Alert archive / Oklahoma / Tornado Warnings in 2012

Tornado Warning 34, NWS Norman, OK

April 15, 2012Beckham County, Roger Mills County, Oklahoma

NWS Norman, OK issued this tornado warning at Apr 15, 2012, 12:03 AM CDT for Beckham County, Roger Mills County, Oklahoma. It was in force for 27 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: Apr 15, 2012, 12:03 AM CDT (05:03 UTC)
Expired: Apr 15, 2012, 12:30 AM CDT
In force: 27 min
Issued by: NWS Norman, OK
Area: Storm-based polygon

Counties Beckham County, OK, Roger Mills County, OK

The radar

The Altus AFB radar (KFDR), 142 km from the middle of the area, began a volume at 05:07 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
Apr 15, 12:30 AM CDT	TSTM WND GST 60	Cheyenne, 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
Apr 14, 5:24 PM CDT	Tornado Watch PDS	SPC	9 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 5.1 hours before the alert went out and 197 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: 5237 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: 121 m²/s²
0-3 km storm-relative helicity: 112 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.

371 
WFUS54 KOUN 150503
TOROUN
OKC009-129-150530-
/O.NEW.KOUN.TO.W.0034.120415T0503Z-120415T0530Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORMAN OK
1203 AM CDT SUN APR 15 2012

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* TORNADO WARNING FOR...
  EXTREME NORTHEASTERN BECKHAM COUNTY IN WEST CENTRAL OKLAHOMA...
  ROGER MILLS COUNTY IN WEST CENTRAL OKLAHOMA...

* UNTIL 1230 AM CDT

* AT 1202 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS 
  DETECTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. 
  THIS DANGEROUS STORM WAS LOCATED 7 MILES NORTHEAST OF SWEETWATER...
  MOVING NORTHEAST AT 60 MPH.

* LOCATIONS IMPACTED INCLUDE...
  ELK CITY...CHEYENNE...HAMMON...STRONG CITY...SWEETWATER...
  DEMPSEY AND BERLIN. 

THIS INCLUDES INTERSTATE 40 NEAR MILE MARKER 41.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

GET IN...GET DOWN AND COVER UP. TAKE COVER NOW IN A STORM SHELTER 
OR AN INTERIOR ROOM OF A STURDY BUILDING. STAY AWAY FROM DOORS AND 
WINDOWS.

THE TORNADO WILL BE HIDDEN BY RAIN AND YOU MAY NOT SEE IT. DO NOT 
WAIT. TAKE COVER NOW.

&&

LAT...LON 3577 9938 3544 9936 3540 9937 3537 9990
      3553 9997
TIME...MOT...LOC 0502Z 242DEG 53KT 3549 9982 

$$

WR

1 follow-up statement

155 
WWUS54 KOUN 150519
SVSOUN
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
1219 AM CDT SUN APR 15 2012

OKC009-129-150530-
/O.CON.KOUN.TO.W.0034.000000T0000Z-120415T0530Z/
BECKHAM OK-ROGER MILLS OK-
1219 AM CDT SUN APR 15 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1230 AM CDT FOR 
EXTREME NORTHEASTERN BECKHAM AND ROGER MILLS COUNTIES...

AT 1216 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED 
A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS 
DANGEROUS STORM WAS LOCATED NEAR CHEYENNE...MOVING NORTHEAST AT 50 
MPH. 

LOCATIONS IMPACTED INCLUDE...
CHEYENNE...HAMMON...STRONG CITY...DEMPSEY AND BERLIN. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

GET IN...GET DOWN AND COVER UP. TAKE COVER NOW IN A STORM SHELTER 
OR AN INTERIOR ROOM OF A STURDY BUILDING. STAY AWAY FROM DOORS AND 
WINDOWS.

THE TORNADO WILL BE HIDDEN BY RAIN AND YOU MAY NOT SEE IT. DO NOT 
WAIT. TAKE COVER NOW.

&&

LAT...LON 3577 9938 3548 9936 3546 9937 3543 9984
      3559 9984
TIME...MOT...LOC 0516Z 243DEG 44KT 3555 9967 

$$

WR

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 14, 7:06 PM CDT	Tornado Warning	OUN	Alfalfa, Woods	54 min
Apr 14, 7:09 PM CDT	Tornado Warning	OUN	Major, Woods	36 min
Apr 14, 7:35 PM CDT	Tornado Warning	OUN	Alfalfa, Woods	40 min
Apr 14, 8:07 PM CDT	Tornado Warning	OUN	Alfalfa	38 min
Apr 14, 10:35 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Harper, Woods, Woodward	40 min
Apr 14, 10:56 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Roger Mills, Woodward	49 min
Apr 14, 11:13 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Harper, Woods, Woodward	62 min
Apr 14, 11:19 PM CDT	Special Weather Statement	OUN	Alfalfa, Beckham, Dewey	56 min
Apr 14, 11:41 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Custer, Dewey, Ellis, Greer, Harmon and 3 more	64 min
Apr 14, 11:53 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Roger Mills, Woodward	37 min
Apr 15, 12:00 AM CDT	Tornado Warning	OUN	Ellis, Harper, Woodward	30 min
Apr 15, 12:16 AM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Ellis, Harper, Major, Woods, Woodward	59 min
Apr 15, 12:16 AM CDT	Tornado Warning	OUN	Ellis, Harper, Woodward	29 min
Apr 15, 12:33 AM CDT	Tornado Warning	OUN	Custer, Dewey, Roger Mills	42 min
Apr 15, 12:39 AM CDT	Severe Thunderstorm Warning	OUN	Beckham, Custer, Dewey, Ellis, Greer, Harmon and 5 more	66 min
Apr 15, 12:42 AM CDT	Tornado Warning	OUN	Harper, Woods, Woodward	33 min
Apr 15, 1:15 AM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Dewey, Grant, Major, Woods, Woodward	60 min
Apr 15, 1:29 AM CDT	Special Weather Statement	OUN	Blaine, Caddo, Kingfisher, Tillman	61 min
Apr 15, 1:36 AM CDT	Severe Thunderstorm Warning	OUN	Blaine, Caddo, Canadian, Comanche, Custer, Dewey and 3 more	54 min
Apr 15, 1:41 AM CDT	Severe Thunderstorm Warning	OUN	Comanche, Jackson, Kiowa, Tillman	64 min
Apr 15, 2:34 AM CDT	Severe Thunderstorm Warning	OUN	Blaine, Caddo, Canadian, Comanche, Grady, Kingfisher and 3 more	56 min
Apr 15, 2:37 AM CDT	Special Weather Statement	OUN	Lincoln, McClain, Payne, Pottawatomie	68 min
Apr 15, 2:44 AM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Grady, Jefferson, Stephens, Tillman	45 min
Apr 15, 3:06 AM CDT	Special Weather Statement	OUN	Kay, Noble	24 min
Apr 15, 3:36 AM CDT	Special Weather Statement	OUN	Grady, Kay, Logan, McClain, Noble, Oklahoma and 1 more	54 min
Apr 15, 3:40 AM CDT	Special Weather Statement	OUN	Jefferson, Stephens	65 min
Apr 15, 4:35 AM CDT	Special Weather Statement	OUN	Cleveland, Garvin, Lincoln, Payne, Pottawatomie, Seminole	55 min
Apr 15, 4:37 AM CDT	Special Weather Statement	OUN	Carter, Garvin, Johnston, Love, Marshall, Murray and 1 more	53 min
Apr 15, 5:36 AM CDT	Special Weather Statement	OUN	Coal, Hughes, Pontotoc, Seminole	54 min
Apr 15, 6:52 AM CDT	Special Weather Statement	OUN	Atoka, Coal, Hughes	23 min
Apr 15, 7:53 AM CDT	Severe Thunderstorm Warning	OUN	Bryan	52 min
Apr 15, 8:27 AM CDT	Severe Thunderstorm Warning	OUN	Atoka	48 min
Apr 15, 9:03 AM CDT	Special Weather Statement	OUN	Bryan	27 min
Apr 15, 9:34 AM CDT	Special Weather Statement	OUN	Atoka	26 min
Apr 15, 11:00 AM CDT	Wind Advisory	OUN	Alfalfa, Beckham, Blaine, Custer, Dewey, Ellis and 11 more	6 hr

Nearby

Tornado Warnings in Oklahoma, 2012 Every tornado warning in 2012 Tornadoes in 2012

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.