...FAIRFAX AND RALSTON.
THIS STORM WILL BE CAPABLE OF PRODUCING PENNY SIZE HAIL AND WIND
GUSTS TO 40 MPH. RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT IN CASE
THE SIGNIFICANT WEATHER ADVISORY IS UPGRADED TO A WARNING.
LAT...LON 3655 9694 3656 9690 3660 9692 3669 9671
3654 9657 3644 9688 3654 9696
TIME...MOT...LOC 0647Z 237DEG 22KT 3650 9687Special weather statement, Apr 29, 2:16 AM CDT, 19 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
216 AM CDT SUN APR 29 2012
OKZ059-290745-
PAWNEE OK-
216 AM CDT SUN APR 29 2012
...SIGNIFICANT WEATHER ADVISORY...
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 245 AM CDT
FOR THE FOLLOWING COUNTY...
IN NORTHEAST OKLAHOMA
PAWNEE
AT 216 AM CDT...A STRONG THUNDERSTORM WAS LOCATED 2 MILES SOUTHWEST
OF TERLTON...MOVING NORTHEAST AT 30 MPH. SOME LOCATIONS THAT WILL BE
AFFECTED BY THIS STORM INCLUDE...JENNINGS...TERLTON...HALLETT AND
CLEVELAND.
THIS STORM WILL BE CAPABLE OF PRODUCING PENNY SIZE HAIL AND WIND
GUSTS TO 40 MPH. RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT IN CASE
THE SIGNIFICANT WEATHER ADVISORY IS UPGRADED TO A WARNING.
LAT...LON 3634 9648 3631 9644 3628 9643 3627 9639
3623 9634 3616 9648 3616 9656 3619 9661
TIME...MOT...LOC 0716Z 222DEG 24KT 3619 9650Special weather statement, Apr 29, 2:35 AM CDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
235 AM CDT SUN APR 29 2012
OKZ054-059-064-290815-
CREEK OK-OSAGE OK-PAWNEE OK-
235 AM CDT SUN APR 29 2012
...SIGNIFICANT WEATHER ADVISORY...
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 315 AM CDT
FOR THE FOLLOWING COUNTIES...
IN NORTHEAST OKLAHOMA
NORTHWESTERN CREEK...SOUTHEASTERN OSAGE AND PAWNEE
AT 234 AM CDT...A STRONG THUNDERSTORM WAS LOCATED 2 MILES WEST OF
JENNINGS...MOVING NORTHEAST AT 40 MPH. SOME LOCATIONS THAT WILL BE
AFFECTED BY THIS STORM INCLUDE...OSAGE...HOMINY...WYNONA...
JENNINGS...TERLTON...HALLETT...MARAMEC...BLACKBURN...CLEVELAND...
WESTPORT...OILTON...SILVER CITY...QUAY AND WALNUT CREEK STATE PARK.
THIS STORM WILL BE CAPABLE OF PRODUCING NICKEL SIZE HAIL. THIS STORM
WILL BE CAPABLE OF PRODUCING WIND GUSTS TO 40 MPH. RESIDENTS IN THESE
AREAS SHOULD REMAIN ALERT IN CASE THE SIGNIFICANT WEATHER ADVISORY IS
UPGRADED TO A WARNING.
LAT...LON 3659 9633 3632 9601 3603 9662 3604 9663
3615 9663 3615 9682 3616 9683 3624 9682
3624 9688
TIME...MOT...LOC 0734Z 228DEG 34KT 3620 9657The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 29, 12:13 AM CDT | Special Weather Statement | TSA | Creek | 47 min |
| Apr 29, 1:00 AM CDT | Severe Thunderstorm Warning | TSA | Osage, Pawnee | 45 min |
| Apr 29, 1:43 AM CDT | Severe Thunderstorm Warning | TSA | Creek, Pawnee | 30 min |
| Apr 29, 1:47 AM CDT | Special Weather Statement | TSA | Pawnee | 43 min |
| Apr 29, 2:16 AM CDT | Special Weather Statement | TSA | Pawnee | 29 min |
| Apr 29, 2:43 AM CDT | Severe Thunderstorm Warning | TSA | Creek, Osage, Pawnee | 32 min |
| Apr 29, 3:12 AM CDT | Special Weather Statement | TSA | Washington | 33 min |
| Apr 29, 4:17 AM CDT | Special Weather Statement | TSA | Osage, Washington | 43 min |
| Apr 29, 4:29 AM CDT | Severe Thunderstorm Warning | TSA | Osage, Tulsa, Washington | 46 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.