Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 821, NWS Norman, OK

September 5, 2008Roger Mills County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Sep 5, 2008, 4:45 PM CDT for Roger Mills County, Oklahoma. It was in force for 60 min. 3 reports 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: Sep 5, 2008, 4:45 PM CDT (21:45 UTC)
Expired: Sep 5, 2008, 5:45 PM CDT
In force: 60 min
Issued by: NWS Norman, OK
Area: Storm-based polygon

County Roger Mills County, OK

The radar

The Altus AFB radar (KFDR), 165 km from the middle of the area, began a volume at 21:48 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
Sep 5, 5:20 PM CDT	HAIL 2.75	6 Ssw Reydon, OK	HAIL BROKE WINDOWS AT A HOUSE.
Sep 5, 5:35 PM CDT	HAIL 1.75	8 N Sweetwater, OK
Sep 5, 5:35 PM CDT	HAIL 2.5	8 S Reydon, 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
Sep 5, 2:32 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Fort Sill, OK (KFSI), launched 12:00Z, 9.8 hours before the alert went out and 172 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1188 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 80 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KOUN 052145
SVROUN
OKC129-052245-
/O.NEW.KOUN.SV.W.0821.080905T2145Z-080905T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
445 PM CDT FRI SEP 5 2008

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN ROGER MILLS COUNTY IN WESTERN OKLAHOMA...

* UNTIL 545 PM CDT

* AT 444 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 8 MILES WEST OF REYDON...MOVING EAST AT 15 MPH.
  HAIL UP TO THE SIZE OF PING PONG BALLS AND WINDS OF 65 MPH ARE
  LIKELY.

* LOCATIONS IN THE WARNING INCLUDE CRAWFORD...DEMPSEY...DURHAM...
  REYDON AND ROLL.

TAKE SHELTER FROM THE STORM IN A STURDY BUILDING AND MOVE AWAY FROM
WINDOWS.

LAT...LON 3581 9969 3543 9969 3548 9999 3587 9999
TIME...MOT...LOC 2144Z 285DEG 13KT 3567 10004

$$

BURKE

2 follow-up statements

000 
WWUS54 KOUN 052203
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
503 PM CDT FRI SEP 5 2008

OKC129-052245-
/O.CON.KOUN.SV.W.0821.000000T0000Z-080905T2245Z/
ROGER MILLS OK-
501 PM CDT FRI SEP 5 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CDT
FOR WESTERN ROGER MILLS COUNTY...

AT 501 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED AN 
INTENSE SEVERE THUNDERSTORM 4 MILES SOUTHWEST OF REYDON...MOVING 
SOUTHEAST AT 19 MPH. HAIL UP TO TWO INCHES IN DIAMETER...AND WINDS 
OF 65 MPH ARE LIKELY. THE MOST DANGEROUS PART OF THIS STORM WILL 
MOVE VERY CLOSE TO REYDON AND DEMPSEY.

MOVE INDOORS AND STAY AWAY FROM WINDOWS.

LAT...LON 3579 9999 3579 9969 3543 9969 3548 9999
TIME...MOT...LOC 2201Z 298DEG 16KT 3562 9996

$$

BURKE

000 
WWUS54 KOUN 052244
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
544 PM CDT FRI SEP 5 2008

OKC129-052253-
/O.EXP.KOUN.SV.W.0821.000000T0000Z-080905T2245Z/
ROGER MILLS OK-
543 PM CDT FRI SEP 5 2008

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN ROGER MILLS COUNTY
EXPIRES AT 545 PM CDT...

THE SEVERE STORM WAS MOVING OUT OF THE WARNED AREA...TOWARD THE 
SOUTHEAST. A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR A 
SMALL PORTION OF EXTREME SOUTHWESTERN ROGER MILLS COUNTY UNTIL 630 
PM CDT.

LAT...LON 3579 9999 3579 9969 3543 9969 3548 9999
TIME...MOT...LOC 2243Z 298DEG 16KT 3553 9976

$$

BURKE

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 5, 5:24 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Roger Mills	66 min
Sep 5, 6:11 PM CDT	Severe Thunderstorm Warning	OUN	Roger Mills	64 min
Sep 5, 6:23 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Greer, Harmon, Roger Mills	52 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2008 Every severe thunderstorm warning in 2008

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.