Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 77, NWS Norman, OK

March 17, 2008Caddo County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Mar 17, 2008, 3:24 PM CDT for Caddo County, Oklahoma. It was in force for 51 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Mar 17, 2008, 3:24 PM CDT (20:24 UTC)
Expired: Mar 17, 2008, 4:15 PM CDT
In force: 51 min
Issued by: NWS Norman, OK
Area: Storm-based polygon

County Caddo County, OK

The radar

The Norman radar (KTLX), 101 km from the middle of the area, began a volume at 20:26 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Mar 17, 1:30 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

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.

NWS Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 17, 2:43 PM CDT, 41 minutes earlier.

Area forecast discussion, Mar 17, 2:43 PM CDT, 41 minutes before

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Hazardous weather outlook, Mar 17, 2:15 PM CDT, 1 hour 9 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
215 PM CDT MON MAR 17 2008

OKZ004>048-050>052-TXZ083>090-181200-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-NOBLE-
ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-BECKHAM-
WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-CLEVELAND-
POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-TILLMAN-
COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-FOARD-WILBARGER-
WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
215 PM CDT MON MAR 17 2008

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT...

THUNDERSTORM OUTLOOK...
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THROUGH TONIGHT
ACROSS MUCH OF OKLAHOMA AND WESTERN NORTH TEXAS.

LOCATION...
THE SLIGHT RISK AREA IS EAST OF A LINE FROM HOLLIS... TO ELK CITY...
TO FAIRVIEW... TO MEDFORD.

TIMING...
THE MOST LIKELY TIME FOR SEVERE THUNDERSTORMS WILL BE FROM NOW
THROUGH 1 AM.

IMPACTS...
THE PRIMARY IMPACTS WILL BE HAIL TO NEAR THE SIZE OF GOLFBALLS AND
DAMAGING WINDS TO NEAR 70 MPH... ESPECIALLY OVER WESTERN NORTH TEXAS
INTO SOUTH CENTRAL OKLAHOMA. ISOLATED TORNADOES WILL ALSO BE
POSSIBLE. LOCALLY HEAVY RAINFALL... AND FLASH FLOODING... WILL BE
POSSIBLE TONIGHT ACROSS PARTS OF SOUTH CENTRAL AND EASTERN OKLAHOMA.

RECOMMENDED ACTIONS...
STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL IN THE RISK
AREA SHOULD REMAIN READY FOR SEVERE WEATHER OPERATIONS THROUGH THIS
EVENING. IN SOUTHEASTERN OKLAHOMA... REMAIN PREPARED FOR POSSIBLE
HEAVY RAIN AND FLOODING OVERNIGHT.

DISCUSSION...
A LARGE UPPER LEVEL STORM SYSTEM CENTERED OVER NORTHERN MEXICO WILL
MOVE SLOWLY NORTHEAST THROUGH TONIGHT. THUNDERSTORM COVERAGE WILL
CONTINUE TO INCREASE THIS AFTERNOON ALONG A COLD FRONT... FROM NORTH
CENTRAL INTO SOUTHWESTERN OKLAHOMA AND SOUTHWARD INTO CENTRAL TEXAS.
THESE THUNDERSTORMS WILL MOVE EAST AND NORTHEAST INTO CENTRAL AND
SOUTH CENTRAL OKLAHOMA... AND ACROSS WESTERN NORTH TEXAS... LATE
THIS AFTERNOON THROUGH THIS EVENING. MODERATELY UNSTABLE CONDITIONS
EXIST AHEAD OF THE COLD FRONT... AND VERTICAL WIND SHEAR WILL REMAIN
STRONG ENOUGH THAT ANY STORMS THROUGH THIS EVENING COULD QUICKLY
BECOME SEVERE. A FEW SUPERCELLS WILL BE POSSIBLE ACROSS NORTHERN
TEXAS AND SOUTHERN OKLAHOMA THIS EVENING... WITH AN ATTENDANT
POTENTIAL FOR VERY LARGE HAIL... DAMAGING WINDS... AND POSSIBLY A
FEW TORNADOES.

DAMAGING WINDS AND LARGE HAIL WILL REMAIN POSSIBLE LATE TONIGHT OVER
SOUTHEASTERN OKLAHOMA. THE POTENTIAL FOR HEAVY TO EXCESSIVE
RAINFALL AND FLOODING WILL INCREASE OVER SOUTH CENTRAL AND EASTERN
OKLAHOMA OVERNIGHT.

PROBABILITY TABLE...
VALID THROUGH 700 AM CDT TUESDAY MAR 18.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA...100 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...60 PERCENT.

OTHER HAZARDOUS WEATHER...
SEE THE FLASH FLOOD WATCH FOR ADDITIONAL INFORMATION REGARDING THE
FLOODING POTENTIAL TONIGHT IN SOUTHEASTERN AND EASTERN OKLAHOMA.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...

THUNDERSTORM OUTLOOK...
ALTHOUGH THUNDERSTORMS WILL BE CONTINUING OVER MAINLY THE SOUTHEAST
HALF OF OKLAHOMA ON TUESDAY... THE THREAT OF SEVERE WEATHER WILL
HAVE DIMINISHED. LATER IN THE WEEK... ANOTHER STORM SYSTEM
APPROACHING THE SOUTHERN PLAINS WILL BRING A CHANCE OF MORE
THUNDERSTORMS NEXT WEEKEND.

OTHER HAZARDOUS WEATHER...
LOCALLY HEAVY RAINFALL WILL STILL BE POSSIBLE ACROSS ACROSS PARTS OF
SOUTHEAST OKLAHOMA EARLY TUESDAY. MEANWHILE... RUNOFF FROM THE HEAVY
RAINS COULD ALSO LEAD TO FLOODING ON MAINSTEM RIVERS IN SOUTHEAST
OKLAHOMA.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT 7 AM
TUESDAY.

24

In the hours before

Local storm report, Mar 17, 2:00 PM CDT, 1 hour 24 minutes before

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Local storm report, Mar 17, 2:09 PM CDT, 1 hour 15 minutes before

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Local storm report, Mar 17, 2:33 PM CDT, 51 minutes before

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Special weather statement, Mar 17, 2:43 PM CDT, 41 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
243 PM CDT MON MAR 17 2008

OKZ036-172000-
JACKSON OK-
243 PM CDT MON MAR 17 2008

...SIGNIFICANT WEATHER ADVISORY...

THIS SIGNIFICANT WEATHER ADVISORY IS FOR JACKSON COUNTY.

A STRONG THUNDERSTORM WAS LOCATED OVER HUMPHREYS AT 243 PM CDT...
MOVING NORTHEAST AT 50 MPH.

STORM INTENSITY IS INCREASING AND SEVERE WEATHER MAY DEVELOP RAPIDLY.

Local storm report, Mar 17, 2:44 PM CDT, 40 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
244 PM CDT MON MAR 17 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0230 PM     HAIL             2 E WARREN              34.78N 99.18W
03/17/2008  E0.88 INCH       JACKSON            OK   AMATEUR RADIO

            TIME ESTIMATED

0240 PM     HAIL             HOBART                  35.03N 99.09W
03/17/2008  E0.75 INCH       KIOWA              OK   EMERGENCY MNGR

&&

DW

Special weather statement, Mar 17, 3:01 PM CDT, 23 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
301 PM CDT MON MAR 17 2008

OKZ017-172015-
BLAINE OK-
301 PM CDT MON MAR 17 2008

...SIGNIFICANT WEATHER ADVISORY...

THIS SIGNIFICANT WEATHER ADVISORY IS FOR BLAINE COUNTY.

A STRONG THUNDERSTORM WAS LOCATED 12 MILES SOUTHWEST OF GREENFIELD AT
301 PM CDT...MOVING NORTHEAST AT 40 MPH.

SMALL HAIL AND WINDS AROUND 45 MPH ARE POSSIBLE.

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 17, 3:40 AM CDT	Severe Thunderstorm Warning	OUN	Ellis, Woodward	35 min
Mar 17, 5:20 AM CDT	Severe Thunderstorm Warning	OUN	Blaine, Custer, Dewey, Major	25 min
Mar 17, 5:45 AM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Blaine, Dewey, Major, Woods	27 min
Mar 17, 1:15 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Harmon, Jackson	45 min
Mar 17, 1:39 PM CDT	Severe Thunderstorm Warning	OUN	Kiowa, Washita	51 min
Mar 17, 1:55 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Jackson, Kiowa	50 min
Mar 17, 2:40 PM CDT	Severe Thunderstorm Warning	OUN	Kiowa, Washita	50 min
Mar 17, 4:04 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Canadian	41 min
Mar 17, 6:02 AM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor, Wichita, Wilbarger	28 min
Mar 17, 6:34 PM CDT	Severe Thunderstorm Warning	OUN	Baylor	41 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2008 Every severe thunderstorm warning in 2008

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.