Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 113, NWS Norman, OK

April 15, 1990Love County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Apr 15, 1990, 8:05 PM CDT for Love County, Oklahoma. It was in force for 40 min.

The area

The counties it named.

The facts

Issued: Apr 15, 1990, 8:05 PM CDT (01:05 UTC)
Expired: Apr 15, 1990, 8:45 PM CDT
In force: 40 min
Issued by: NWS Norman, OK
Area: Whole counties

County Love 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, 1.1 hours before the alert went out and 142 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 532 J/kg
Mixed-layer CIN: -148 J/kg
Mixed-layer LCL: 907 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 86 m²/s²
0-3 km storm-relative helicity: 173 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 5.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KOKC 160106
SVROKC
OKC085-160145-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
805 PM CDT SUN APR 15 1990
 
THE NATIONAL WEATHER SERVICE IN OKLAHOMA CITY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  845 PM CDT
FOR THE FOLLOWING OKLAHOMA LOCATIONS...
 
IN SOUTHEAST OKLAHOMA
 
   ...LOVE COUNTY
 
AT 804 PM RADAR INDICATED SEVERE THUNDERSTORMS BUILDING WESTWARD FROM
MARSHALL COUNTY INTO LOVE COUNTY. THE STRONGEST STORMS... CAPABLE OF
PRODUCING HAIL UP TO GOLFBALL SIZE... RAN FROM 6 MILES NORTH OF
MARIETTA EASTWARD TO NEAR LEBANON. MOVEMENT WAS SOUTH AT 15 MPH BUT
ADDITIONAL DEVELOPMENT WESTWARD INTO THE WESTERN PART OF THE COUNTY IS
POSSIBLE.
 
 
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

Local storm report, Apr 15, 4:07 PM CDT, 3 hours 58 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
405 PM CDT SUN APR 15 1990

TIME(CDT)    COUNTY           EVENT

351  PM      PONTOTOC         1 INCH HAIL AT FITTSTOWN

Special weather statement, Apr 15, 4:34 PM CDT, 3 hours 31 minutes before

TXZ019-020-1522300

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WICHITA FALLS TX
430 PM CDT SUN APR 15 1990

...A TORNADO WATCH IS IN EFFECT FOR HARDEMAN...FOARD...WILBARGER...
KNOX...BAYLOR...WICHITA...ARCHER...CLAY...JACK...MONTAGUE AND
YOUNG COUNTIES UNTIL 10 PM CDT...

AT 430 PM CDT WICHITA FALLS RADAR A VERY STRONG THUNDERSTORM NORTHEAST
OF ARDMORE MOVING TO THE SOUTHEAST AT 35 MPH. AT THIS TIME NO ACTIVITY
WAS OCCURRING IN THIS PORTION OF NORTH CENTRAL TEXAS.

A TORNADO WATCH MEANS CONDITIPNS ARE FAVORABLE FOR SEVERE STORMS AND
POSSIBLE TORNADOES TO DEVELOP IN OR CLOSE TO THE WATCH AREA. KEEP ABREAST
OF THE LATEST WEATHER CONDITIONS SHOULD SEVERE WEATHER DEVELOP IN THIS
AREA.~

Local storm report, Apr 15, 4:38 PM CDT, 3 hours 27 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
437 PM CDT SUN APR 15 1990

TIME(CDT)    COUNTY           EVENT

435  PM      COAL             GOLFBALL-SIZED HAIL IN CLARITA

Special weather statement, Apr 15, 5:52 PM CDT, 2 hours 13 minutes before

TXZ019-020-152345-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WICHITA FALLS TX
543 PM CDT SUN APR 15 1990

...TORNANDO WATCH IN EFFECT FOR WICHITA FALLS AND SURROUNDING COUNTIES
UNTIL 10 PM...

SHORTLY BEFORE 6 PM WICHITA FALLS RADAR SHOWED STRONG THUNDERSTORMS
WEST OF ABILENE AND EAST OF ARDMORE OKLAHOMA. A THUNDERSTORM HAS
DEVELOPED QUITE RAPIDLY OVER SOUTH CENTRAL OKLAHOMA NEAR THE RED RIVER
NORTH OF NOCONA. MOVEMENT OF THUNDERS/TORM ACTIVITY SOUTHEAST.

A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOS TO DEVELOP
IN THIS PORTION OF NORTH CENTRAL TEXAS. STAY TUNED TO MEDIA OR NOAA
WEATHER BROADCASTS FOR LATER STATEMENTS OR POSSIBLE WARNINGS.

The office that day

Everything else NWS Norman, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 15, 7:25 PM CDT	Severe Thunderstorm Warning	OUN	Bryan, Marshall	65 min
Apr 16, 6:40 PM CDT	Severe Thunderstorm Warning	OUN	Garvin, Stephens	65 min
Apr 16, 6:45 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln	45 min
Apr 16, 6:52 PM CDT	Severe Thunderstorm Warning	OUN	Marshall	38 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1990 Every 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.