Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 521, NWS Norman, OK

August 24, 2005Alfalfa County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Aug 24, 2005, 4:50 PM CDT for Alfalfa County, Oklahoma. It was in force for 55 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Aug 24, 2005, 4:50 PM CDT (21:50 UTC)
Expired: Aug 24, 2005, 5:45 PM CDT
In force: 55 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), 31 km from the middle of the area, began a volume at 21:53 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 was reported inside it

Time	Report	Where	Remark
Aug 24, 5:05 PM CDT	HAIL 0.75	9 Wsw Cherokee, OK

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 24, 3:45 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Lamont, OK (KLMN), launched 12:00Z, 9.8 hours before the alert went out and 85 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: 1154 J/kg
Mixed-layer CIN: -99 J/kg
Mixed-layer LCL: 814 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 164 m²/s²
0-3 km storm-relative helicity: 275 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 7.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS54 KOUN 242150
SVROUN
OKC003-242245-
/O.NEW.KOUN.SV.W.0521.050824T2150Z-050824T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
450 PM CDT WED AUG 24 2005

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ALFALFA COUNTY IN NORTHWEST OKLAHOMA

* UNTIL 545 PM CDT

* AT 450 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 7 MILES SOUTHWEST OF ALINE...MOVING NORTHEAST
  AT 15 MPH.

* LOCATIONS IN THE WARNING INCLUDE ALINE...CARMEN...CHEROKEE...
  INGERSOLL...JET...LAMBERT AND SOUTHWESTERN GREAT SALT PLAINS LAKE.

HAIL UP TO THE SIZE OF GOLFBALLS AND WINDS OF 70 MPH ARE LIKELY.

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH NO ADVANCE WARNING.
MOVE IMMEDIATELY TO A STORM SHELTER... BASEMENT OR STURDY BUILDING IF
A TORNADO IS SIGHTED.

LAT...LON 3656 9857 3644 9851 3652 9835 3668 9813
      3692 9847

$$
CJS

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 24, 4:13 PM CDT	Severe Thunderstorm Warning	OUN	Major	47 min
Aug 24, 4:31 PM CDT	Severe Thunderstorm Warning	OUN	Woods	44 min
Aug 24, 4:52 PM CDT	Severe Thunderstorm Warning	OUN	Garfield	53 min
Aug 24, 5:06 PM CDT	Severe Thunderstorm Warning	OUN	Major	39 min
Aug 24, 5:45 PM CDT	Severe Thunderstorm Warning	OUN	Garfield	45 min
Aug 24, 6:25 PM CDT	Severe Thunderstorm Warning	OUN	Garfield	65 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2005 Every severe thunderstorm warning in 2005

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.