Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 158, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at May 12, 2002, 9:39 PM CDT for LeFlore County, Oklahoma. It was in force for 21 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
- May 12, 2002, 9:39 PM CDT (02:39 UTC)
- Expired
- May 12, 2002, 10:00 PM CDT
- In force
- 21 min
- Issued by
- NWS Tulsa, OK
- Area
- Counties, with a storm outline in the text
County LeFlore County, OK
The radar
The Western Arkansas radar (KSRX), 77 km from the middle of the area, began a volume at 02:39 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
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 12, 7:00 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Shreveport, LA (KSHV), launched 00:00Z, 2.7 hours before the alert went out and 248 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
- 1907 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 1337 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 67 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KTSA 130239 SVRTUL OKC079-130300- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 938 PM CDT SUN MAY 12 2002 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN LE FLORE COUNTY IN SOUTHEAST OKLAHOMA * UNTIL 1000 PM CDT * AT 938 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM JUST NORTHWEST OF ZAFRA...MOVING EAST AT 40 MPH. HAIL TO THE SIZE OF NICKLES AND WIND GUSTS TO 60 MPH CAN BE EXPECTED IN THE WARNED AREA. STAY INDOORS AND AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. LAT...LON 3466 9459 3452 9459 3452 9446 3469 9446
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 12, 9:15 PM CDT, 24 minutes earlier.
Area forecast discussion, May 12, 9:15 PM CDT, 24 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 915 PM CDT SUN MAY 12 2002 COLD FRONT/OUTFLOW NOW JUST ABOUT OUT OF CWA TO EAST. STILL PLENTY OF ELEVATED CONVECTION BEHIND FRONT. BACK EDGE OF PRECIPITATION MOVING TO SOUTHEAST AT 18 KT. MID LEVEL UVV AXIS LINES UP WELL WITH PRECIP AND IS PROGGED TO MOVE SOUTHEAST AT 23 KT. EXTRAPOLATING BACK EDGE OF CONVECTION AT 20 KT GIVES END OF PRECIP AT MLC NEAR 04Z...AT FSM NEAR 05Z AND ERN/SERN EDGE OF CWA NEAR 07Z. ONLY MINOR HOUSEKEEPING TYPE OF UPDATE TO CURRENT FORECAST EXPECTED. .TSA... AR...NONE. OK...NONE. MATHEWS
In the hours before
Local storm report, May 12, 3:43 PM CDT, 5 hours 56 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
343 PM CDT SUN MAY 12 2002
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0311 PM 2 NORTH PETTIT OK .88 INCH HAIL 05/12/02
CHEROKEE DIME TO NICKEL HAILLocal storm report, May 12, 3:50 PM CDT, 5 hours 49 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
350 PM CDT SUN MAY 12 2002
...CORRECTION FOR DATE GROUP...
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0311 PM 2 NORTH PETTIT OK .88 INCH HAIL
05/12/02 CHEROKEE DIME TO NICKEL HAILLocal storm report, May 12, 4:07 PM CDT, 5 hours 32 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
407 PM CDT SUN MAY 12 2002
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0400 PM 5 N CHOUTEAU OK .75 INCH HAIL
05/12/02 MAYES REPORTED BY EMA
0404 PM PRYOR OK 1.75 INCH HAIL
05/12/02 MAYES REPORTED BY EMALocal storm report, May 12, 6:18 PM CDT, 3 hours 21 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
618 PM CDT SUN MAY 12 2002
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0417 PM KETCHUM OK .75 INCH HAIL
05/12/02 CRAIG REPORTED BY LAW
ENFORCEMENT
0509 PM 1 E GROVE OK 1.00 INCH HAIL
05/12/02 DELAWARE REPORTED BY EMA
0530 PM 9 NNW TAHLEQUAH OK WIND DAMAGE
05/12/02 CHEROKEE POWER LINES BLOWN DOWN.
REPORTED BY SPOTTERS
0511 PM 3 NE GROVE OK 1.00 INCH HAIL
05/12/02 DELAWARE REPORTED BY SPOTTERS
0528 PM 1 W WESTVILLE OK WIND DAMAGE
05/12/02 ADAIR LARGE TREE BLOWN DOWN.
REPORTED BY LAW ENFORCEMENT
0539 PM STILWELL OK .75 INCH HAIL
05/12/02 ADAIR REPORTED BY LAW
ENFORCEMENT
0540 PM 5 WNW WESTVILLE OK 59 MPH TSTM WIND GUST
05/12/02 ADAIR REPORTED BY OKLAHOMA
MESONETLocal storm report, May 12, 8:43 PM CDT, 56 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
843 PM CDT SUN MAY 12 2002
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0556 PM LINCOLN AR .75 INCH HAIL
05/12/02 WASHINGTON REPORTED BY
PUBLIC
0625 PM BOLEY OK 1.00 INCH HAIL
05/12/02 OKFUSKEE REPORTED BY
EMA
0644 PM BIXBY OK .88 INCH HAIL
05/12/02 TULSA REPORTED BY
SPOTTERS
0720 PM EUREKA SPRINGS AR .88 INCH HAIL
05/12/02 CARROLL REPORTED BY
PUBLIC
0720 PM EUREKA SPRINGS AR WIND DAMAGE
05/12/02 CARROLL SCATTERED TREES DOWNED.
REPORTED BY LAW ENFORCEMENT
0742 PM 2 W BERRYVILLE AR .75 INCH HAIL
05/12/02 CARROLL REPORTED BY
PUBLIC
0738 PM 4 E WILBURTON OK WIND DAMAGE
05/12/02 LATIMER TREES AND POWER POLES
BLOWN DOWN. REPORTED BY EOC
0830 PM SUMMERFIELD OK 1.75 INCH HAIL
05/12/02 LEFLORE REPORTED BY
SPOTTERS
0825 PM POTEAU OK WIND DAMAGE
05/12/02 LEFLORE NUMEROUS 4 TO 5 INCH
DIAMETER LIMBS BLOWN DOWN.
REPORTED BY LAW ENFORCEMENTLocal storm report, May 12, 8:45 PM CDT, 54 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
845 PM CDT SUN MAY 12 2002
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0556 PM LINCOLN AR .75 INCH HAIL
05/12/02 WASHINGTON REPORTED BY PUBLIC
0625 PM BOLEY OK 1.00 INCH HAIL
05/12/02 OKFUSKEE REPORTED BY EMA
0644 PM BIXBY OK .88 INCH HAIL
05/12/02 TULSA REPORTED BY SPOTTERS
0720 PM EUREKA SPRINGS AR .88 INCH HAIL
05/12/02 CARROLL REPORTED BY PUBLIC
0720 PM EUREKA SPRINGS AR WIND DAMAGE
05/12/02 CARROLL SCATTERED TREES DOWNED.
REPORTED BY LAW ENFORCEMENT
0742 PM 2 W BERRYVILLE AR .75 INCH HAIL
05/12/02 CARROLL REPORTED BY PUBLIC
0738 PM 4 E WILBURTON OK WIND DAMAGE
05/12/02 LATIMER TREES AND POWER POLES
BLOWN DOWN. REPORTED BY EOC
0830 PM SUMMERFIELD OK 1.75 INCH HAIL
05/12/02 LEFLORE REPORTED BY SPOTTERS
0825 PM POTEAU OK WIND DAMAGE
05/12/02 LEFLORE NUMEROUS 4 TO 5 INCH
DIAMETER LIMBS BLOWN DOWN.
REPORTED BY LAW ENFORCEMENTThe office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 12, 7:00 PM CDT | Severe Thunderstorm Warning | TSA | Okmulgee | 45 min |
| May 12, 7:06 PM CDT | Severe Thunderstorm Warning | TSA | Pittsburg | 39 min |
| May 12, 7:13 PM CDT | Severe Thunderstorm Warning | TSA | Tulsa | 32 min |
| May 12, 7:36 PM CDT | Severe Thunderstorm Warning | TSA | Latimer | 54 min |
| May 12, 8:00 PM CDT | Severe Thunderstorm Warning | TSA | LeFlore | 60 min |
| May 12, 8:01 PM CDT | Severe Thunderstorm Warning | TSA | Mayes, Rogers | 44 min |
| May 12, 8:26 PM CDT | Severe Thunderstorm Warning | TSA | Sequoyah | 64 min |
| May 12, 8:53 PM CDT | Severe Thunderstorm Warning | TSA | Ottawa | 37 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.