Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 302, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Jul 11, 2001, 7:34 PM CDT for LeFlore County, Oklahoma. It was in force for 41 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
- Jul 11, 2001, 7:34 PM CDT (00:34 UTC)
- Expired
- Jul 11, 2001, 8:15 PM CDT
- In force
- 41 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County LeFlore County, OK
The radar
The Western Arkansas radar (KSRX), 77 km from the middle of the area, began a volume at 00:33 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
Shreveport, LA (KSHV), launched 00:00Z, 0.6 hours before the alert went out and 249 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
- 1237 J/kg
- Mixed-layer CIN
- -43 J/kg
- Mixed-layer LCL
- 1705 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
353 WUUS54 KTSA 120034 SVRTUL OKC079-120115- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 734 PM CDT WED JUL 11 2001 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN LE FLORE COUNTY IN SOUTHEAST OKLAHOMA * UNTIL 815 PM CDT * AT 734 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 7 MILES EAST OF BIG CEDAR...MOVING SOUTHWEST AT 5 MPH. * SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...OCTAVIA AND BIG CEDAR. HAIL TO THE SIZE OF NICKELS AND WIND GUSTS TO 60 MPH CAN BE EXPECTED IN THE WARNED AREA. LAT...LON 3461 9440 3476 9452 3465 9482 3444 9466
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 Jul 11, 3:50 PM CDT, 3 hours 44 minutes earlier.
Area forecast discussion, Jul 11, 3:50 PM CDT, 3 hours 44 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 350 PM CDT WED JUL 11 2001 .SHORT TERM... ONCE AGAIN TODAY...OVERNIGHT MIN TEMPS ARE THE MAIN CONCERN FOR THE SHORT TERM. POPS WILL ALSO BE OF CONCERN TONIGHT AND EARLY IN THE MORNING MAINLY ACROSS ERN ZNS. A COMPLEX OF TSRA IS EXPECTED TO DEVELOP IN NE KS AND NW MO...AND MOVE TO THE SSE. THIS AREA OF SHRA/TSRA MAY CLIP ERN ZNS AROUND SUNRISE. ETA PCPN FIELD SEEMS A BIT OVERDONE...AND THE AVN SEEMS A LITTLE MORE REASONABLE. WILL CONTINUE WITH SLIGHT CHC POPS FOR THE OVERNIGHT AND EARLY MORNING. .LONG TERM... MAIN SHOW OVER THE NEXT COUPLE OF DAYS...ALONG WITH THE MAIN FORECAST PROBLEM WILL BE THE TIMING OF THE COLD FRONT TO MOVE THROUGH THE AREA...AND WHAT KIND OF AERIAL COVERAGE OF PCPN WILL BE ASSOCIATED WITH IT. CURRENTLY...THINK THAT AREAS TO THE SOUTH AND WEST OF THE FRONT COULD BE BLAZING HOT TOMORROW BEFORE FRONTAL PASSAGE. LOW LEVEL MOISTURE DRIES OUT AND DECENT SW FLOW JUST OFF THE SURFACE WILL MAKE FOR A VERY HOT AFTN. AREAS POST FRONTAL WILL HAVE THE BEST RAIN CHANCES. LOW LEVEL MOISTURE WILL BE MARKEDLY HIGHER ON THE COOL (RELATIVELY SPEAKING) SIDE OF THE FRONT. ATMS AHEAD OF THE FRONT WILL BE CAPPED /H7 TEMPS OF 13C/ AND SFC MOISTURE WILL BE MARGINAL. BEHIND THE FRONT...EVENING/NIGHTTIME TSRA SHOULD OCCUR OVER MUCH OF THE CWFA AT A COUPLE OF DIFFERENT TIMES. FIRST ROUND WILL BE THU PM/FRI AM...AND THE SECOND EVENT FRI PM/SAT AM. THE TIMING OF THIS FRONT IS THE REAL PROBLEM. THE AVN MOVES THE FRONT THROUGH NORTHEAST OK AND FAR NW AR BY MID AFTN...LIMITING THE EXTENT THAT THE AREA WILL HEAT UP. FURTHER TO THE SOUTH AND WEST...VERY HOT TEMPS...POSSIBLY IN EXCESS OF 105F WILL BE MORE LIKELY. THE ETA HOLDS FRONTAL PASSAGE OFF UNTIL EARLY EVENING...WHICH WOULD ALLOW A MUCH LARGER PART OF THE CWFA TO SEE VERY HOT AFTN TEMPS. I AM SOMEWHAT TEMPTED TO TREND TOWARD THE AVN...AS OVERNIGHT CONVECTION ACROSS MO/ERN KS MAY GIVE THE FRONT AN EXTRA PUSH TO THE SOUTH. WILL GENERALLY FOLLOW A COMPROMISE BETWEEN THE ETA AND AVN BIASED TOWARD THE AVN. .EXTENDED DISCUSSION... AFTER THIS WEEKEND/S FRONTAL PASSAGE...MEDIUM RANGE MODELS IN GOOD AGREEMENT IN BUILDING A RIDGE INTO CWFA ONCE AGAIN...WITH A RETURN TO MORE SEASONABLE TEMPS WITH DRY WX. WILL KEEP THE EXTENDED DRY WITH THE EXCEPTION OF THE FIRST PERIOD ON SATURDAY TO ACCOUNT FOR LEFTOVER NOCTURNAL CONVECTION. TEMPS WILL BE NEAR NORMAL THROUGHOUT THE EXTENDED. THANKS FOR THE COORD SGF AND ICT MANNING FCSTID = 24 TUL 79 100 72 90 / 10 10 40 30 FSM 76 99 73 92 / 20 20 50 40 MLC 77 103 75 94 / 10 10 30 40 BVO 74 100 71 90 / 10 10 40 30 FYV 70 91 71 89 / 20 20 50 40 BYV 69 90 70 88 / 20 20 50 40 MIO 72 95 70 90 / 20 20 50 40 MKO 77 100 72 91 / 10 10 40 30 F10 77 103 73 92 / 10 10 40 30 HHW 76 101 73 93 / 10 10 30 40 .TSA... .AR...NONE. .OK...NONE.
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; radar from the NEXRAD Level II archive.