Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 211, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Jul 10, 2002, 8:09 PM CDT for Muskogee County, Okmulgee County, Oklahoma. It was in force for 51 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 10, 2002, 8:09 PM CDT (01:09 UTC)
- Expired
- Jul 10, 2002, 9:00 PM CDT
- In force
- 51 min
- Issued by
- NWS Tulsa, OK
- Area
- Counties, with a storm outline in the text
Counties Muskogee County, OK, Okmulgee County, OK
The radar
The Tulsa radar (KINX), 57 km from the middle of the area, began a volume at 01:10 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 |
|---|---|---|---|
| Jul 10, 8:15 PM CDT | Thunderstorm Wind 61 E | Muskogee, OK | Thunderstorm winds estimated at 70 miles an hour blew trees and power lines down. |
| Jul 10, 8:25 PM CDT | Thunderstorm Wind 51 M | Beggs, 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.
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 nearest sounding before it
Lamont, OK (KLMN), launched 00:00Z, 1.2 hours before the alert went out and 193 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
- 1555 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 2216 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- -23 m²/s²
- 0-3 km storm-relative helicity
- 138 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
768
WUUS54 KTSA 110109
SVRTUL
OKC101-111-110200-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
809 PM CDT WED JUL 10 2002
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
MUSKOGEE COUNTY IN EAST CENTRAL OKLAHOMA
OKMULGEE COUNTY IN NORTHEAST OKLAHOMA
* UNTIL 900 PM CDT
* AT 809 PM CDT...DOPPLER RADAR INDICATED SEVERE THUNDERSTORMS ALONG
A LINE EXTENDING FROM 7 MILES NORTH OF BEGGS TO 4 MILES NORTHWEST
OF TAFT TO 6 MILES NORTHEAST OF FORT GIBSON...MOVING SOUTH AT 30
MPH.
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 3588 9620 3579 9558 3585 9515 3544 9508
3555 9536 3558 9583 3537 9603What 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 10, 3:00 PM CDT, 5 hours 9 minutes earlier.
Area forecast discussion, Jul 10, 3:00 PM CDT, 5 hours 9 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OKLAHOMA 300 PM CDT WED JUL 10 2002 MID-UPPER LEVEL LOW PRESSURE SYSTEM WAS LOCATED OVER CENTRAL MN THIS AFTERNOON WITH AN ASSOCIATED SFC COLD FRONT EXTENDING FROM WESTERN MN INTO SOUTHWESTERN NE. WITH A SFC TROF ACROSS CENTRAL KS AND INTO MO. WILL SOME WIDELY SCATTERED SHOWERS AND THUNDERSTORMS ACROSS THE AREA THIS EVENING THAT ARE MAINLY DIURNALLY DRIVEN. THUNDERSTORMS CURRENTLY ACROSS KS AND MO WILL LIKELY FORM IN A COMPLEX AND CLIP PORTIONS OF NORTHEASTERN OK AND NORTHWEST AR LATE TONIGHT...WILL GO WITH HIGH CHC POPS ACROSS THOSE AREAS. A OUTFLOW BOUNDARY/PRE-FRONTAL TROF WL SET UP ACROSS THE AREA ON THURSDAY AN WILL SPARK SHOWERS AND THUNDERSTORMS ACROSS THE AREA. SOME OF THE THUNDERSTORMS MAY BECOME SEVERE WITH CAPE VALUES IN THE 2000 TO 3000 J/KG RANGE AND LI VALUES AROUND -6. THE ACTUAL COLD FRONT WILL MOVE THROUGH THE AREA THURSDAY NIGHT INTO FRIDAY AS UPPER LEVEL SYSTEM DROPS INTO THE MID MISSISSIPPI VALLEY...SO WILL CONTINUE SOME TYPE OF POPS THROUGH FRIDAY. COOLED DOWN TEMPS A TAD IN THE EXTENDED PORTION OF THE FCST. MAY HAVE TO ADD SOME POPS FOR WEEKEND FORECAST AND EARLY NEXT WEEK IF AVN IS CORRECT AND THE UPPER LOW BASICALLY CUTS OFF ACROSS OK. TUL 75 91 70 89 / 40 50 30 20 FSM 74 92 71 91 / 40 50 40 30 MLC 73 93 71 90 / 30 50 40 30 BVO 72 91 68 89 / 40 50 30 20 FYV 70 87 67 84 / 50 50 30 20 BYV 72 85 68 84 / 60 50 30 20 MIO 73 87 68 89 / 50 50 30 20 MKO 75 91 71 91 / 40 50 30 20 F10 75 93 71 92 / 30 50 40 30 HHW 76 93 73 91 / 30 50 40 30 FORECAST ID= 10 .TSA... AR...NONE. OK...NONE.
In the hours before
Special weather statement, Jul 10, 7:00 PM CDT, 1 hour 9 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-111200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 700 PM CDT WED JUL 10 2002 A BOW ECHO WILL CONTINUE TO MOVE SOUTH ACROSS NORTHEAST OKLAHOMA THIS EVENING. WIND GUSTS IN EXCESS OF 60 MILES AN HOUR HAVE BEEN REPORTED WITH THIS FEATURE. THE STRONG WINDS MAY PUSH AS FAR SOUTH AS TAHLEQUAH...MUSKOGEE...OKMULGEE AND BRISTOW BEFORE THE STORMS WEAKEN. AN UPDATE TO THIS STATEMENT CAN BE EXPECTED AROUND 9 PM TO ACCOUNT FOR FUTURE TRENDS.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 7:09 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 36 min |
| Jul 10, 7:12 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 33 min |
| Jul 10, 7:32 PM CDT | Severe Thunderstorm Warning | TSA | Adair, Cherokee | 58 min |
| Jul 10, 9:08 PM CDT | Severe Thunderstorm Warning | TSA | Okfuskee | 52 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.