Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 236, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at May 30, 2001, 4:02 PM CDT for Pushmataha County, Oklahoma. It was in force for 43 min. 1 report came from inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.
The facts
- Issued
- May 30, 2001, 4:02 PM CDT (21:02 UTC)
- Expired
- May 30, 2001, 4:45 PM CDT
- In force
- 43 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Pushmataha County, OK
The radar
The Western Arkansas radar (KSRX), 130 km from the middle of the area, began a volume at 21:03 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 |
|---|---|---|---|
| May 30, 4:10 PM CDT | Hail 0.75 | Cloudy, OK |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 30, 4:00 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Norman, OK (KOUN), launched 12:00Z, 9.0 hours before the alert went out and 230 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
- 566 J/kg
- Mixed-layer CIN
- -253 J/kg
- Mixed-layer LCL
- 871 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 238 m²/s²
- 0-3 km storm-relative helicity
- 315 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 9.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KTSA 302102 SVRTUL OKC127-302145- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 402 PM CDT WED MAY 30 2001 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN PUSHMATAHA COUNTY IN SOUTHEAST OKLAHOMA * UNTIL 445 PM CDT * AT 402 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 3 MILES SOUTH OF CLOUDY...MOVING EAST AT 20 MPH. * SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...CLOUDY. HAIL TO THE SIZE OF GOLFBALLS AND WIND GUSTS TO 65 MPH CAN BE EXPECTED IN THE WARNED AREA. A TORNADO WATCH IS ALSO IN EFFECT. TORNADOES CAN DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS. BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS. LAT...LON 3429 9535 3419 9528 3428 9480 3451 9490
What forecasters said that day
The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at May 30, 3:15 PM CDT, 47 minutes earlier.
Area forecast discussion, May 30, 3:15 PM CDT, 47 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 315 PM CDT WED MAY 30 2001 ALL IS QUIET ACROSS FA...FOR NOW. COMPLEX THAT BROUGHT RAIN TO MUCH OF THE AREA EARLIER WAS DIMINISHING AS IT PUSHES EAST INTO CENTRAL AR. OTHER ACTIVITY WAS OCCURRING ACROSS CENTRAL/ERN KS IN ASSOCIATION WITH THE UPPER LOW. AS FOR ADDITIONAL CONVECTION ACROSS OUR AREA... MAIN FOCUS FOR SRN ZONES WILL BE OUTFLOW BOUNDARY CURRENTLY SITUATED OVER SRN OK IN THE VICINITY OF THE RED RIVER. SURFACE LOW WAS LOCATED ACROSS NE KS...WITH ATTENDANT COLD FRONT EXTENDING INTO CENTRAL AND SOUTHWEST OK. THIS FRONT LOOKS TO OFFER A CHANCE OF ADDITIONAL STORMS ACROSS AREAS NORTH OF I-40...THOUGH INSTABILITIES HAVE BEEN HAMPERED SOMEWHAT DUE TO CLOUD COVER. LIS IN THE -10 TO -12 HAVE BEEN NOTED ACROSS NRN TX IN AREAS THAT HAVE BENEFITED FROM AFTERNOON SUN. STILL PLENTY OF INSTABILITY ACROSS SE OK TO KEEP MENTION OF SVR IN ZONES TONIGHT. AVN AND ETA ARE IN AGREEMENT WITH REGARDS TO S/W DROPPING SE FROM CO AND SWINGING ACROSS TX OVERNIGHT. HEAVIEST RAINS OVERNIGHT SHOULD BE CONFINED TO FAR SRN OK AND NRN TX WHERE UPPER SUPPORT WILL BE MAXIMIZED. DESPITE LOW FFG VALUES...WILL HOLD OFF ON ISSUING FFA FOR NOW ACROSS NE OK/FAR NW AR WITH HEAVY RAIN THREAT TO THE SOUTH. SFC FRONT AND S/W PUSH OFF TO THE EAST TOMORROW AS SFC HIGH PRESSURE QUICKLY SETTLES OVER THE AREA. NEXT CHANCE FOR STORMS APPEARS TO BE FRIDAY. WINDS SHIFT AROUND TO THE SW ON FRI OUT AHEAD OF A SFC FRONT THAT APPROACHES FORM THE NORTH LATE IN THE AFTERNOON FRIDAY. LAPSE RATES WILL BE STEEP BY FRIDAY AFTERNOON AS H5 VORT AND ASSOCIATED COLD AIR POCKET BRUSH THE AREA. WILL KEEP SAT AND SUN DRY...BUT WILL ADD SLIGHT CHANCE FOR STORMS ON MONDAY AS 12Z AVN HAS FOLLOWED 00Z MRF WITH AN APPROACHING COLD FRONT AND S/W. SFC HIGH SETTLES IN BEHIND FRONT...SO DRY WX IN STORE FOR TUES-WED. FCSTID = 23 .PRELIMINARY NUMBERS... TUL 60 78 58 83 / 40 10 0 0 FSM 62 82 59 86 / 50 20 0 0 MLC 62 80 58 85 / 50 20 0 0 BVO 59 78 55 83 / 40 10 0 0 FYV 60 75 50 81 / 50 10 0 0 BYV 60 75 50 80 / 50 10 0 0 MIO 60 75 53 81 / 40 10 0 0 MKO 61 78 59 83 / 40 10 0 0 F10 61 79 58 84 / 40 10 0 0 HHW 62 81 59 85 / 50 20 0 0 .TSA... AR...NONE. OK...NONE.
In the hours before
Local storm report, May 30, 10:08 AM CDT, 5 hours 54 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1008 AM CDT WED MAY 30 2001
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0637 AM WEBBERS FALLS OK 60 MPH TSTM GUST
05/30/01 MUSKOGEE CO-OP OBSERVER REPORT
0652 AM 2 N KINTA OK 60 MPH TSTM GUST
05/30/01 HASKELL EMERGENCY MGMT RE.PORTLocal storm report, May 30, 10:14 AM CDT, 5 hours 48 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1014 AM CDT WED MAY 30 2001
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0640 AM 9 NW SCIPIO OK 60 MPH TSTM GUST
05/30/01 PITTSBURG PUBLIC REPORTLocal storm report, May 30, 10:35 AM CDT, 5 hours 27 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1035 AM CDT WED MAY 30 2001
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0430 AM MUSKOGEE OK FLOOD
05/30/01 MUSKOGEE MANY LOW-LYING ROAD
FLOODED IN THE
CITY
SHERIFFS OFFICE REPORT
0430 AM 22 W EUFAULA OK 60 MPH TSTM GUST
05/30/01 MCINTOSH PUBLIC REPORT (TOLL GATE)
0430 AM HENRYETTA OK 60 MPH TSTM GUST
05/30/01 OKMULGEE PUBLIC REPORT
0430 AM HENRYETTA OK .75 INCH HAIL
05/30/01 OKMULGEE PUBLIC REPORTLocal storm report, May 30, 11:03 AM CDT, 4 hours 59 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1103 AM CDT WED MAY 30 2001
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0400 AM OKEMAH OK 1 INCH HAIL
05/30/01 OKFUSKEE EOC REPORT
0410 AM OKEMAH OK WIND DAMAGE
05/30/01 OKFUSKEE LARGE TREE LIMBS DOWN
EOC REPORT
0410 AM OKEMAH OK WIND DAMAGE
05/30/01 OKFUSKEE ROOF DAMAGE
EOC REPORTLocal storm report, May 30, 11:09 AM CDT, 4 hours 53 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1109 AM CDT WED MAY 30 2001
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0120 AM OOLOGAH OK WIND DAMAGE
05/30/01 ROGERS LARGE TREE LIMBS DOWN
POLICE DEPT. REPORTSpecial weather statement, May 30, 1:00 PM CDT, 3 hours 2 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-311100- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 100 PM CDT WED MAY 30 2001 ...A FEW SEVERE THUNDERSTORMS ARE EXPECTED LATE THIS AFTERNOON AND TONIGHT ACROSS PARTS OF EASTERN OKLAHOMA AND NORTHWEST ARKANSAS... EARLY THIS AFTERNOON...A WEAKENING COMPLEX OF THUNDERSTORMS WAS EXITING FAR EASTERN OKLAHOMA AND NORTHWEST ARKANSAS. THIS ACTIVITY HAS PRODUCED AN OUTFLOW BOUNDARY WHICH CURRENTLY STRETCHES FROM EXTREME SOUTHEAST OKLAHOMA JUST NORTH OF THE RED RIVER INTO SOUTHWEST OKLAHOMA. THUNDERSTORMS ARE EXPECTED TO REDEVELOP LATE THIS AFTERNOON NEAR THIS BOUNDARY. FAVORABLE INSTABILITY AND MARGINAL WIND PROFILES SUPPORT SUPERCELL DEVELOPMENT...WITH ISOLATED TORNADOES AND LARGE HAIL POSSIBLE. OTHER ISOLATED SEVERE THUNDERSTORMS MAY DEVELOP BY LATE AFTERNOON OVER PARTS OF NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS ALONG AND AHEAD OF AN APPROACHING COLD FRONT. LARGE HAIL AND DAMAGING WINDS WILL BE THE PRIMARY SEVERE WEATHER THREAT. .SPOTTER ACTIVATION... SPOTTER ACTIVATION IS LIKELY AFTER 5 PM ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS. .DISCUSSION... A THUNDERSTORM OUTFLOW BOUNDARY LOCATED OVER EXTREME SOUTHEAST OKLAHOMA IS EXPECTED TO REMAIN NEARLY STATIONARY OR LIFT SLOWLY NORTH THIS AFTERNOON. FURTHER DESTABILIZATION WILL OCCUR ALONG THE BOUNDARY THIS AFTERNOON...WITH CAPE VALUES EXPECTED TO RANGE FROM 3500 TO 4000 J/KG. WHILE WIND FIELDS ALOFT WILL WEAKEN SOME THIS AFTERNOON...BACKING OF LOW-LEVEL WINDS NEAR THE OUTFLOW BOUNDARY WILL RESULT IN FAVORABLE DIRECTIONAL WIND SHEAR. THIS WIND SHEAR COMBINED WITH STRONG INSTABILITY WILL BE SUPPORTIVE OF SUPERCELLS BY LATE AFTERNOON OR EARLY EVENING...MAINLY SOUTH OF A MCALESTER TO POTEAU LINE. THE BEST TIME FRAME FOR SUPERCELL DEVELOPMENT WILL BE BETWEEN 5 AND 9 PM. THE ATMOSPHERE ACROSS NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS HAS BEEN TEMPORARILY STABILIZED FROM THE EARLY MORNING CONVECTION. HOWEVER...PARTIALLY CLEARING SKIES WILL ALLOW FOR DESTABILIZATION LATER THIS AFTERNOON. ISOLATED SEVERE THUNDERSTORMS MAY DEVELOP ALONG AND AHEAD OF THE APPROACHING COLD FRONT. THREAT TABLE VALID THROUGH 6 AM THURSDAY THREAT AREA 1...SOUTH OF A MCALESTER TO POTEAU LINE THUNDERSTORM PROBABILITY...60 SEVERE PROBABILITY IF STORMS OCCUR...100 SIGNIFICANT SEVERE PROBABILITY IF STORMS OCCUR...50 THREAT AREA 2...NORTH OF A MCALESTER TO POTEAU LINE THUNDERSTORM PROBABILITY...50 SEVERE PROBABILITY IF STORMS OCCUR...30 SIGNIFICANT SEVERE PROBABILITY IF STORMS OCCUR...10 THREAT AREAS DEFINE THE GREATEST RISK. PROBABILITIES ARE IN PERCENT. SIGNIFICANT SEVERE IS DEFINED AS F1 OR GREATER WIND/TORNADO DAMAGE AND/OR GOLFBALL SIZE HAIL OR LARGER. .OTHER HAZARDS... RECENT HEAVY RAINS HAVE SATURATED THE GROUND...AND ANY ADDITIONAL RAIN WILL AGGRAVATE ANY FLOODING PROBLEMS. RELATED GRAPHICAL INFORMATION CAN BE FOUND AT... WWW.SRH.NOAA.GOV/TULSA
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 29, 11:00 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Pawnee | 60 min |
| May 29, 11:57 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Pawnee | 63 min |
| May 30, 12:47 AM CDT | Severe Thunderstorm Warning | TSA | Creek, Tulsa | 58 min |
| May 30, 1:12 AM CDT | Severe Thunderstorm Warning | TSA | Rogers | 48 min |
| May 30, 1:26 AM CDT | Flash Flood Warning | TSA | Creek, Tulsa | 3 hr |
| May 30, 2:07 AM CDT | Flash Flood Warning | TSA | Okmulgee, Wagoner | 3 hr |
| May 30, 2:30 AM CDT | Flash Flood Warning | TSA | Muskogee | 3 hr |
| May 30, 3:15 AM CDT | Flash Flood Warning | TSA | Cherokee | 3 hr |
| May 30, 3:59 AM CDT | Severe Thunderstorm Warning | TSA | Okfuskee | 46 min |
| May 30, 4:18 AM CDT | Severe Thunderstorm Warning | TSA | McIntosh, Okmulgee | 42 min |
| May 30, 5:47 AM CDT | Severe Thunderstorm Warning | TSA | Okfuskee | 43 min |
| May 30, 6:29 AM CDT | Flash Flood Warning | TSA | McIntosh, Muskogee | 3 hr |
| May 30, 6:29 AM CDT | Severe Thunderstorm Warning | TSA | Haskell, McIntosh, Muskogee | 46 min |
| May 30, 6:36 AM CDT | Severe Thunderstorm Warning | TSA | Pittsburg | 24 min |
| May 30, 6:49 AM CDT | Severe Thunderstorm Warning | TSA | Sequoyah | 56 min |
| May 30, 7:04 AM CDT | Severe Thunderstorm Warning | TSA | Latimer | 56 min |
| May 30, 8:58 AM CDT | Flash Flood Warning | TSA | Cherokee, McIntosh, Muskogee, Okfuskee, Okmulgee, Sequoyah | 2 hr |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2001Every severe thunderstorm warning in 2001
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.