Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2004
Severe Thunderstorm Warning 674, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Nov 23, 2004, 7:50 AM CST for Stephens County, Oklahoma. It was in force for 25 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
- Nov 23, 2004, 7:50 AM CST (13:50 UTC)
- Expired
- Nov 23, 2004, 8:15 AM CST
- In force
- 25 min
- Issued by
- NWS Norman, OK
- Area
- Counties, with a storm outline in the text
County Stephens County, OK
The radar
The Altus AFB radar (KFDR), 104 km from the middle of the area, began a volume at 13:52 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
Norman, OK (KOUN), launched 12:00Z, 1.8 hours before the alert went out and 91 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 465 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 72 m²/s²
- 0-3 km storm-relative helicity
- 153 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Nov 23, 5:03 AM CST, 2 hours 47 minutes earlier.
Area forecast discussion, Nov 23, 5:03 AM CST, 2 hours 47 minutes before
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>Hazardous weather outlook, Nov 23, 7:06 AM CST, 44 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
700 AM CST TUE NOV 23 2004
OKZ004>048-050>052-TXZ083>090-241300-
THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.
.DAY ONE...TODAY AND TONIGHT...
THUNDERSTORM OUTLOOK...
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TO THE SOUTH OF A
LINE FROM ELK CITY... TO OKLAHOMA CITY... TO STROUD.
DISCUSSION...
THUNDERSTORMS ARE ONGOING OVER PARTS OF SOUTHERN OKLAHOMA AND
WESTERN NORTH TEXAS EARLY THIS MORNING... AND WILL SPREAD NORTHEAST
DURING THE DAY WHILE INCREASING IN STRENGTH AND COVERAGE. VERY
STRONG FORCING FOR UPWARD MOTION COMBINED WITH STRONG WIND SHEAR AND
SUFFICIENT INSTABILITY IS LIKELY TO STILL SUPPORT THE POTENTIAL FOR
ELEVATED STRONG TO SEVERE THUNDERSTORMS OVER MUCH OF THE SOUTHERN
HALF OF OKLAHOMA AND PARTS OF WESTERN NORTH TEXAS WITH A THREAT OF
NICKEL TO HALF DOLLAR SIZE HAIL. A SURFACE LOW PRESSURE AREA IS
EXPECTED TO DEVELOP IN WEST TEXAS TODAY THEN MOVE TOWARD SOUTH
CENTRAL OKLAHOMA LATE THIS AFTERNOON AND INTO SOUTHEAST OKLAHOMA
THIS EVENING. THE SURFACE WARM ACROSS NORTH TEXAS THIS MORNING IS
EXPECTED TO LIFT NORTHWARD TO THE VICINITY OF THE RED RIVER BY
EVENING. THE CHANCES OF BOUNDARY LAYER OR SURFACE BASED SEVERE
STORMS WILL INCREASE IN THE VICNITY OF THE WARM FRONT WITH AN
INCREASING RISK OF WIND DAMAGE AND TORNADOES. AT THIS TIME IT
APPEARS THIS THREAT IS LIKELY TO BE LIMITED TO FAR SOUTHERN SECTIONS
OF SOUTH-CENTRAL AND SOUTHEAST OKLAHOMA.
PROBABILITY TABLE...
VALID THROUGH 700 AM CST WEDNESDAY NOV 24.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...100 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...25 PERCENT.
OTHER HAZARDOUS WEATHER...
HEAVY RAIN ASSOCIATED WITH THE THUNDERSTORMS TODAY AND TONIGHT COULD
RESULT IN FLOODING...PARTICULARLY OVER PARTS OF CENTRAL AND SOUTHERN
OKLAHOMA AS WELL AS WESTERN NORTH TEXAS. HEAVY RAIN THE PAST SEVERAL
DAYS HAS RESULTED IN SATURATED GROUND CONDITIONS. AS ADDITIONAL
RAIN...PERHAPS 1 TO 3 INCHES...FALLS IN THESE AREAS FLOODING MAY
RESULT. ALSO...RAIN IS EXPECTED TO MIX WITH AND CHANGE TO SNOW
BEGINNING EARLY THIS EVENING IN NORTHWEST OKLAHOMA...AND THEN OVER
MUCH OF THE NORTHWEST HALF OF THE STATE OVERNIGHT. SOME SNOW
ACCUMULATION IS LIKELY BEFORE THE PRECIPITATION ENDS WEDNESDAY
MORNING.
FINALLY...AREAS OF FOG AND DRIZZLE MAY LOCALLY REDUCE VISIBILITY TO
A MILE OR LESS THIS MORNING ACROSS MUCH OF THE AREA.
.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY...
THUNDERSTORM OUTLOOK...
NONE.
OTHER HAZARDOUS WEATHER...
TEMPERATURES WILL DROP TO FREEZING OR BELOW OVER MUCH OF OKLAHOMA
AND WESTERN NORTH TEXAS WEDNESDAY NIGHT. A HARD FREEZE IS LIKELY
OVER ABOUT THE NORTHWEST HALF OF OKLAHOMA.
THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT NOON
TODAY.
2In the hours before
Special weather statement, Nov 23, 7:21 AM CST, 29 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORMAN OK 721 AM CST TUE NOV 23 2004 OKZ045-231330- JEFFERSON OK- 721 AM CST TUE NOV 23 2004 ...SIGNIFICANT WEATHER ADVISORY... THIS SIGNIFICANT WEATHER ADVISORY IS FOR JEFFERSON COUNTY. A STRONG THUNDERSTORM WAS LOCATED 3 MILES EAST OF WAURIKA AT 721 AM CST...MOVING NORTHEAST AT 25 MPH. HEAVY RAIN IS LIKELY AND SMALL HAIL IS POSSIBLE. 24
Special weather statement, Nov 23, 7:41 AM CST, 9 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORMAN OK 741 AM CST TUE NOV 23 2004 OKZ039-231400- STEPHENS OK- 741 AM CST TUE NOV 23 2004 ...SIGNIFICANT WEATHER ADVISORY... THIS SIGNIFICANT WEATHER ADVISORY IS FOR SOUTHEASTERN STEPHENS COUNTY. A STRONG THUNDERSTORM WAS LOCATED 9 MILES WEST OF LOCO AT 741 AM CST...MOVING NORTHEAST AT 30 MPH. SMALL HAIL AND HEAVY RAIN ARE LIKELY. 24
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 23, 10:42 AM CST | Severe Thunderstorm Warning | OUN | Bryan | 33 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2004Every 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.