Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 197, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Jun 21, 1990, 8:15 PM CDT for Creek County, Oklahoma. It was in force for 30 min.
The area
The counties it named.
The facts
- Issued
- Jun 21, 1990, 8:15 PM CDT (01:15 UTC)
- Expired
- Jun 21, 1990, 8:45 PM CDT
- In force
- 30 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County Creek County, OK
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 1.3 hours before the alert went out and 120 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
- 463 J/kg
- Mixed-layer CIN
- -197 J/kg
- Mixed-layer LCL
- 2365 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 78 m²/s²
- 0-3 km storm-relative helicity
- 110 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTUL 220114 SVRTUL OKC037-220145- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 815 PM CDT THU JUN 21 1990 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 845 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES ... IN NORTHEAST OKLAHOMA ...NORTHERN CREEK COUNTY AT 8 13 PM THE TULSA WEATHER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS EXTENDING FROM CENTRAL OSAGE COUNTY TO NORTHERN CREEK COUNT...NEAR LAKE KEYSTONE. WIND GUSTS TO 80 MPH COULD OCCUR WITH THIS STORM. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH... LARGE HAIL...DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER... SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. Y REMAIN CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS. KEEP TUNED TO THIS STATION FOR THE LATEST WEATHER BULLETINS.
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.
In the hours before
Special weather statement, Jun 21, 2:29 PM CDT, 5 hours 46 minutes before
OKC105-113-117-143-147-212030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 229 PM CDT THU JUN 21 1990 ...THUNDERSTORMS DEVELOPING RAPIDLY IN NORTHERN OKLAHOMA... AT 220 PM RADAR INDICATED SCATTERED THUNDERSTORMS...SOME WITH VERY HEAVY RAIN...DEVELOPING RAPIDLY IN NORTH-CENTRAL AND NORTHEAST OKLAHOMA. THE STRONGEST STORMS WERE LOCATED JUST NORTHEAST OF PONCA CITY IN KAY COUNTY...JUST NORTHEAST OF BARNSDALL IN OSAGE COUNTY...AND ABOUT 15 MILES NORTH OF NOWATA IN NOWATA COUNTY. MOVEMENT WAS TOWARD THE EAST NORTHEAST AT ABOUT 20 MILES AN HOUR. THUNDERSTORMS SHOULD CONTINUE TO DEVELOP THIS AFTERNOON ACROSS NORTHEASTERN OKLAHOMA. PEOPLE IN THE PATHS OF THESE STORMS CAN 1EXPECT BRIEF HEAVY RAINFALL...STRONG WINDS...AND POSSIBLY SMALL HAIL. RESIDENTS OF NORTHEASTERN OKLAHOMA SHOULD KEEP ALERT FOR THE POSSIBLILITY OF SEVERE WEATHER DEVELOPMENT THE REST OF THIS AFTERNOON AND TONIGHT.
Local storm report, Jun 21, 3:24 PM CDT, 4 hours 51 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
325 PM CDT THU JUN 21 1990
TIME/CDT COUNTY EVENT
303 PM OSAGE LARGER THAN GOLFBALL SIZE HAIL JUST SOUTHWEST
OF BARTLESVILLE. REPORTED BY BARTLESVILLE EOC.Local storm report, Jun 21, 5:43 PM CDT, 2 hours 32 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
530 PM CDT THU JUN 21 1990
TIME/CDT COUNTY EVENT
344 PM NOWATA TORNADO TOUCHED DOWN 10 MILES NORTHWEST OF
NOWATA.
410 PM OSAGE DIME SIZE HAIL AT FAIRFAX.
428 PM CRAIG TORNADO SOUTHEAST OF CENTRALIA.
450 PM CRAIG DIME SIZE HAIL AT WHITE OAK.
503 PM CRAIG 60 MILE AN HOUR AT WELCH.
420 PM CRAIG LOAD BLOWN OFF SEMI-TRUCK 3 MILES EAST OF
VINITA.
537 MAYES GOLFBALL SIZE HAIL AT LANGLEY.Local storm report, Jun 21, 5:44 PM CDT, 2 hours 31 minutes before
STORM REPORT CORRECTED
NATIONAL WEATHER SERVICE TULSA, OK
545 PM CDT THU JUN 21 1990
TIME/CDT COUNTY EVENT
344 PM NOWATA TORNADO TOUCHED DOWN 10 MILES NORTHWEST OF
NOWATA.
410 PM OSAGE DIME SIZE HAIL AT FAIRFAX.
428 PM CRAIG TORNADO SOUTHEAST OF CENTRALIA.
450 PM CRAIG DIME SIZE HAIL AT WHITE OAK.
503 PM CRAIG 60 MILE AN HOUR AT WELCH.
420 PM CRAIG LOAD BLOWN OFF SEMI-TRUCK 3 MILES EAST OF
VINITA.
537 MAYES GOLFBALL SIZE HAIL AT LANGLEY.The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 7:03 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 42 min |
| Jun 21, 7:12 PM CDT | Tornado Warning | TSA | Osage | 48 min |
| Jun 21, 8:02 PM CDT | Severe Thunderstorm Warning | TSA | Pawnee | 28 min |
| Jun 21, 8:10 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 50 min |
| Jun 21, 8:20 PM CDT | Severe Thunderstorm Warning | TSA | Tulsa | 40 min |
| Jun 21, 8:44 PM CDT | Severe Thunderstorm Warning | TSA | Rogers, Wagoner | 46 min |
| Jun 21, 9:54 PM CDT | Severe Thunderstorm Warning | TSA | Sequoyah | 66 min |
| Jun 21, 10:50 PM CDT | Severe Thunderstorm Warning | TSA | LeFlore | 55 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 1990Every severe thunderstorm warning in 1990
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.