Alert archive / Oklahoma / Tornado Warnings in 2015

Tornado Warning 3, NWS Norman, OK

April 8, 20154 counties in Oklahoma

NWS Norman, OK issued this tornado warning at Apr 8, 2015, 5:55 PM CDT for 4 counties in Oklahoma. It was in force for 50 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: Apr 8, 2015, 5:55 PM CDT (22:55 UTC)
Expired: Apr 8, 2015, 6:45 PM CDT
In force: 50 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 2.5 in

Counties Dewey County, OK, Ellis County, OK, Roger Mills County, OK, Woodward County, OK

The radar

The Vance AFB radar (KVNX), 133 km from the middle of the area, began a volume at 22:55 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 8, 5:55 PM CDT	HAIL 1.75	8 W Camargo, OK	TIME ESTIMATED FROM RADAR.
Apr 8, 6:20 PM CDT	HAIL 1	7 Ne Camargo, OK
Apr 8, 6:50 PM CDT	HAIL 1	1 E Cestos, 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 8, 3:37 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 10.9 hours before the alert went out and 198 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: 1989 J/kg
Mixed-layer CIN: -278 J/kg
Mixed-layer LCL: 931 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 328 m²/s²
0-3 km storm-relative helicity: 298 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.

724 
WFUS54 KOUN 082255
TOROUN
OKC043-045-129-153-082345-
/O.NEW.KOUN.TO.W.0003.150408T2255Z-150408T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORMAN OK
555 PM CDT WED APR 8 2015

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN ROGER MILLS COUNTY IN WESTERN OKLAHOMA...
  NORTHWESTERN DEWEY COUNTY IN NORTHWESTERN OKLAHOMA...
  SOUTHEASTERN WOODWARD COUNTY IN NORTHWESTERN OKLAHOMA...
  SOUTHEASTERN ELLIS COUNTY IN NORTHWESTERN OKLAHOMA...

* UNTIL 645 PM CDT
    
* AT 555 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 10 MILES SOUTHEAST OF HARMON...MOVING EAST AT
  35 MPH.

  HAZARD...TORNADO AND TENNIS BALL SIZE HAIL. 

  SOURCE...RADAR INDICATED ROTATION. 

  IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
           SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. 
           DAMAGE TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR.  TREE 
           DAMAGE IS LIKELY. 

* THIS DANGEROUS STORM WILL BE NEAR...
  CAMARGO AROUND 615 PM CDT.
  VICI AROUND 620 PM CDT.
  CESTOS AROUND 640 PM CDT.
  TALOGA AROUND 645 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN A
MOBILE HOME...OR IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL
SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3595 9955 3606 9959 3634 9908 3595 9890
TIME...MOT...LOC 2255Z 249DEG 29KT 3601 9948 

TORNADO...RADAR INDICATED
HAIL...2.50IN

$$

AUSTIN

2 follow-up statements

886 
WWUS54 KOUN 082312
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
612 PM CDT WED APR 8 2015

OKC043-045-129-153-082345-
/O.CON.KOUN.TO.W.0003.000000T0000Z-150408T2345Z/
ROGER MILLS OK-DEWEY OK-WOODWARD OK-ELLIS OK-
612 PM CDT WED APR 8 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR
NORTHEASTERN ROGER MILLS...NORTHWESTERN DEWEY...SOUTHEASTERN WOODWARD
AND SOUTHEASTERN ELLIS COUNTIES...
        
AT 611 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR CAMARGO...MOVING EAST AT 30 MPH.

HAZARD...TORNADO AND TENNIS BALL SIZE HAIL. 

SOURCE...WEATHER SPOTTERS AND BROADCAST MEDIA REPORTED A FUNNEL 
         CLOUD. 

IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
         SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE 
         TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR.  TREE DAMAGE IS 
         LIKELY. 

LOCATIONS IMPACTED INCLUDE...
TALOGA...VICI...CAMARGO AND CESTOS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN A
MOBILE HOME...OR IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL
SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3595 9946 3607 9949 3626 9904 3595 9890
TIME...MOT...LOC 2311Z 256DEG 25KT 3602 9935 

TORNADO...RADAR INDICATED
HAIL...2.50IN

$$

AUSTIN

912 
WWUS54 KOUN 082322
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
622 PM CDT WED APR 8 2015

OKC045-129-082332-
/O.CAN.KOUN.TO.W.0003.000000T0000Z-150408T2345Z/
ROGER MILLS OK-ELLIS OK-
622 PM CDT WED APR 8 2015

...THE TORNADO WARNING FOR NORTHEASTERN ROGER MILLS AND SOUTHEASTERN
ELLIS COUNTIES IS CANCELLED...
    
THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT 
OF THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT FOR NORTHWESTERN
OKLAHOMA.

LAT...LON 3600 9934 3612 9937 3626 9904 3601 9893
TIME...MOT...LOC 2322Z 242DEG 23KT 3605 9928 

$$

OKC043-153-082345-
/O.CON.KOUN.TO.W.0003.000000T0000Z-150408T2345Z/
DEWEY OK-WOODWARD OK-
622 PM CDT WED APR 8 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR
NORTHWESTERN DEWEY AND SOUTHEASTERN WOODWARD COUNTIES...
    
AT 622 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR CAMARGO...MOVING NORTHEAST AT 25 MPH.

HAZARD...TORNADO AND TWO INCH HAIL. 

SOURCE...RADAR INDICATED ROTATION. 

IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
         SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE 
         TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR.  TREE DAMAGE IS 
         LIKELY. 

LOCATIONS IMPACTED INCLUDE...
TALOGA...VICI...CAMARGO AND CESTOS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN A
MOBILE HOME...OR IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL
SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3600 9934 3612 9937 3626 9904 3601 9893
TIME...MOT...LOC 2322Z 242DEG 23KT 3605 9928 

TORNADO...RADAR INDICATED
HAIL...2.00IN

$$

AUSTIN

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 8, 10:53 AM CDT	Special Weather Statement	OUN	Greer, Jackson, Kiowa, Tillman, Washita	22 min
Apr 8, 11:16 AM CDT	Special Weather Statement	OUN	Blaine, Caddo, Comanche, Cotton, Custer, Greer and 4 more	59 min
Apr 8, 1:47 PM CDT	Special Weather Statement	OUN	Kay	13 min
Apr 8, 3:51 PM CDT	Special Weather Statement	OUN	Roger Mills	39 min
Apr 8, 4:27 PM CDT	Special Weather Statement	OUN	Woods	33 min
Apr 8, 4:30 PM CDT	Severe Thunderstorm Warning	OUN	Woods, Woodward	30 min
Apr 8, 4:32 PM CDT	Special Weather Statement	OUN	Roger Mills	28 min
Apr 8, 4:32 PM CDT	Severe Thunderstorm Warning	OUN	Woods, Woodward	28 min
Apr 8, 4:46 PM CDT	Severe Thunderstorm Warning	OUN	Custer, Dewey, Ellis, Roger Mills	44 min
Apr 8, 4:53 PM CDT	Special Weather Statement	OUN	Harper	37 min
Apr 8, 4:55 PM CDT	Severe Thunderstorm Warning	OUN	Woods	35 min
Apr 8, 4:57 PM CDT	Severe Thunderstorm Warning	OUN	Harper, Woods	33 min
Apr 8, 5:05 PM CDT	Special Weather Statement	OUN	Roger Mills	40 min
Apr 8, 5:12 PM CDT	Special Weather Statement	OUN	Woodward	33 min
Apr 8, 5:21 PM CDT	Severe Thunderstorm Warning	OUN	Harper, Woods, Woodward	39 min
Apr 8, 5:24 PM CDT	Severe Thunderstorm Warning	OUN	Dewey, Ellis, Roger Mills, Woodward	51 min
Apr 8, 5:25 PM CDT	Severe Thunderstorm Warning	OUN	Harper, Woods	35 min
Apr 8, 5:39 PM CDT	Special Weather Statement	OUN	Woodward	36 min
Apr 8, 6:00 PM CDT	Special Weather Statement	OUN	Woods	15 min
Apr 8, 6:41 PM CDT	Special Weather Statement	OUN	Roger Mills	34 min
Apr 8, 6:42 PM CDT	Severe Thunderstorm Warning	OUN	Dewey, Major, Woodward	29 min

Nearby

Tornado Warnings in Oklahoma, 2015 Every tornado warning in 2015 Tornadoes in 2015

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.