Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 322, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Aug 10, 2001, 4:41 PM CDT for Creek County, Pawnee County, Oklahoma. It was in force for 49 min. 1 report came from 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, with what was reported inside it.
The facts
- Issued
- Aug 10, 2001, 4:41 PM CDT (21:41 UTC)
- Expired
- Aug 10, 2001, 5:30 PM CDT
- In force
- 49 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Creek County, OK, Pawnee County, OK
The radar
The Tulsa radar (KINX), 72 km from the middle of the area, began a volume at 21:45 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 |
|---|---|---|---|
| Aug 10, 4:50 PM CDT | Hail 0.75 | Hallett, 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
Lamont, OK (KLMN), launched 12:00Z, 9.7 hours before the alert went out and 111 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
- 190 J/kg
- Mixed-layer CIN
- -242 J/kg
- Mixed-layer LCL
- 1644 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- -10 m²/s²
- 0-3 km storm-relative helicity
- -11 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
146 WUUS54 KTSA 102141 SVRTUL OKC037-117-102230- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 441 PM CDT FRI AUG 10 2001 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN CREEK COUNTY IN NORTHEAST OKLAHOMA EASTERN PAWNEE COUNTY IN NORTHEAST OKLAHOMA * UNTIL 530 PM CDT * AT 441 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER WESTPORT...MOVING EAST AT 10 MPH. * SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...MANNFORD AND WESTPORT. HAIL TO THE SIZE OF NICKELS AND WIND GUSTS TO 60 MPH CAN BE EXPECTED IN THE WARNED AREA. LAT...LON 3621 9650 3604 9640 3613 9612 3631 9631
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 Aug 10, 3:30 PM CDT, 1 hour 11 minutes earlier.
Area forecast discussion, Aug 10, 3:30 PM CDT, 1 hour 11 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 330 PM CDT FRI AUG 10 2001 THUNDERSTORMS DEVELOPING ACROSS THE CWA AT THIS TIME. TEMPERATURES CLIMBED QUITE NICELY TODAY AS SKIES REMAINED PARTLY CLOUDY INSTEAD OF MOSTLY CLOUDY. FRONT STALLED ACROSS NORTHERN PORTION OF CWA DURING THE AFTERNOON HOURS. FRONT POSITION SHOULD REMAIN ACROSS THE CWA TONIGHT MOVING A LITTLE FURTHER SOUTH. THIS WILL KEEP CHANCE POPS GOING FOR TONIGHT INTO TOMORROW. FRONTAL POSITION AND CLOUDS WILL REALLY PLAY INTO TEMPERATURE FORECAST NEXT COUPLE OF DAYS AS WELL. DRYING MOVING INTO THE AREA ON SUNDAY FROM THE NORTH SO WILL BEGIN TO DRY THINGS OUT. EXTENDED STILL LOOKS DRY UNTIL THURSDAY INTO FRIDAY AS NEXT FRONTAL SYSTEM MOVES SOUTH INTO THE AREA. WILL INTRODUCE POPS ON FRIDAY FOR NOW AS IT APPEARS TO BE THE MORE LIKELY DAY AT THIS TIME. HOWIESON FCSTID = 44 ...PRELIMINARY NUMBERS CHANGES LIKELY... TUL 70 92 71 93 / 30 30 20 20 FSM 71 93 71 95 / 40 40 30 20 MLC 71 94 72 94 / 40 40 30 20 BVO 66 89 67 90 / 30 30 20 10 FYV 65 87 66 89 / 30 30 20 20 BYV 65 87 66 89 / 30 30 20 20 MIO 67 88 67 87 / 30 30 20 20 MKO 70 92 71 93 / 30 30 20 20 F10 70 92 71 93 / 30 30 20 20 HHW 75 97 74 96 / 40 40 30 30 .TSA... AR...NONE. OK...NONE.
In the hours before
Local storm report, Aug 10, 1:08 PM CDT, 3 hours 33 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
108 PM CDT FRI AUG 10 2001
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0740 PM 1 N BLUEJACKET OK WIND DAMAGE
08/09/01 CRAIG TRAILER HOUSE ELEVATED
FOR TRANSPORTING ROLLED
OVER AND TREE DAMAGE
RPTD BY EM.
TLThe office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 10, 3:02 PM CDT | Severe Thunderstorm Warning | TSA | Muskogee, Okmulgee | 43 min |
| Aug 10, 3:08 PM CDT | Severe Thunderstorm Warning | TSA | Cherokee | 52 min |
| Aug 10, 3:32 PM CDT | Severe Thunderstorm Warning | TSA | Muskogee | 43 min |
| Aug 10, 4:03 PM CDT | Severe Thunderstorm Warning | TSA | McIntosh | 42 min |
| Aug 10, 5:55 PM CDT | Severe Thunderstorm Warning | TSA | Okfuskee | 35 min |
| Aug 10, 6:12 PM CDT | Flash Flood Warning | TSA | Okfuskee | 93 min |
| Aug 10, 6:26 PM CDT | Severe Thunderstorm Warning | TSA | Okfuskee | 49 min |
| Aug 10, 6:58 PM CDT | Severe Thunderstorm Warning | TSA | Pushmataha | 47 min |
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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.