Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 20, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Mar 15, 2002, 12:20 PM CST for Latimer County, Oklahoma. It was in force for 25 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Mar 15, 2002, 12:20 PM CST (18:20 UTC)
- Expired
- Mar 15, 2002, 12:45 PM CST
- In force
- 25 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County Latimer County, OK
The radar
The Western Arkansas radar (KSRX), 93 km from the middle of the area, began a volume at 18:24 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 |
|---|---|---|---|
| Mar 15, 12:30 PM CST | Hail 0.88 | Wilburton, 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 nearest sounding before it
Norman, OK (KOUN), launched 12:00Z, 6.3 hours before the alert went out and 199 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
- 996 m above ground
- 0-6 km bulk shear
- 84 kt
- 0-1 km storm-relative helicity
- 326 m²/s²
- 0-3 km storm-relative helicity
- 539 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KTSA 151820 SVRTUL OKC077-151845- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 1220 PM CST FRI MAR 15 2002 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN LATIMER COUNTY IN SOUTHEAST OKLAHOMA * UNTIL 1245 PM CST * AT 1220 PM CST...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 10 MILES WEST OF WILBURTON...MOVING NORTHEAST AT 60 MPH. * SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...WILBURTON. HAIL TO THE SIZE OF DIMES CAN BE EXPECTED IN THE WARNED AREA.
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 Mar 15, 10:10 AM CST, 2 hours 10 minutes earlier.
Area forecast discussion, Mar 15, 10:10 AM CST, 2 hours 10 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 1010 AM CST FRI MAR 15 2002 SFC CDFNT HAS PUSHED TO THE EAST OF THE CWFA THIS MORNING. H8 BOUNDARY STRETCHED OUT ROUGHLY ALONG OR JUST EAST OF THE I-44 CORRIDOR. EASTERN HALF OF THE CWFA UNDER THE INFLUENCE OF MODEST UPR DIVERGENCE IN THE RIGHT ENTRANCE REGION OF THE UPR JET...AND WL STAY THAT WAY FOR MOST OF THE DAY. BUFKIT MODEL FORECAST SOUNDINGS ALSO SHOWING SOME MODEST ELEVATED CAPE ACROSS FAR EASTERN ZONES...WITH ELEVATED LIS APPROACHING -4 DEG C. ALL THIS TO SAY SCATTERED STORMS WILL CONTINUE INTO THE AFTN HOURS ACROSS ERN ZNS. WL GO AHEAD AND RAISE POPS TO THE LOW CHC CATEGORY ACROSS NW AR...AND LEAVE SLGT CHC POPS ACROSS SE OK. COULD SEE SHRA/TSRA ACTIVITY JUST ABOUT ANYWHERE IN THE STRONG BAROCLINIC ZONE OVER THE ERN PART OF THE CWFA. ALSO GIVEN THE AVAILABLE CAPE AND STEEP LAPSE RATES...THERE MAY BE A FEW HAIL REPORTS WITH SOME OF THIS ACTIVITY. UPDATED ZNS OUT IN A FEW...THANKS SGF FOR COORD THIS MORNING MANNING FCSTID = 24 .TSA... AR...NONE. OK...NONE.
In the hours before
Special weather statement, Mar 15, 11:00 AM CST, 1 hour 20 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-161200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 1100 AM CST FRI MAR 15 2002 ...A FEW THUNDERSTORMS POSSIBLE OVER NORTHWEST ARKANSAS AND FAR SOUTHEAST OKLAHOMA THIS AFTERNOON... A COLD FRONT WAS LOCATED THIS MORNING OVER NORTH-CENTRAL ARKANSAS... EXTENDING SOUTHWEST INTO FAR SOUTHEAST OKLAHOMA. SCATTERED THUNDERSTORMS WILL BE POSSIBLE BEHIND THE FRONT...ACROSS NORTHWEST ARKANSAS AND FAR SOUTHEAST OKLAHOMA THROUGH THE AFTERNOON HOURS. SOME OF THESE STORMS COULD BE STRONG...PRODUCING SMALL HAIL... PRIMARILY OVER LE FLORE...SEBASTIAN...MADISON...AND FRANKLIN COUNTIES. THE PRECIPITATION IS EXPECTED TO SHIFT EAST OF THE AREA BY EARLY EVENING AS THE UPPER JET LIFTS NORTHEAST. .SPOTTER ACTIVATION... SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT...HOWEVER EMERGENCY MANAGEMENT OFFICIALS ACROSS NORTHWEST ARKANSAS AND FAR SOUTHEAST OKLAHOMA SHOULD MONITOR THE LATEST FORECASTS THIS AFTERNOON. .DISCUSSION... A FEW THUNDERSTORMS CONTINUE OVER NORTHWEST ARKANSAS THIS MORNING ALONG ELEVATED INSTABILITY AXIS. ISOLATED THUNDERSTORMS WILL CONTINUE TO BE POSSIBLE ALONG AND BEHIND THE COLD FRONT THIS AFTERNOON...AS REGION REMAINS IN RIGHT REAR QUADRANT OF STRONG UPPER JET. FORECAST POINT SOUNDINGS SUPPORT ELEVATED CAPE VALUES BETWEEN 500-750 J/KG OVER FAR SOUTHEAST OKLAHOMA AND WEST-CENTRAL ARKANSAS. GIVEN THE LOW WET BULB ZERO HEIGHTS...SMALL HAIL WILL BE POSSIBLE WITH THE STRONGER CELLS. SURFACE LOW PRESSURE WILL DEVELOP ALONG THE FRONT OVER CENTRAL ARKANSAS THIS AFTERNOON...LIFTING NORTHEAST DURING THE EVENING HOURS WITH PRECIPITATION ENDING. 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 |
|---|---|---|---|---|
| Mar 15, 12:31 PM CST | Severe Thunderstorm Warning | TSA | Haskell | 44 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2002Every severe thunderstorm warning in 2002
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.