Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 531, NWS Norman, OK

July 5, 2004Alfalfa County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jul 5, 2004, 10:41 PM CDT for Alfalfa County, Oklahoma. It was in force for 64 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: Jul 5, 2004, 10:41 PM CDT (03:41 UTC)
Expired: Jul 5, 2004, 11:45 PM CDT
In force: 64 min
Issued by: NWS Norman, OK
Area: Counties, with a storm outline in the text

County Alfalfa County, OK

The radar

The Vance AFB radar (KVNX), 18 km from the middle of the area, began a volume at 03:43 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
Jul 5, 10:00 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Lamont, OK (KLMN), launched 00:00Z, 3.7 hours before the alert went out and 76 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: 2262 J/kg
Mixed-layer CIN: -34 J/kg
Mixed-layer LCL: 2094 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 238 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 10.5

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 Jul 5, 9:50 PM CDT, 51 minutes earlier.

Area forecast discussion, Jul 5, 9:50 PM CDT, 51 minutes before

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Hazardous weather outlook, Jul 5, 9:40 PM CDT, 1 hour 1 minute before

HAZARDOUS WEATHER OUTLOOK...UPDATED...
NATIONAL WEATHER SERVICE NORMAN OK
940 PM CDT MON JUL 5 2004

OKZ004>048-050>052-TXZ083>090-061200-

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

.DAY ONE...TONIGHT...

THUNDERSTORM OUTLOOK...
THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS TONIGHT.

LOCATION...
THE MODERATE RISK AREA IS NORTH OF A LINE EXTENDING FROM BUFFALO...
TO FAIRVIEW...TO STILLWATER. A SLIGHT RISK EXISTS SOUTH OF THIS
MODERATE RISK AREA...AND NORTH OF A LINE EXTENDING FROM HOLLIS...TO
NORMAN...TO SEMINOLE.

TIMING...
ALTHOUGH SEVERE WEATHER WILL CONTINUE OVER EXTREME NORTH CENTRAL
OKLAHOMA THROUGH THE LATE EVENING HOURS WITH AN ISOLATED
THUNDERSTORM...THE MOST LIKELY TIME FOR ANY WIDESPREAD SEVERE
THUNDERSTORMS WILL BE AFTER 1 AM...AND MAINLY CONFINED TO THE
MODERATE RISK AREA.

RECOMMENDED ACTIONS...
STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL ACROSS THE
RISK AREAS SHOULD BE PREPARED FOR SEVERE WEATHER OPERATIONS THROUGH
TONIGHT.

DISCUSSION...
A SMALL AREA OF SEVERE THUNDERSTORMS WILL CONTINUE ACROSS NORTH
CENTRAL OKLAHOMA THROUGH THE LATE EVENING HOURS...NORTH OF ENID
TOWARD THE CHEROKEE...MEDFORD...AND WAKITA AREAS. LARGE HAIL AND
FLOODING RAINFALL WILL BE THE PRIMARY CONCERNS WITH THIS ACTIVITY.

MORE WIDESPREAD THUNDERSTORMS WILL MOVE INTO NORTHERN PORTIONS OF
OKLAHOMA FROM WESTERN AND CENTRAL KANSAS AFTER MIDNIGHT...IN THE
FORM OF AN INTENSE SQUALL LINE. BECAUSE THIS ACTIVITY IS EXPECTED TO
BE SO WIDESPREAD...AND THE POTENTIAL EXISTS FOR SIGNIFICANT
STRAIGHT-LINE WINDS...THE MODERATE RISK HAS BEEN POSTED. WIND GUSTS
OF 70 MPH OR HIGHER WILL BE POSSIBLE WITH THE MOST SIGNIFICANT
SEGMENTS OF THE ANTICIPATED SQUALL LINE...PRIMARILY IN THE MODERATE
RISK AREA. LARGE HAIL WILL ALSO BE POSSIBLE. THIS SQUALL LINE...IN
CONJUNCTION WITH A STRONG ATMOSPHERIC DISTURBANCE MOVING THROUGH THE
CENTRAL PLAINS...WILL ALLOW A COLD FRONT TO MOVE INTO THE REGION
TUESDAY MORNING. THIS FRONT WILL BE ANOTHER FOCUS FOR SEVERE
THUNDERSTORM DEVELOPMENT INTO EARLY WEDNESDAY.

PROBABILITY TABLE...
VALID THROUGH 700 AM CDT TUESDAY JUL 6.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA...100 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...80 PERCENT.

OTHER HAZARDOUS WEATHER...
NONE.

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

THUNDERSTORM OUTLOOK...
ALONG WITH LINGERING THUNDERSTORMS WITH TONIGHTS COMPLEX...
ADDITIONAL THUNDERSTORMS WILL BE IN THE FORECAST DURING THE DAY
TUESDAY INTO WEDNESDAY...AS THE COLD FRONT MOVES THROUGH THE AREA.
SOME OF THESE STORMS MAY BE SEVERE.

OTHER HAZARDOUS WEATHER...
NONE.

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

11

In the hours before

Local storm report, Jul 5, 8:31 PM CDT, 2 hours 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
831 PM CDT MON JUL 05 2004

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

0828 PM     HAIL             8 WSW POND CREEK        36.62N 97.93W
07/05/2004  2.00 INCH        GRANT              OK   EMERGENCY MNGR

&&

FM/DEW

Local storm report, Jul 5, 8:34 PM CDT, 2 hours 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
834 PM CDT MON JUL 05 2004

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

0828 PM     HAIL             4 ENE HILLSDALE         36.59N 97.93W
07/05/2004  2.00 INCH        GARFIELD           OK   EMERGENCY MNGR

&&

FM/DEW

Special weather statement, Jul 5, 9:33 PM CDT, 1 hour 8 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
933 PM CDT MON JUL 5 2004

OKZ006-060245-
ALFALFA OK-
933 PM CDT MON JUL 5 2004

...SIGNIFICANT WEATHER ADVISORY...

THIS SIGNIFICANT WEATHER ADVISORY IS FOR ALFALFA COUNTY.

A STRONG THUNDERSTORM WAS LOCATED 10 MILES NORTH OF GREAT SALT PLAINS
LAKE AT 933 PM CDT...MOVING NORTH AT 5 MPH.

STORM INTENSITY IS INCREASING AND SEVERE WEATHER MAY DEVELOP RAPIDLY.

CJS

Local storm report, Jul 5, 9:48 PM CDT, 53 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
948 PM CDT MON JUL 05 2004

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

0852 PM     HAIL             3 E HILLSDALE           36.56N 97.94W
07/05/2004  2.50 INCH        GARFIELD           OK   EMERGENCY MNGR

&&

DEW

Special weather statement, Jul 5, 9:54 PM CDT, 47 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
954 PM CDT MON JUL 5 2004

OKZ005-060315-
WOODS OK-
954 PM CDT MON JUL 5 2004

...SIGNIFICANT WEATHER ADVISORY...

THIS SIGNIFICANT WEATHER ADVISORY IS FOR WOODS COUNTY.

A STRONG THUNDERSTORM WAS LOCATED OVER ALVA AT 954 PM CDT...MOVING
EAST AT 10 MPH.

STORM INTENSITY IS INCREASING AND SEVERE WEATHER MAY DEVELOP RAPIDLY.

PEOPLE IN WOODS COUNTY...INCLUDING THE CITY OF ALVA...SHOULD MONITOR
THE WEATHER SITUATION CLOSELY. LISTEN FOR WARNINGS AND REMAIN ALERT
FOR THREATENING WEATHER CONDITIONS.

CJS

Local storm report, Jul 5, 10:14 PM CDT, 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1014 PM CDT MON JUL 05 2004

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

1000 PM     HAIL             ALVA                    36.80N 98.67W
07/05/2004  1.00 INCH        WOODS              OK   LAW ENFORCEMENT

            SOUTH SIDE OF ALVA

1000 PM     HAIL             ALVA                    36.80N 98.67W
07/05/2004  1.25 INCH        WOODS              OK   LAW ENFORCEMENT

            NORTH SIDE OF ALVA

&&

DEW

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 5, 7:11 PM CDT	Flash Flood Warning	OUN	Garfield, Logan, Noble	4 hr
Jul 5, 7:56 PM CDT	Severe Thunderstorm Warning	OUN	Garfield	64 min
Jul 5, 8:25 PM CDT	Severe Thunderstorm Warning	OUN	Grant	65 min
Jul 5, 8:56 PM CDT	Severe Thunderstorm Warning	OUN	Garfield	49 min
Jul 5, 9:29 PM CDT	Severe Thunderstorm Warning	OUN	Grant	61 min
Jul 5, 9:41 PM CDT	Severe Thunderstorm Warning	OUN	Garfield	49 min
Jul 5, 9:51 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa	54 min
Jul 5, 9:56 PM CDT	Severe Thunderstorm Warning	OUN	Woods	64 min
Jul 5, 10:56 PM CDT	Severe Thunderstorm Warning	OUN	Woods	64 min
Jul 5, 11:08 PM CDT	Flash Flood Warning	OUN	Alfalfa	3 hr
Jul 5, 11:27 PM CDT	Flash Flood Warning	OUN	Woods	3 hr
Jul 5, 11:42 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa	63 min
Jul 5, 11:59 PM CDT	Severe Thunderstorm Warning	OUN	Woods	61 min
Jul 6, 12:14 AM CDT	Severe Thunderstorm Warning	OUN	Harper	46 min
Jul 6, 12:53 AM CDT	Severe Thunderstorm Warning	OUN	Ellis, Woods, Woodward	52 min
Jul 6, 12:56 AM CDT	Severe Thunderstorm Warning	OUN	Harper	34 min
Jul 6, 1:24 AM CDT	Severe Thunderstorm Warning	OUN	Harper	36 min
Jul 6, 1:41 AM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Dewey, Ellis, Major, Woods, Woodward	64 min
Jul 6, 1:46 AM CDT	Flash Flood Warning	OUN	Alfalfa, Woods	3 hr
Jul 6, 2:24 AM CDT	Severe Thunderstorm Warning	OUN	Garfield, Grant	81 min
Jul 6, 2:36 AM CDT	Severe Thunderstorm Warning	OUN	Blaine, Custer, Dewey, Kingfisher, Major	39 min
Jul 6, 3:15 AM CDT	Severe Thunderstorm Warning	OUN	Blaine, Kingfisher, Logan	45 min
Jul 6, 3:25 AM CDT	Severe Thunderstorm Warning	OUN	Canadian	50 min
Jul 6, 3:28 AM CDT	Severe Thunderstorm Warning	OUN	Kay, Noble	47 min
Jul 6, 3:57 AM CDT	Severe Thunderstorm Warning	OUN	Canadian, Kingfisher, Logan, Oklahoma, Payne	48 min
Jul 6, 5:24 AM CDT	Severe Thunderstorm Warning	OUN	Comanche	36 min
Jul 6, 6:06 AM CDT	Severe Thunderstorm Warning	OUN	Grady, Stephens	24 min
Jul 6, 6:23 AM CDT	Severe Thunderstorm Warning	OUN	Garvin	52 min
Jul 6, 7:44 AM CDT	Severe Thunderstorm Warning	OUN	Archer, Clay, Wichita	46 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2004 Every severe thunderstorm warning in 2004

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.