Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 218, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Jul 12, 2002, 1:14 PM CDT for Okfuskee County, Oklahoma. It was in force for 46 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
- Jul 12, 2002, 1:14 PM CDT (18:14 UTC)
- Expired
- Jul 12, 2002, 2:00 PM CDT
- In force
- 46 min
- Issued by
- NWS Tulsa, OK
- Area
- Counties, with a storm outline in the text
County Okfuskee County, OK
The radar
The Norman radar (KTLX), 88 km from the middle of the area, began a volume at 18:15 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 |
|---|---|---|---|
| Jul 12, 12:00 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Norman, OK (KOUN), launched 12:00Z, 6.2 hours before the alert went out and 101 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
- 2786 J/kg
- Mixed-layer CIN
- -19 J/kg
- Mixed-layer LCL
- 707 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- 26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
238 WUUS54 KTSA 121814 SVRTUL OKC107-121900- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 114 PM CDT FRI JUL 12 2002 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... OKFUSKEE COUNTY IN EAST CENTRAL OKLAHOMA * UNTIL 200 PM CDT * AT 114 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 2 MILES NORTHWEST OF CASTLE...MOVING SOUTHEAST AT 20 MPH. * SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...OKEMAH... WELEETKA...BEARDEN...CLEARVIEW...PHAROAH AND CASTLE. WIND GUSTS TO 65 MPH CAN BE EXPECTED IN THE WARNED AREA. STAY INDOORS AND AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. DAMAGING WINDS MAY OCCUR UP TO 5 MILES AHEAD OF THE HEAVY RAIN AND HAIL. MOVE TO A SAFE PLACE NOW. BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AS STORMS APPROACH. LAT...LON 3558 9646 3532 9645 3530 9615 3545 9606
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 Jul 12, 11:04 AM CDT, 2 hours 10 minutes earlier.
Area forecast discussion, Jul 12, 11:04 AM CDT, 2 hours 10 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OKLAHOMA 1104 AM CDT FRI JUL 12 2002 WL KEEP HIGH CHANCE TO LIKELY POPS IN THE FCST FOR TODAY AS COLD FRONT CREEPS ACROSS NORTHERN OKLAHOMA. THE COLD FRONT IS CURRENTLY NEAR A RED ROCK TO JOPLIN LINE. THE AMS AHD OF THE CDFNT IS BECOMING INCREASINGLY UNSTABLE WITH THE ABUNDANT SUNSHINE. CAPE VALUES ARE CURRENTLY IN THE 2000 TO 3000 J/KG ACROSS MUCH OF THE FA. ENHANCING THE THUNDERSTORMS CHANCES TODAY WILL BE A 500 MB TROF PUSHING ACROSS THE AREA IN ASSOCIATED WITH THE UPPER LEVEL LOW MOVING ACROSS MO. COULD SEE SOME SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING WITH DOWNBURST WINDS TO AROUND 60 MPH POSSIBLE. LARGE HAIL WILL ALSO POSSIBLE AS SLIGHTLY COLDER AIR ALOFT ADVECTS INTO THE AREA. WL TWEAK SOME OF THE AFTERNOON MAX TEMPS UP FOR TODAY IN LOCATIONS THAT ARE CURRENTLY RECEIVING ABUNDANT SUNSHINE. FORECAST ID = 10 .TSA... AR...NONE. OK...NONE.
In the hours before
Local storm report, Jul 12, 11:58 AM CDT, 1 hour 16 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1158 AM CDT FRI JUL 12 2002
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0730 PM 2.5 SW RATTAN OK WIND DAMAGE
07/11/02 PUSHMATAHA TREES DOWNED BLOCKING
ROADWAY. REPORTED BY
PUBLIC.
0800 PM 3 E HUGO OK 60 MPH TSTM WIND GUST
07/11/02 CHOCTAW REPORTED BY PUBLIC.Local storm report, Jul 12, 12:23 PM CDT, 51 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1223 PM CDT FRI JUL 12 2002
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1217 PM BIXBY OK 66 MPH TSTM WIND GUST
07/12/02 TULSA MEASURED GUST REPORTED BY
SPOTTERSpecial weather statement, Jul 12, 12:42 PM CDT, 32 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-131200- EASTERN OKLAHOMA / NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 1242 PM CDT FRI JUL 12 2002 ...SEVERE THUNDERSTORMS POSSIBLE ACROSS A GOOD PORTION OF EASTERN OKLAHOMA AND NORTHWEST ARKANSAS THROUGH THIS EVENING... STRONG TO SEVERE THUNDERSTORMS HAVE DEVELOPED ALONG A COLD FRONT THAT IS CURRENTLY MOVING ACROSS NORTHERN OKLAHOMA. ADDITIONAL THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG THE COLD FRONT AND OUTFLOW BOUNDARIES THIS AFTERNOON AND EVENING. SOME OF THE THUNDERSTORMS COULD BECOME SEVERE WITH WIND GUSTS TO 70 MPH THE PRIMARY THREAT. LARGE HAIL WILL ALSO BE POSSIBLE. .DISCUSSION... A COLD FRONT WAS MOVING ACROSS NORTHERN OKLAHOMA EARLY THIS AFTERNOON. STRONG TO SEVERE WILL CONTINUE TO DEVELOP ALONG THE COLD FRONT AND ANY OUTFLOW BOUNDARIES IN PLACE ACROSS THE AREA. THE AIRMASS AHEAD OF THE FRONT IS RATHER UNSTABLE WITH CAPE VALUES IN THE 3000 TO 4000 J/KG RANGE WITH VERY LITTLE CAP IN PLACE. WITH SUCH AN UNSTABLE AIRMASS IN PLACE...70 MPH DOWNBURST WINDS WILL BE POSSIBLE. THE THREAT FOR SEVERE WEATHER WILL DIMINISH AFTER SUNSET AS WE LOSE THE HEAT OF THE DAY AND THE AIRMASS BECOMES MORE STABLE. 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 |
|---|---|---|---|---|
| Jul 11, 7:09 PM CDT | Severe Thunderstorm Warning | TSA | Pushmataha | 36 min |
| Jul 11, 7:50 PM CDT | Severe Thunderstorm Warning | TSA | Choctaw | 40 min |
| Jul 12, 12:11 PM CDT | Severe Thunderstorm Warning | TSA | Muskogee, Okmulgee, Tulsa, Wagoner | 49 min |
| Jul 12, 12:57 PM CDT | Severe Thunderstorm Warning | TSA | Wagoner | 48 min |
| Jul 12, 1:02 PM CDT | Severe Thunderstorm Warning | TSA | Cherokee | 58 min |
| Jul 12, 1:57 PM CDT | Severe Thunderstorm Warning | TSA | Adair, Cherokee, Sequoyah | 63 min |
| Jul 12, 2:11 PM CDT | Severe Thunderstorm Warning | TSA | Delaware | 49 min |
| Jul 12, 4:21 PM CDT | Severe Thunderstorm Warning | TSA | Pushmataha | 54 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.