Alert archive / Texas / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 79, NWS Norman, OK

March 17, 2008Baylor County, Texas

NWS Norman, OK issued this severe thunderstorm warning at Mar 17, 2008, 6:34 PM CDT for Baylor County, Texas. It was in force for 41 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, 6:34 PM CDT (23:34 UTC)
Expired: Mar 17, 2008, 7:15 PM CDT
In force: 41 min
Issued by: NWS Norman, OK
Area: Storm-based polygon

County Baylor County, TX

The radar

The Altus AFB radar (KFDR), 86 km from the middle of the area, began a volume at 23:33 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

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 11.6 hours before the alert went out and 199 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: 185 J/kg
Mixed-layer CIN: -428 J/kg
Mixed-layer LCL: 651 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 338 m²/s²
0-3 km storm-relative helicity: 576 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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, 5:38 PM CDT, 56 minutes earlier.

Area forecast discussion, Mar 17, 5:38 PM CDT, 56 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
538 PM CDT MON MAR 17 2008

.DISCUSSION...
QUICK UPDATE TO EXPAND FLASH FLOOD WATCH BACK TO THE NORTHWEST A
BIT. NAM/GFS SUPPORT AXIS OF HEAVY RAINFALL A LITTLE BIT FURTHER
BACK TO THE NW AND THIS SEEMS REASONABLE GIVEN EXPECTED LOCATTION
OF THE LOW LEVEL BOUNDARY OVERNIGHT. THUS UPDATE GRIDS TO REFLECT
THIS.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK  46  52  38  64 /  80  50  40   0
HOBART OK         39  53  36  66 /  50  30  30   0
WICHITA FALLS TX  49  52  39  68 /  80  50  60   0
GAGE OK           36  59  33  66 /  30  10   0   0
PONCA CITY OK     40  54  37  65 /  60  40  20   0
DURANT OK         55  58  43  65 / 100  90  90  20

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...FLASH FLOOD WATCH THROUGH TUESDAY EVENING FOR OKZ031-032-041>043-
     046>048-050>052.

TX...NONE.
&&

02/99

Hazardous weather outlook, Mar 17, 2:15 PM CDT, 4 hours 19 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, 2:33 PM CDT, 4 hours 1 minute before

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Special weather statement, Mar 17, 2:43 PM CDT, 3 hours 51 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, 3 hours 50 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, 3 hours 33 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.

Local storm report, Mar 17, 4:16 PM CDT, 2 hours 18 minutes before

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

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

0410 PM     HAIL             1 S HINTON              35.46N 98.36W
03/17/2008  E0.88 INCH       CADDO              OK   PARK/FOREST SRVC

            RED ROCK CANYON STATE PARK

&&

DW

Special weather statement, Mar 17, 4:33 PM CDT, 2 hours 1 minute before

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

OKZ023-038-172200-
CADDO OK-COMANCHE OK-
433 PM CDT MON MAR 17 2008

...SIGNIFICANT WEATHER ADVISORY...

THIS SIGNIFICANT WEATHER ADVISORY IS FOR CADDO AND COMANCHE COUNTIES.

A STRONG THUNDERSTORM WAS LOCATED NEAR THE WICHITA MOUNTAINS WILDLIFE
REFUGE AT 433 PM CDT...MOVING NORTHEAST AT 45 MPH.

SMALL HAIL AND WINDS AROUND 50 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, 3:24 PM CDT	Severe Thunderstorm Warning	OUN	Caddo	51 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

Nearby

Severe Thunderstorm Warnings in Texas, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.