Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 317, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Aug 10, 2001, 3:08 PM CDT for Cherokee County, Oklahoma. It was in force for 52 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, 3:08 PM CDT (20:08 UTC)
- Expired
- Aug 10, 2001, 4:00 PM CDT
- In force
- 52 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Cherokee County, OK
The radar
The Tulsa radar (KINX), 54 km from the middle of the area, began a volume at 20:10 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, 3:10 PM CDT | Thunderstorm Wind 52 E | Tahlequah, OK | Thunderstorm winds estimated at 60 miles an hour blew down large tree limbs. |
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
Springfield, MO (KSGF), launched 12:00Z, 8.1 hours before the alert went out and 136 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
- 904 J/kg
- Mixed-layer CIN
- -202 J/kg
- Mixed-layer LCL
- 1255 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -25 m²/s²
- 0-3 km storm-relative helicity
- -86 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
902 WUUS54 KTSA 102008 SVRTUL OKC021-102100- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 308 PM CDT FRI AUG 10 2001 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN CHEROKEE COUNTY IN EAST CENTRAL OKLAHOMA * UNTIL 400 PM CDT * AT 308 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES NORTHWEST OF SCRAPER...MOVING EAST AT 10 MPH. * SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...SCRAPER AND OAKS. HAIL TO THE SIZE OF DIMES AND WIND GUSTS TO 60 MPH CAN BE EXPECTED IN THE WARNED AREA. LAT...LON 3617 9509 3602 9507 3604 9481 3617 9480
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, 10:15 AM CDT, 4 hours 53 minutes earlier.
Area forecast discussion, Aug 10, 10:15 AM CDT, 4 hours 53 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 1015 AM CDT FRI AUG 10 2001 LATEST VISIBLE SATELLITE IMAGERY SHOWING PARTLY CLOUDY SKIES AT BEST ACROSS THE CWA AT THIS TIME. THIS WILL ALLOW TEMPS TO GET A GOOD HEAD START SO WILL BUMP THEM UP A BIT MAINLY ACROSS THE SOUTHEAST HALF. NEAR THE FRONT...TEMPS ARE WARMING MUCH SLOWER SO WE MAY BE O.K. THERE. FEEL THAT CLOUDS WILL REDEVELOP AS HEATING TAKES PLACE SO WILL GO WITH BECOMING MOSTLY CLOUDY WORDING ACROSS THE NORTHERN ZONES. KEPT PRECIP CHANCES ABOUT THE SAME WITH SCATTERED CONVECTION LIKELY TO POP UP ANYWHERE. UPDATE OUT ON THE HEELS OF THE DISCUSSION. HOWIESON FCSTID = 44 .TSA... AR...NONE. OK...NONE.
In the hours before
Local storm report, Aug 10, 1:08 PM CDT, 2 hours 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, 3:32 PM CDT | Severe Thunderstorm Warning | TSA | Muskogee | 43 min |
| Aug 10, 4:03 PM CDT | Severe Thunderstorm Warning | TSA | McIntosh | 42 min |
| Aug 10, 4:41 PM CDT | Severe Thunderstorm Warning | TSA | Creek, Pawnee | 49 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.