Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 9, NWS Norman, OK

January 16, 1990Greer County, Harmon County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jan 16, 1990, 6:19 PM CST for Greer County, Harmon County, Oklahoma. It was in force for 41 min. 3 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jan 16, 1990, 6:19 PM CST (00:19 UTC)
Expired: Jan 16, 1990, 7:00 PM CST
In force: 41 min
Issued by: NWS Norman, OK
Area: Whole counties

Counties Greer County, OK, Harmon County, OK

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

Time	Report	Where
Jan 16, 6:25 PM CST	Hail 0.75	Harmon, OK
Jan 16, 6:48 PM CST	Hail 0.88	Greer, OK
Jan 16, 7:03 PM CST	Hail 0.75	Greer, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 0.3 hours before the alert went out and 187 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2955 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 89 m²/s²
0-3 km storm-relative helicity: 135 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KOKC 170020
SVROKC
OKC055-057-170100-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
619 PM CST TUE JAN 16 1990
 
THE NATIONAL WEATHER SERVICE IN OKLAHOMA CITY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  700 PM CST
FOR THE FOLLOWING OKLAHOMA LOCATIONS...
 
IN SOUTHWEST OKLAHOMA
 
   ...GREER COUNTY...HARMON COUNTY
 
AT 619 PM RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS FROM BRINKMAN
TO NEAR GOULD MOVING NORTHEAST AT 35 MPH. HAIL UP TO ONE INCH IN
DIAMETER AND STRONG WINDS ARE LIKELY. PEOPLE IN MANGUM AND GRANITE ARE
IN THE PATH OF THESE STORMS.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

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, Jan 16, 1:17 PM CST, 5 hours 2 minutes before

TXZ019-020-161945

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WICHITA FALLS TX
115 PM CDT TUE JAN 16 1990

AT 110 PM CST THE WICHITA FALLS RADAR CONTINUED TO SHOW A LINE OF
VERY STRONG THUNDERSTORMS STRETCHING FROM THE WICHITA COUNTY LINE
NEAR ELECTRA SOUTHWEST TO BENJAMIN. THE STRONGEST STORMS WITHIN
LINE ARE PRODUCING VERY HEAVY RAINS AND COULD ALSO PRODUCE STRONG
WINDS...SMALL HAIL AND DANGEROUS CLOUD TO GROUND LIGHTNING.

THIS LINE WAS INCLUDED IN AN AREA OF NUMEROUS SHOWERS AND OTHER
ISOLATED VERY STRONG THUNDERSTORMS THAT STRETCHED GENERALLY 60
MILES EITHER SIDE OF A LINE FROM NORTHWEST OF OKLAHOMA CITY SOUTH
TO COMANCHE TEXAS.

MOVEMENT OF INDIVIDUAL SHOWERS AND THUNDERSTORMS WAS TO THE NORTHEAST
AT 25 MPH.

Local storm report, Jan 16, 1:48 PM CST, 4 hours 31 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
147 PM CST TUE JAN 16 1990

TIME(CST)    COUNTY         EVENT

115 PM       ALFALFA        NICKEL SIZE HAIL IN ALINE
115 PM       ALFALFA        QUARTER SIZE HAIL 1 MILE SOUTH
                            OF ALINE

Local storm report, Jan 16, 3:18 PM CST, 3 hours 1 minute before

STORM REPORT  DELAYED
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
314 PM CST TUE JAN 16 1990

TIME(CST)    COUNTY         EVENT

107 PM       MAJOR          QUARTER SIZE HAIL 2 MILES NORTHWEST OF
                            ORIENTA

Local storm report, Jan 16, 4:12 PM CST, 2 hours 7 minutes before

STORM REPORT  DELAYED
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
410 PM CST TUE JAN 16 1990

TIME(CST)    COUNTY         EVENT

320 PM       COMANCHE       DIME SIZE HAIL AT CHATTANOOGA

Special weather statement, Jan 16, 4:18 PM CST, 2 hours 1 minute before

TXZ019-020-162330

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WICHITA FALLS TX
415 PM CST TUE JAN 16 1990

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

AT 415 PM RADAR SHOWS SHOWERS AND THUNDERSTORMS A FEW WITH HEAVY RAIN
FROM OKLAHOMA CITY TO WICHITA FALLS SOUTH TO NEAR BRECKENRIDGE.

OTHER THUNDERSTORMS WERE DEVELOPING FROM CHILDRESS INTO WESTERN OKLAHOMA.
MOVEMENT WAS NORTHEAST AT 35 MILES AN HOUR.

A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE
WEATHER TO DEVELOP IN OR NEAR THE WATCH AREA.

Special weather statement, Jan 16, 5:16 PM CST, 1 hour 3 minutes before

TXZ019-020-170030

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WICHITA FALLS TX
517 PM CST TUE JAN 16 1990

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

AT 455 PM RADAR SHOWS SHOWERS AND THUNDERSTORMS A FEW WITH HEAVY RAIN
EAST OF A LINE FROM NEAR BINGER OKLAHOMA TO JUST EAST OF WICHITA FALLS
TO NEAR POSSUM KINGDOM. MOVEMENT WAS NORTHEAST AT 40 MILES AN HOUR.

A LINE OF THUNDERSTORMS...SOME WITH VERY HEAVY RAIN...WERE FROM JUST
NORTHEAST OF CHILDRESS EXTENDING NOTH INTO FAR WESTERN OKLAHOMA. THE
LINE WAS MOVING SLOWLY EAST.

A SEVERE THUNDERSTORM WATCH MEAN&S CONDITIONS ARE FAVORABLE FOR SEVERE
WEATHER TO DEVELOP IN OR NEAR THE WATCH AREA.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 16, 6:45 PM CST	Severe Thunderstorm Warning	OUN	Kiowa, Washita	45 min
Jan 16, 6:54 PM CST	Severe Thunderstorm Warning	OUN	Custer, Washita	51 min
Jan 16, 7:02 PM CST	Severe Thunderstorm Warning	OUN	Greer	43 min
Jan 16, 7:30 PM CST	Severe Thunderstorm Warning	OUN	Kiowa, Washita	45 min
Jan 16, 8:15 PM CST	Severe Thunderstorm Warning	OUN	Caddo, Kiowa, Washita	60 min
Jan 16, 8:57 PM CST	Severe Thunderstorm Warning	OUN	Caddo, Canadian, Grady	63 min
Jan 16, 9:47 PM CST	Severe Thunderstorm Warning	OUN	Canadian, Oklahoma	43 min
Jan 17, 3:56 AM CST	Severe Thunderstorm Warning	OUN	Garvin, McClain	34 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.