Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 19, NWS Norman, OK

March 11, 2007Jefferson County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Mar 11, 2007, 4:53 PM CDT for Jefferson County, Oklahoma. It was in force for 37 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 11, 2007, 4:53 PM CDT (21:53 UTC)
Expired: Mar 11, 2007, 5:30 PM CDT
In force: 37 min
Issued by: NWS Norman, OK
Area: Counties, with a storm outline in the text

County Jefferson County, OK

The radar

The Altus AFB radar (KFDR), 109 km from the middle of the area, began a volume at 21:54 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.

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 11, 1:55 PM CDT, 2 hours 58 minutes earlier.

Area forecast discussion, Mar 11, 1:55 PM CDT, 2 hours 58 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
155 PM CDT SUN MAR 11 2007

.DISCUSSION...
THE UPPER LOW OVER NEW MEXICO HAS CUT OFF FROM THE MAIN FLOW AND
WILL REMAIN TO OUR WEST THROUGH AT LEAST TUESDAY. ALTHOUGH THE LOW
WILL STEADILY WEAKEN WITH TIME...DEEP MOISTURE WILL MAKE IT
CONDUCIVE FOR PERIODS OF RAIN AND THUNDERSTORMS TO ACCOMPANY SMALL
DISTURBANCES THAT EMANATE FROM IT.

WILL FOLLOW A MODEL CONSENSUS THROUGH MIDWEEK REGARDING ITS
TRACK...WHICH HAS THE LOW REACHING ABOUT ABILENE/MIDLAND BY EARLY
MONDAY...THEN DRIFTING NORTHWARD ALONG THE TEXAS/NEW MEXICO
BORDER...BEFORE FINALLY RECEIVING A SIGNIFICANT PUSH EASTWARD ON
WEDNESDAY AS THE MID LATITUDE WESTERLY FLOW STRENGTHENS TO ITS
NORTH. AS THE LOW TRACK ACROSS TEXAS...THE AMOUNT AND DEPTH OF
MOISTURE SHOULD DECREASE WITH GRADUALLY LOWER CHANCES OF RAIN AND
LOWER RAINFALL TOTALS.

FOR TONIGHT...THE FOCUS WILL BE ACROSS RED RIVER VALLEY. THE FRONT
NEAR THE RED RIVER HAS RETREATED NORTHWARD WITH TEMPERATURES
CLIMBING CLOSE TO 80 DEGREES NEAR GRAHAM TEXAS. NEAR SURFACE
MOISTURE IS NOT IMPRESSIVE HOWEVER WITH DEWPOINTS ONLY IN THE
LOW/MID 50S. STORMS ARE QUICKLY FORMING HOWEVER...WITHIN THE HIGHER
THETA E AIR ABOVE THE SURFACE FRONT WEST OF SEYMOUR AND
THROCKMORTON...AND WE THINK THERE IS A GOOD POSSIBILITY OF SEEING
THESE STORMS EXPAND/INTENSIFY IN THE WEAKLY UNSTABLE ENVIRONMENT
FROM NEAR WICHITA FALLS/ARCHER CITY/HENRIETTA...EASTWARD ALONG BOTH
SIDES OF THE FRONTAL BOUNDARY...INCLUDING THE RED RIVER VALLEY
THROUGH LATE AFTERNOON/EVENING. INSTABILITY NOT VERY HIGH WITH
MLCAPES OF 250-1000 J/KJ BUT ENOUGH TO SUPPORT ISOLATED TO SCATTERED
SEVERE STORMS GIVEN DEEP LAYER SHEAR OF ABOUT 40 TO 50 KTS. ISOLATED
HAIL/WIND SEEM MOST LIKELY...BUT TEMPERATURE/DEWPOINT SPREADS ARE
NEARING 30 DEGREES NEAR OUR TEXAS COUNTIES...AND THERE IS AMPLE MID
LEVEL MOISTURE TO SUPPORT WET MICROBURSTS. WILL HAVE TO WATCH
CAREFULLY...BUT WOULD NOT BE TOO SURPRISED TO SEE AN ORGANIZED
COMPLEX EVOLVE.

RAIN MAY ALSO BE ABUNDANT OVERNIGHT WITH THE HIGHEST QPF EXPECTED ON
THE NORTH SIDE OF THE FRONT...WITH THE SOUTHWEST QUADRANT OF THE
FORECAST AREA CLOSEST TO THE APPROACHING UPPER LOW AND WITHIN THE
HIGHER SOURCE OF MOISTURE. SOME AREAS HAVE ALREADY 1 TO 2 INCHES OF
RAIN BUT BELIEVE THE AREA CAN WITHSTAND MUCH MORE AS RAIN IS NEEDED
AND SHORT TERM RAINFALL RATES HAVE GENERALLY BEEN LESS THAN ONE HALF
PER HOUR.

ONCE THE UPPER LOW MOVES EAST OF THE AREA BY MIDWEEK...A GRADUAL
WARMING TREND IS EXPECTED BUT WILL SLOW THE WARMUP JUST A TAD FROM
PREVIOUS PACKAGES ESPECIALLY FOR THE SOUTHERN TIER WHERE A WET
GROUND AND GROWING VEGETATION ARE EXPECTED.

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK  54  66  55  70 /  90  50  30  40
HOBART OK         51  64  54  69 /  80  60  40  40
WICHITA FALLS TX  55  66  57  71 / 100  60  40  40
GAGE OK           46  67  52  73 /  40  30  30  20
PONCA CITY OK     48  68  52  70 /  60  20  20  20
DURANT OK         57  65  59  70 / 100  60  40  50

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...NONE.
TX...NONE.

JAMES

Hazardous weather outlook, Mar 11, 11:45 AM CDT, 5 hours 8 minutes before

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In the hours before

Local storm report, Mar 11, 2:51 PM CDT, 2 hours 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
251 PM CDT SUN MAR 11 2007

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

0145 AM     TSTM WND GST     3 W LOCKETT             34.08N 99.42W
03/11/2007  E80.00 MPH       WILBARGER          TX   PUBLIC

&&

JLP

Special weather statement, Mar 11, 3:26 PM CDT, 1 hour 27 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
326 PM CDT SUN MAR 11 2007

OKZ037-044-112045-
COTTON OK-TILLMAN OK-
326 PM CDT SUN MAR 11 2007

...SIGNIFICANT WEATHER ADVISORY...

THIS SIGNIFICANT WEATHER ADVISORY IS FOR COTTON AND TILLMAN COUNTIES.

A STRONG THUNDERSTORM WAS LOCATED 4 MILES NORTH OF DEVOL AT 326 PM
CDT...MOVING NORTH AT 20 MPH.

SMALL HAIL AND WINDS AROUND 50 MPH ARE POSSIBLE.

PEOPLE IN COTTON AND TILLMAN COUNTIES SHOULD MONITOR THE WEATHER
SITUATION CLOSELY. LISTEN FOR WARNINGS AND REMAIN ALERT FOR
THREATENING WEATHER CONDITIONS.

..SPEG.

Special weather statement, Mar 11, 4:33 PM CDT, 20 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
433 PM CDT SUN MAR 11 2007

OKZ044-112145-
COTTON OK-
433 PM CDT SUN MAR 11 2007

...SIGNIFICANT WEATHER ADVISORY...

THIS SIGNIFICANT WEATHER ADVISORY IS FOR COTTON COUNTY.

A STRONG THUNDERSTORM WAS LOCATED 9 MILES SOUTH OF TEMPLE AT 433 PM
CDT...MOVING NORTH AT 15 MPH. PEA TO DIME SIZE HAIL IS POSSIBLE WITH
THIS STORM AND FURTHER STRENGTHENING IS POSSIBLE.

PEOPLE IN COTTON COUNTY SHOULD MONITOR THE WEATHER SITUATION CLOSELY.
LISTEN FOR WARNINGS AND REMAIN ALERT FOR THREATENING WEATHER
CONDITIONS.

JAMES

Special weather statement, Mar 11, 4:45 PM CDT, 8 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
445 PM CDT SUN MAR 11 2007

OKZ044-045-112200-
COTTON OK-JEFFERSON OK-
445 PM CDT SUN MAR 11 2007

...SIGNIFICANT WEATHER ADVISORY...

THIS SIGNIFICANT WEATHER ADVISORY IS FOR COTTON AND JEFFERSON
COUNTIES.

AT 445 PM...STRONG THUNDERSTORMS WERE FORMING ALONG THE
COTTON...JEFFERSON COUNTY LINE...MOVING NORTH AT 20 MPH. AREAS
BETWEEN TEMPLE AND HASTINGS MAY BE AFFECTED BY THIS STORM. DIME SIZE
HAIL IS LIKELY...AND FURTHER STRENGTHENING IS POSSIBLE.

PEOPLE IN COTTON AND JEFFERSON COUNTIES SHOULD MONITOR THE WEATHER
SITUATION CLOSELY. LISTEN FOR WARNINGS AND REMAIN ALERT FOR
THREATENING WEATHER CONDITIONS.

JAMES

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 10, 7:58 PM CST	Severe Thunderstorm Warning	OUN	Ellis	62 min
Mar 11, 1:11 AM CST	Severe Thunderstorm Warning	OUN	Jackson	49 min
Mar 11, 1:53 AM CST	Severe Thunderstorm Warning	OUN	Jackson, Kiowa, Tillman	52 min
Mar 11, 5:22 PM CDT	Severe Thunderstorm Warning	OUN	Stephens	38 min
Mar 11, 6:01 PM CDT	Severe Thunderstorm Warning	OUN	Stephens	29 min
Mar 11, 6:29 PM CDT	Severe Thunderstorm Warning	OUN	Stephens	28 min
Mar 11, 1:33 AM CST	Severe Thunderstorm Warning	OUN	Wilbarger	42 min
Mar 11, 3:15 AM CDT	Severe Thunderstorm Warning	OUN	Wilbarger	45 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2007 Every severe thunderstorm warning in 2007

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.