Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 43, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Apr 2, 2001, 8:54 AM CDT for Craig County, Ottawa County, Oklahoma. It was in force for 66 min. No storm report in the archive falls 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.
The facts
- Issued
- Apr 2, 2001, 8:54 AM CDT (13:54 UTC)
- Expired
- Apr 2, 2001, 10:00 AM CDT
- In force
- 66 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Craig County, OK, Ottawa County, OK
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 2, 6:45 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 1.9 hours before the alert went out and 108 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
- 1012 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 324 m²/s²
- 0-3 km storm-relative helicity
- 297 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KTSA 021355 SVRTUL OKC035-115-021500- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 854 AM CDT MON APR 2 2001 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEASTERN CRAIG COUNTY IN NORTHEAST OKLAHOMA NORTHERN OTTAWA COUNTY IN NORTHEAST OKLAHOMA * UNTIL 1000 AM CDT * AT 854 AM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 12 MILES NORTHWEST OF WELCH...MOVING EAST AT 30 MPH. * SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...WELCH... PICHER...QUAPAW...COMMERCE AND MIAMI. HAIL TO THE SIZE OF QUARTERS AND WIND GUSTS TO 60 MPH CAN BE EXPECTED IN THE WARNED AREA. LAT...LON 3700 9532 3683 9520 3682 9462 3701 9463
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 Apr 2, 2:20 AM CDT, 6 hours 34 minutes earlier.
Area forecast discussion, Apr 2, 2:20 AM CDT, 6 hours 34 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 220 AM CDT MON APR 2 2001 LOOK AT 00Z RAOBS SHOWS PRETTY DECENT CAPPING TO OVERCOME AT KOUN FOR ELEVATED CONVECTION THIS MORNING HOWEVER NO SOUNDING WAS AVAILABLE ON AWIPS FOR KDDC WHERE CAP MAY BE WEAKER. WOULD BE SURPRISED IF SOME STORMS DON'T FORM SOMEWHERE NEAR US OR FURTHER NORTH SOON. MOISTURE SURGES LIKE THIS USUALLY PRODUCE INTERESTING WEATHER. NICE DIFFERENCE IN SFC TEMPS/DEW POINTS SEEN BETWEEN KTUL AND KBVO AND SE KS NOW. OBVIOUSLY CLOUD AND POP FORECAST FOR TODAY WILL DEPEND ON WHERE AND IF CONVECTION FORMS IN THE NEXT FEW HOURS. TEMPS SHOULD BE VERY WARM TODAY SOUTH OF THE EXPECTED WARM FRONT POSITION THIS AFTERNOON... ALONG A KTUL TO KFYV LINE. WARM FRONT SHOULD LIFT NORTH SOME TONIGHT TAKING MUCH OF THE THREAT OF PRECIP WITH IT. MODELS SHOWING MODERATELY STRONG WESTERLY WINDS AT 850 AND 900 MB TONIGHT AND TUESDAY SOUTH OF THE FRONT...SO DRYLINE SHOULD MOVE WELL INTO OK. NOT MUCH CHANCE OF PRECIP SOUTH OF THE FRONT. MESO-ETA GOES STARK-RAVING MAD WITH SFC DEW POINTS AND SFC-BASED LI TUES AFTERNOON WITH DEW POINT VALUES NEAR 75F IN SE OK AND ERN TX PRODUCING 5000+ J/KG CAPES AND SFC BASED LI'S OF -13C. THATS PRETTY FUNNY. OBSERVED DEW POINTS IN SRN TX ARE IN THE UPPER 60S. BY TUES NIGHT...FRONT GOES STATIONARY ACROSS NW OK INTO SE KS. AGAIN PRECIP CHCS WILL BE SLIM SOUTH OF THE FRONT WITH STRONG CAPPING INVERSION AND NO DEEP LOW LEVEL MOISTURE. NO SYNOPTIC LIFT TO BREAK CAP OR MOISTEN THE DRY LAYER EITHER. IN LATER PERIODS...ALSO HARD TO SEE HOW ANY CONVECTION WILL FORM WITH NO LIFT OR GOOD BOUNDARY. MAY SEE SOME STORMS TO OUR WEST THURS NIGHT THROUGH FRIDAY NIGHT. SATURDAY STILL LOOKS LIKE THE BIG DAY. WILL LOOK AT THE NEW MRF BEFORE MAKING ANY CHANGES TO EXTENDED. WILL LIKELY BE REMOVING POPS FOR MOST AREAS BEFORE FRIDAY. FCSTID = 26 TUL 75 63 83 63 / 30 10 10 10 FSM 73 59 85 60 / 20 20 10 20 MLC 77 65 85 64 / 20 10 10 20 BVO 72 59 82 60 / 30 10 10 10 FYV 70 57 79 57 / 40 20 10 10 BYV 69 57 79 57 / 40 20 10 10 MIO t 72 59 80 58 / 40 20 10 10 MKO 75 62 84 62 / 30 10 10 10 F10 76 64 84 63 / 30 10 10 10 HHW 78 66 85 66 / 20 10 10 20 .TSA... AR...NONE. OK...NONE.
In the hours before
Special weather statement, Apr 2, 5:00 AM CDT, 3 hours 54 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-031200- SPECIAL WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 500 AM CDT MON APR 2 2001 ...STORMY WEATHER EXPECTED BY THE END OF THE WEEK... SPRINGTIME WEATHER HAS RETURNED TO THE AREA THIS WEEK. WARM SOUTHERLY WINDS HAVE BROUGHT INCREASING MOISTURE TO EASTERN OKLAHOMA AND NORTHWEST ARKANSAS. THIS WARM AND WINDY PATTERN IS EXPECTED TO CONTINUE THROUGH THE REST OF THE WEEK. A VERY STRONG UPPER LEVEL STORM SYSTEM IS DEVELOPING OFF THE PACIFIC COAST. COMPUTER MODEL FORECASTS HAVE BEEN CONSISTENT RECENTLY IN FORECASTING THIS UPPER LEVEL STORM SYSTEM TO MOVE INTO THE SOUTHCENTRAL U.S. ON FRIDAY. WITH THE WARM AND UNSTABLE AIRMASS IN PLACE AT THIS TIME...STRONG TO SEVERE THUNDERSTORMS WILL BE LIKELY ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS AS THE SYSTEM MOVES THROUGH BY THE END OF THE WEEK. WHILE IT IS TOO SOON TO PREDICT THE EXACT TIMING AND STR<ENGTH OF THE STORM SYSTEM...RESIDENTS AND EMERGENCY MANAGERS SHOULD BE PREPARED FOR THE POSSIBILITY OF A PERIOD OF SIGNIFICANT SEVERE WEATHER ON FRIDAY AND SATURDAY.
Special weather statement, Apr 2, 6:00 AM CDT, 2 hours 54 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-031200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 600 AM CDT MON APR 2 2001 ...A FEW SEVERE THUNDERSTORMS ARE POSSIBLE THIS MORNING INTO EARLY THIS AFTERNOON... EARLY THIS MORNING A SURFACE LOW PRESSURE SYSTEM WAS LOCATED OVER THE NORTHERN TEXAS PANHANDLE WITH A WARM FRONT STRETCHING ACROSS NORTHERN OKLAHOMA INTO THE EASTERN PART OF THE STATE. SCATTERED SHOWERS HAVE DEVELOPED NORTH OF THE FRONT ACROSS KANSAS OVERNIGHT AND ADDITIONAL SHOWERS AND THUNDERSTORMS WILL REMAIN POSSIBLE DOWN INTO NORTHEAST OKLAHOMA THROUGH THE MORNING. IF STORMS DEVELOP...A FEW WILL HAVE THE POTENTIAL TO BECOME SEVERE THIS MORNING WITH LARGE HAIL THE PRIMARY THREAT. THE POTENTIAL FOR A FEW SEVERE STORMS WILL ALSO CONTINUE INTO THE EARLY AFTERNOON HOURS AS ANY STORMS THAT DEVELOP MOVE FROM NORTHEAST OKLAHOMA INTO NORTHWEST ARKANSAS. .SPOTTER ACTIVATION... SPOTTER ACTIVATION MAY BE REQUIRED LATER THIS MORNING INTO THE EARLY AFTERNOON HOURS IN PARTS OF NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS. THE MOST LIKELY AREAS FOR SEVERE WEATHER WILL BE GENERALLY TO THE NORTH OF A LINE FROM BRISTOW TO FORT SMITH. EMERGENCY MANAGEMENT AGENCIES...STORM SPOTTER ORGANIZATIONS AND OTHER CONCERNED INTERESTS SHOULD CONTINUE TO MONITOR THE WEATHER FOR LATER UPDATES. .DISCUSSION... A STRONG LOW-LEVEL JET OF 40 TO 50 KNOTS EARLY THIS MORNING WAS CONTINUING TO TRANSPORT MOISTURE NORTHWARD AND PROVIDE LIFT OVER THE FRONTAL BOUNDARY. AN AXIS OF ELEVATED INSTABILITY IS PRESENT NORTH OF THE FRONT NEAR THE KANSAS STATE LINE DOWN INTO NORTHEAST OKLAHOMA. ANY STORMS THAT DEVELOP NEAR THE AXIS OF INSTABILITY WILL MOVE ACROSS NORTHEAST OKLAHOMA THIS MORNING AND INTO NORTHWEST ARKANSAS. THE ELEVATED INSTABILITY WILL LIKELY BE SUFFICIENT FOR A FEW OF THE STORMS TO BECOME SEVERE WITH LARGE HAIL THE PRIMARY THREAT. BY LATER TODAY THE WARM FRONT IS EXPECTED TO LIFT TO THE NORTH OF THE AREA. A STRONG MID LEVEL CAP WILL EXIST TO THE SOUTH OF THE BOUNDARY AND SHOULD PREVENT THE DEVELOPMENT OF THUNDERSTORMS OVER EASTERN OKLAHOMA AND NORTHWEST ARKANSAS THROUGH THE NIGHT TONIGHT. THREAT TABLE VALID THROUGH 1200 UTC TUESDAY THREAT AREA 1...ALONG AND NORTH OF A BRISTOW TO FORT SMITH LINE. THUNDERSTORM PROBABILITY...30 SEVERE PROBABILITY IF STORMS OCCUR...40 SIGNIFICANT SEVERE PROBABILITY IF STORMS OCCUR...10 THREAT AREAS DEFINE THE GREATEST RISK. PROBABILITIES ARE IN PERCENT. SIGNIFICANT SEVERE WEATHER IS DEFINED AS F1 OR GREATER WIND/TORNADO DAMAGE AND/OR GOLF BALL SIZE HAIL OR LARGER. $|$ RELATED GRAPHICAL INFORMATION CAN BE FOUND AT WWW.SRH.NOAA.GOV/TULSA AN UPDATED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AROUND 1 PM TODAY.
Special weather statement, Apr 2, 7:53 AM CDT, 1 hour 1 minute before
SIGNIFICANT WEATHER ALERT NATIONAL WEATHER SERVICE TULSA OK 753 AM CDT MON APR 2 2001 OKZ056>058-021400- CRAIG-NOWATA-OTTAWA- 753 AM CDT MON APR 2 2001 .NOW... AT 753 AM CDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 4 MILES NORTH OF WANN...MOVING EAST AT 30 MPH. THIS STORM WILL MOVE ALONG THE OKLAHOMA AND KANSAS STATE LINE AND WILL BE CAPABLE OF PRODUCING SMALL HAIL AND WIND GUSTS TO 50 MPH.
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; the sounding from the Mesonet's radiosonde archive.