Severe Thunderstorm Warning 1, NWS Norman, OK

Issued

Jan 23, 2002, 12:20 PM CST (18:20 UTC)

Expired

Jan 23, 2002, 1:00 PM CST

In force

40 min

Issued by

NWS Norman, OK

Area

Counties, with a storm outline in the text

Counties Comanche County, OK, Grady County, OK

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.

000 
WUUS54 KOUN 231820
SVROKC
OKC031-051-231900-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
1220 PM CST WED JAN 23 2002

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  GRADY COUNTY IN CENTRAL OKLAHOMA
  NORTHEAST COMANCHE COUNTY IN SOUTHWEST OKLAHOMA

* UNTIL 100 PM CST

* AT 1220 PM CST...DOPPLER RADAR DETECTED A SEVERE THUNDERSTORM 3
  MILES SOUTHWEST OF STERLING...MOVING NORTHEAST AT 50 MPH.

* LOCATIONS IN THE WARNING INCLUDE ELGIN...NINNEKAH...NORGE...RUSH
  SPRINGS...STERLING AND TABLER

HAIL UP TO THE SIZE OF NICKELS IS LIKELY WITH THIS SEVERE 
THUNDERSTORM.

LAT...LON 3476 9833 3461 9819 3461 9819 3471 9809
          3481 9784 3509 9778 3494 9807 3486 9806
          3485 9820


30

NWS Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Jan 23, 9:43 AM CST, 2 hours 37 minutes earlier.

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
943 AM CST WED JAN 23 2002

AN UPDATED FORECAST WILL BE ISSUED SHORTLY TO INCLUDE HIGHER AND
MUCH MORE WIDESPREAD SHOWER AND THUNDERSTORM CHANCES.  WITH SHOWERS
AND STORMS ALREADY DEVELOPING IN OUR SOUTHWEST CORNER... AND ALL
SHORT-TERM MODELS INDICATING SUFFICIENT MOISTURE... LIFT... AND
INSTABILITY... HAVE OPTED TO INCLUDE CHANCE POPS FOR ABOUT THE
SOUTHEAST 2/3 OF THE FORECAST AREA.  HAVE ALSO RAISED POPS TO 60
PERCENT ACROSS THE SOUTH-CENTRAL AND SOUTHEAST.

OTHERWISE... THE ONLY INTENTIONAL CHANGES WERE TO UPDATE THE
POSITION OF THE WIND SHIFT ASSOCIATED WITH THE COLD FRONT THAT IS
NOW ABOUT HALFWAY ACROSS OUR AREA... AND TO REMOVE THE MENTION OF
FOG.

FURTHER UPDATES WILL LIKELY BE NEEDED TO DEAL WITH CONTINUING
TEMPORAL WORDING... AND PERHAPS SOME FINE-TUNING OF THE
PRECIPITATION DESCRIPTIONS.

FCSTID = 23 = CMS

.OUN...
OK...NONE.
TX...NONE.

In the hours before

OKZ004>048-050>052-TXZ083>090-232000-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1211 PM CST WED JAN 23 2002

ISOLATED SEVERE THUNDERSTORMS WILL BE POSSIBLE THIS AFTERNOON ACROSS
PARTS OF CENTRAL AND SOUTHERN OKLAHOMA AND WESTERN NORTH TEXAS. THE
SEVERE STORMS WILL BE POSSIBLE MAINLY ALONG AND SOUTHEAST OF
INTERSTATE 44.

A COLD FRONT WILL CONTINUE TO ADVANCE SOUTHEAST ACROSS THE AREA
THIS AFTERNOON. WARM... MOIST AIR AHEAD OF THE FRONT WILL CONTRIBUTE
TO UNUSUALLY STRONG INSTABILITY FOR JANUARY.  LOW FREEZING LEVELS
WILL ALSO INCREASE THE RISK OF HAIL. HOWEVER... ONLY A VERY FEW OF
THE STORMS THIS AFTERNOON ARE EXPECTED TO PRODUCE HAIL LARGER THAN
THREE FOURTHS OF AN INCH IN DIAMETER.

THERE IS A SOMEWHAT HIGHER RISK OF SEVERE STORMS IN SOUTHEAST
OKLAHOMA THIS AFTERNOON INTO THIS EVENING... MAINLY EAST OF ATOKA
AND DURANT.

CMS

Severe Thunderstorm Warnings in Oklahoma, 2002Every severe thunderstorm warning in 2002

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.