Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 472, NWS Norman, OK

June 30, 2004Beckham County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jun 30, 2004, 8:45 PM CDT for Beckham County, Oklahoma. It was in force for 45 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: Jun 30, 2004, 8:45 PM CDT (01:45 UTC)
Expired: Jun 30, 2004, 9:30 PM CDT
In force: 45 min
Issued by: NWS Norman, OK
Area: Counties, with a storm outline in the text

County Beckham County, OK

The radar

The Altus AFB radar (KFDR), 120 km from the middle of the area, began a volume at 01:49 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 nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 1.8 hours before the alert went out and 183 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: 987 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 1953 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 107 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 Jun 30, 2:44 PM CDT, 6 hours 1 minute earlier.

Area forecast discussion, Jun 30, 2:44 PM CDT, 6 hours 1 minute before

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Hazardous weather outlook, Jun 30, 7:09 PM CDT, 1 hour 36 minutes before

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In the hours before

Special weather statement, Jun 30, 6:36 PM CDT, 2 hours 9 minutes before

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Special weather statement, Jun 30, 7:03 PM CDT, 1 hour 42 minutes before

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Special weather statement, Jun 30, 7:38 PM CDT, 1 hour 7 minutes before

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Special weather statement, Jun 30, 8:02 PM CDT, 43 minutes before

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Special weather statement, Jun 30, 8:15 PM CDT, 30 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
815 PM CDT WED JUN 30 2004

OKZ009-010-014-015-021-010130-
BECKHAM OK-DEWEY OK-ELLIS OK-ROGER MILLS OK-WOODWARD OK-
815 PM CDT WED JUN 30 2004

...SIGNIFICANT WEATHER ADVISORY...

THIS SIGNIFICANT WEATHER ADVISORY IS FOR BECKHAM...DEWEY...ELLIS...
ROGER MILLS AND WOODWARD COUNTIES.

A LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM 11 MILES NORTH OF
MOORELAND...TO JUST WEST OF VICI...TO 4 MILES NORTH OF ERICK AT 815
PM...MOVING EAST AT 10 MPH.

SEVERE WEATHER IS NOT EXPECTED AND NO WARNINGS ARE ANTICIPATED AT
THIS TIME. HOWEVER...HAIL TO THE SIZE OF DIMES AND WIND GUSTS OF 40
TO 50 MPH WILL BE POSSIBLE. THE STRONGEST STORM WAS LOCATED JUST
NORTH OF ERICK IN BECKHAM COUNTY...AND THIS STORM WILL AFFECT SAYRE
IN THE NEXT 30 MINUTES TO 1 HOUR.

PEOPLE IN BECKHAM...DEWEY...ELLIS...ROGER MILLS AND WOODWARD
COUNTIES...INCLUDING THE CITY OF WOODWARD...SHOULD MONITOR THE
WEATHER SITUATION CLOSELY. LISTEN FOR WARNINGS AND REMAIN ALERT FOR
THREATENING WEATHER CONDITIONS.

11

Special weather statement, Jun 30, 8:38 PM CDT, 7 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
838 PM CDT WED JUN 30 2004

OKZ010-014>016-021-010200-
BECKHAM OK-CUSTER OK-DEWEY OK-ROGER MILLS OK-WOODWARD OK-
838 PM CDT WED JUN 30 2004

...SIGNIFICANT WEATHER ADVISORY...

THIS SIGNIFICANT WEATHER ADVISORY IS FOR BECKHAM...CUSTER...DEWEY...
ROGER MILLS AND WOODWARD COUNTIES.

A LINE OF STRONG THUNDERSTORMS EXTENDED FROM 4 MILES SOUTH OF
MOORELAND...TO NEAR LEEDEY...TO 5 MILES EAST OF ERICK AT 838 PM
...MOVING EAST-SOUTHEAST AT 15 MPH.

ALONG WITH TORRENTIAL RAINFALL AND FREQUENT LIGHTNING...SMALL HAIL
AND WIND GUSTS OF 40 TO 50 MPH WILL BE POSSIBLE. THE STRONGEST STORM
IN THIS LINE WAS LOCATED JUST EAST OF ERICK.

PEOPLE IN BECKHAM...CUSTER...DEWEY...ROGER MILLS AND WOODWARD
COUNTIES...INCLUDING THE CITY OF ELK CITY...SHOULD MONITOR THE
WEATHER SITUATION CLOSELY. LISTEN FOR WARNINGS AND REMAIN ALERT FOR
THREATENING WEATHER CONDITIONS.

11

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 9:29 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Greer	46 min
Jun 30, 10:12 PM CDT	Severe Thunderstorm Warning	OUN	Beckham	33 min
Jun 30, 10:31 PM CDT	Severe Thunderstorm Warning	OUN	Roger Mills	59 min
Jun 30, 10:35 PM CDT	Severe Thunderstorm Warning	OUN	Custer	55 min
Jun 30, 10:41 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Kingfisher	49 min
Jun 30, 10:45 PM CDT	Severe Thunderstorm Warning	OUN	Beckham	30 min
Jun 30, 11:31 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Caddo, Canadian, Custer, Kingfisher, Washita	44 min
Jun 30, 11:32 PM CDT	Flash Flood Warning	OUN	Custer, Roger Mills	3 hr
Jul 1, 12:12 AM CDT	Severe Thunderstorm Warning	OUN	Kiowa	63 min
Jul 1, 12:30 AM CDT	Severe Thunderstorm Warning	OUN	Beckham	60 min
Jul 1, 1:29 AM CDT	Severe Thunderstorm Warning	OUN	Beckham, Greer	61 min
Jul 1, 5:10 AM CDT	Flash Flood Warning	OUN	Custer, Washita	4 hr
Jul 1, 6:59 AM CDT	Flash Flood Warning	OUN	Comanche	2 hr
Jul 1, 9:09 AM CDT	Severe Thunderstorm Warning	OUN	Caddo	51 min
Jul 1, 9:53 AM CDT	Flash Flood Warning	OUN	Caddo	3 hr

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.