Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 132, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at May 9, 2002, 3:23 AM CDT for LeFlore County, Oklahoma. It was in force for 67 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
- May 9, 2002, 3:23 AM CDT (08:23 UTC)
- Expired
- May 9, 2002, 4:30 AM CDT
- In force
- 67 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County LeFlore County, OK
The radar
The Western Arkansas radar (KSRX), 53 km from the middle of the area, began a volume at 08:34 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 9, 3:45 AM CDT | Hail 0.88 | Spiro, 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 9, 1:15 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 8.4 hours before the alert went out and 237 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
- 1675 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 811 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 285 m²/s²
- 0-3 km storm-relative helicity
- 375 m²/s²
- Significant tornado parameter
- 2.9
- Supercell composite
- 13.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KTSA 090823 SVRTUL OKC079-090930- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 323 AM CDT THU MAY 9 2002 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR NORTHERN LE FLORE COUNTY IN SOUTHEAST OKLAHOMA * UNTIL 430 AM CDT * AT 323 AM CDT...DOPPLER RADAR INDICATED A DANGEROUS SEVERE THUNDERSTORM 16 MILES WEST OF SPIRO...MOVING EAST AT 55 MPH. RADAR INDICATED SOME ROTATION WITH THIS STORM. PEOPLE NEAR ITS PATH SHOULD MOVE TO A SAFE PLACE NOW * SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... SPIRO... POCOLA AND ARKOMA. HAIL TO THE SIZE OF BASEBALLS AND WIND GUSTS TO 70 MPH CAN BE EXPECTED IN THE WARNED AREA. IF YOU ARE IN OR NEAR THE PATH OF THIS STORM...TAKE COVER NOW $$ DRM LAT...LON 3535 9479 3520 9486 3514 9444 3538 9445
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 8, 9:15 PM CDT, 6 hours 8 minutes earlier.
Area forecast discussion, May 8, 9:15 PM CDT, 6 hours 8 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OKLAHOMA 915 PM CDT WED MAY 8 2002 RUNNING A BIT BEHIND WITH ONGOING WEATHER AND GFE PROBLEMS. SE KS CONVECTION HAS RACED OUT AHEAD OF COLD FRONT...WITH WELL-DEFINED OUTFLOW BOUNDARY PUSHING INTO OUR FAR NRN COUNTIES AT THIS TIME. ADDITIONAL SEVERE CONVECTION JUST TO THE W OF OUR NWRN CWA CONTINUES ALONG COLD FRONT. 00Z OUN SOUNDING WAS QUITE IMPRESSIVE WITH NEARLY 4000 J/KG OF CAPE AND JUST A SLIVER OF A CAP LEFT. EXPECT THIS ACTIVITY TO GRADUALLY BECOME MORE LINEAR WITH TIME...AND EVENTUALLY DEVELOP INTO A MCS OVERNIGHT. PROGGD CORFIDI VECTORS SUGGEST MCS WILL PEEL ESE INTO FAR NE OK AND EVENTUALLY NW AR LATER TONIGHT. WILL UPDATE TO TWEAK POPS SOME...AND ADJUST TIMING OF CONVECTION. UPDATE SHOULD BE OUT BETWEEN 930 AND 945 PM. .TSA... AR...NONE. OK...NONE.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 8, 9:33 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 57 min |
| May 8, 10:04 PM CDT | Severe Thunderstorm Warning | TSA | Pawnee | 56 min |
| May 8, 10:26 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 64 min |
| May 8, 11:00 PM CDT | Severe Thunderstorm Warning | TSA | Pawnee | 60 min |
| May 8, 11:15 PM CDT | Flash Flood Warning | TSA | Osage | 4 hr |
| May 8, 11:23 PM CDT | Severe Thunderstorm Warning | TSA | Washington | 52 min |
| May 8, 11:27 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 93 min |
| May 8, 11:40 PM CDT | Severe Thunderstorm Warning | TSA | Adair, Delaware | 65 min |
| May 8, 11:50 PM CDT | Severe Thunderstorm Warning | TSA | Rogers | 55 min |
| May 9, 12:00 AM CDT | Severe Thunderstorm Warning | TSA | Nowata | 60 min |
| May 9, 12:14 AM CDT | Severe Thunderstorm Warning | TSA | Washington | 46 min |
| May 9, 12:20 AM CDT | Severe Thunderstorm Warning | TSA | Craig | 55 min |
| May 9, 12:29 AM CDT | Severe Thunderstorm Warning | TSA | Tulsa | 61 min |
| May 9, 12:32 AM CDT | Severe Thunderstorm Warning | TSA | Osage | 43 min |
| May 9, 12:44 AM CDT | Severe Thunderstorm Warning | TSA | Adair, Creek | 61 min |
| May 9, 1:06 AM CDT | Severe Thunderstorm Warning | TSA | Rogers | 54 min |
| May 9, 1:12 AM CDT | Severe Thunderstorm Warning | TSA | Okfuskee | 63 min |
| May 9, 1:30 AM CDT | Severe Thunderstorm Warning | TSA | Okmulgee, Tulsa, Wagoner | 45 min |
| May 9, 2:09 AM CDT | Severe Thunderstorm Warning | TSA | McIntosh, Muskogee, Okmulgee, Wagoner | 51 min |
| May 9, 2:49 AM CDT | Tornado Warning | TSA | Muskogee | 41 min |
| May 9, 3:03 AM CDT | Tornado Warning | TSA | Sequoyah | 57 min |
| May 9, 3:05 AM CDT | Severe Thunderstorm Warning | TSA | Haskell | 40 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.