Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 191, NWS Tulsa, OK

June 21, 1990Adair County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Jun 21, 1990, 6:35 PM CDT for Adair County, Oklahoma. It was in force for 40 min.

The area

The counties it named.

The facts

Issued
Jun 21, 1990, 6:35 PM CDT (23:35 UTC)
Expired
Jun 21, 1990, 7:15 PM CDT
In force
40 min
Issued by
NWS Tulsa, OK
Area
Whole counties

County Adair 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

Springfield, MO (KUMN), launched 12:00Z, 11.6 hours before the alert went out and 137 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.

Skew-T log-pSkew-T log-p diagram, Springfield, MO at 12:00Z on 1990-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 12:00Z on 1990-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -3 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2230 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
-3 m²/s²
0-3 km storm-relative helicity
41 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KTUL 212334
SVRTUL
OKC001-220015-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
635 PM CDT THU JUN 21 1990
 
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  715 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES ...
 
IN EAST CENTRAL OKLAHOMA
 
   ...NORTHERN ADAIR COUNTY
 
AT 633 PM RADAR INDICATED A SEVERE THUNDERSTORM 8 MILES WEST OF WATTS
MOVING TOWARD THE EAST AT 15 TO 20 MPH. LARGE HAIL AND DAMAGING WINDS
ARE LIKELY WITH THIS STORM. WATTS IS IN THE PATH OF THE STORM.
 
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.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.

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, 4 hours 6 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, 3 hours 11 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, 52 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, 51 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.

IssuedProductOfficeCountiesLasted
Jun 21, 2:40 PM CDTSevere Thunderstorm WarningTSAOsage, Washington50 min
Jun 21, 3:13 PM CDTSevere Thunderstorm WarningTSANowata, Rogers47 min
Jun 21, 3:32 PM CDTSevere Thunderstorm WarningTSAOsage43 min
Jun 21, 3:55 PM CDTTornado WarningTSACraig50 min
Jun 21, 4:07 PM CDTSevere Thunderstorm WarningTSACraig, Rogers53 min
Jun 21, 4:57 PM CDTSevere Thunderstorm WarningTSACraig, Mayes48 min
Jun 21, 5:22 PM CDTSevere Thunderstorm WarningTSARogers53 min
Jun 21, 5:50 PM CDTFlash Flood WarningTSACraig, Rogers3 hr
Jun 21, 6:14 PM CDTSevere Thunderstorm WarningTSAOsage46 min
Jun 21, 6:28 PM CDTTornado WarningTSAOsage47 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.