Alert archive / Oklahoma / Tornado Warnings in 2015

Tornado Warning 49, NWS Norman, OK

May 8, 2015Cotton County, Tillman County, Oklahoma; Wichita County, Wilbarger County, Texas

NWS Norman, OK issued this tornado warning at May 8, 2015, 5:05 PM CDT for Cotton County, Tillman County, Oklahoma; Wichita County, Wilbarger County, Texas. It was in force for 40 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: May 8, 2015, 5:05 PM CDT (22:05 UTC)
Expired: May 8, 2015, 5:45 PM CDT
In force: 40 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Tornado: Observed
Hail: 1.75 in

Counties Cotton County, OK, Tillman County, OK, Wichita County, TX, Wilbarger County, TX

The radar

The Altus AFB radar (KFDR), 31 km from the middle of the area, began a volume at 21:56 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
May 8, 5:20 PM CDT	TSTM WND DMG	1 W Electra, TX	SPOTTER REPORTS WIND DAMAGE TO SILO AND TREES BETWEEN HAROLD AND ELECTRA... WINDS ESTIMATED 80 TO 90 MPH.
May 8, 5:21 PM CDT	TORNADO	3 Nne Haynesville, TX	STORM CHASER PROVIDED PHOTOGRAPH. MINOR DAMAGE TO A METAL OUTBUILDING ALSO REPORTED.
May 8, 5:39 PM CDT	HAIL 2.75	Grandfield, 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
May 8, 12:51 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 10.1 hours before the alert went out and 184 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: 171 J/kg
Mixed-layer CIN: -108 J/kg
Mixed-layer LCL: 656 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 180 m²/s²
0-3 km storm-relative helicity: 119 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

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

628 
WFUS54 KOUN 082205
TOROUN
OKC033-141-TXC485-487-082245-
/O.NEW.KOUN.TO.W.0049.150508T2205Z-150508T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORMAN OK
505 PM CDT FRI MAY 8 2015

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHWESTERN COTTON COUNTY IN SOUTHWESTERN OKLAHOMA...
  SOUTHERN TILLMAN COUNTY IN SOUTHWESTERN OKLAHOMA...
  NORTHERN WICHITA COUNTY IN NORTHERN TEXAS...
  EAST CENTRAL WILBARGER COUNTY IN NORTHERN TEXAS...

* UNTIL 545 PM CDT

* AT 505 PM CDT...A CONFIRMED TORNADO WAS LOCATED NEAR OKLAUNION...
  MOVING EAST AT 40 MPH.

  HAZARD...DAMAGING TORNADO AND GOLF BALL SIZE HAIL. 

  SOURCE...EMERGENCY MANAGEMENT CONFIRMED TORNADO. 

  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...
  NORTHWESTERN WICHITA FALLS...BURKBURNETT...IOWA PARK...ELECTRA...
  GRANDFIELD...DAVIDSON...DEVOL...HARROLD...OKLAUNION...PLEASANT
  VALLEY AND HAYNESVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

HEAVY RAINFALL MAY HIDE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. TAKE COVER NOW.

&&

LAT...LON 3399 9916 3425 9917 3432 9859 3411 9853
      3392 9862
TIME...MOT...LOC 2205Z 272DEG 33KT 3412 9909 

TORNADO...OBSERVED
HAIL...1.75IN

$$

KURTZ

1 follow-up statement

395 
WWUS54 KOUN 082221
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
521 PM CDT FRI MAY 8 2015

OKC033-141-TXC485-487-082245-
/O.CON.KOUN.TO.W.0049.000000T0000Z-150508T2245Z/
COTTON OK-TILLMAN OK-WICHITA TX-WILBARGER TX-
521 PM CDT FRI MAY 8 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR
SOUTHWESTERN COTTON...SOUTHEASTERN TILLMAN...NORTHERN WICHITA AND
EAST CENTRAL WILBARGER COUNTIES...
    
AT 520 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 6 MILES NORTH OF ELECTRA...MOVING EAST AT 35 MPH.

HAZARD...TORNADO AND GOLF 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. 

LOCATIONS IMPACTED INCLUDE...
BURKBURNETT...IOWA PARK...ELECTRA...GRANDFIELD...DEVOL AND
HAYNESVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

HEAVY RAINFALL MAY HIDE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. TAKE COVER NOW.

&&

LAT...LON 3401 9898 3422 9899 3428 9858 3411 9853
      3395 9861
TIME...MOT...LOC 2220Z 268DEG 31KT 3412 9891 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

KURTZ

The office that day

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

Issued	Product	Office	Counties	Lasted
May 7, 7:29 PM CDT	Areal Flood Advisory	OUN	Carter, Johnston, Love, Marshall	2 hr
May 7, 7:35 PM CDT	Special Weather Statement	OUN	Love	25 min
May 7, 7:41 PM CDT	Tornado Warning	OUN	Love	34 min
May 7, 8:27 PM CDT	Special Weather Statement	OUN	Bryan	33 min
May 7, 8:34 PM CDT	Severe Thunderstorm Warning	OUN	Bryan, Marshall	41 min
May 7, 9:41 PM CDT	Special Weather Statement	OUN	Atoka	34 min
May 7, 9:57 PM CDT	Areal Flood Advisory	OUN	Bryan, Marshall	2 hr
May 7, 11:58 PM CDT	Flash Flood Warning	OUN	Bryan	3 hr
May 8, 2:23 AM CDT	River Flood Warning	OUN	Bryan	28 hr
May 8, 4:36 AM CDT	Dense Fog Advisory	OUN	Alfalfa, Beckham, Blaine, Caddo, Canadian, Comanche and 17 more	5 hr
May 8, 12:30 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Harmon, Jackson	45 min
May 8, 1:10 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Harmon, Jackson, Kiowa	50 min
May 8, 1:55 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Greer, Jackson, Kiowa	50 min
May 8, 1:57 PM CDT	Severe Thunderstorm Warning	OUN	Harmon	48 min
May 8, 2:26 PM CDT	River Flood Warning	OUN	Jackson, Kiowa, Tillman	54 hr
May 8, 2:26 PM CDT	River Flood Warning	OUN	Comanche, Cotton	3 days
May 8, 2:33 PM CDT	Special Weather Statement	OUN	Caddo, Washita	42 min
May 8, 2:41 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Harmon, Jackson	49 min
May 8, 2:48 PM CDT	Areal Flood Advisory	OUN	Greer, Harmon, Jackson, Kiowa, Washita	3 hr
May 8, 3:21 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Jackson, Kiowa	39 min
May 8, 3:23 PM CDT	Special Weather Statement	OUN	Canadian	37 min
May 8, 3:55 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Kiowa, Washita	50 min
May 8, 3:55 PM CDT	Tornado Warning	OUN	Jackson, Tillman	50 min
May 8, 4:02 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Grady, Kingfisher	43 min
May 8, 4:16 PM CDT	Flash Flood Warning	OUN	Caddo, Greer, Harmon, Jackson, Kiowa, Washita	3 hr
May 8, 4:27 PM CDT	Flash Flood Warning	OUN	Caddo, Canadian, Cleveland, Grady, Kiowa, McClain and 1 more	6 hr
May 8, 4:28 PM CDT	Tornado Warning Tornado observed	OUN	Tillman	47 min
May 8, 4:37 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Canadian, Kiowa, Washita	38 min
May 8, 4:40 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Kingfisher, Logan, Oklahoma	50 min
May 8, 4:52 PM CDT	Severe Thunderstorm Warning	OUN	Tillman	38 min
May 8, 4:54 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Cleveland, Grady, McClain, Oklahoma	51 min
May 8, 5:10 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Canadian, Grady	50 min
May 8, 5:37 PM CDT	Severe Thunderstorm Warning	OUN	Cotton, Jefferson, Stephens, Tillman	68 min
May 8, 5:42 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Lincoln, Oklahoma, Pottawatomie	48 min
May 8, 6:01 PM CDT	Special Weather Statement	OUN	Cleveland	29 min
May 8, 6:04 PM CDT	Special Weather Statement	OUN	Comanche	26 min
May 8, 6:08 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Lincoln, Pottawatomie	52 min
May 8, 6:14 PM CDT	Tornado Warning Tornado observed	OUN	Cotton, Jefferson	46 min
May 8, 6:20 PM CDT	Areal Flood Advisory	OUN	Kay, Noble, Payne	3 hr
May 8, 6:29 PM CDT	Special Weather Statement	OUN	Stephens	31 min
May 8, 6:30 PM CDT	Flash Flood Warning	OUN	Cleveland, Lincoln, Oklahoma, Pottawatomie, Seminole	4 hr
May 8, 6:39 PM CDT	Areal Flood Advisory	OUN	Canadian, Lincoln, Logan, Noble, Oklahoma, Payne	3 hr
May 8, 6:41 PM CDT	Special Weather Statement	OUN	Greer, Harmon, Jackson, Tillman	64 min
May 8, 6:45 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Grady, Jefferson, Stephens	75 min
May 8, 6:53 PM CDT	Flash Flood Warning	OUN	Comanche, Cotton, Jefferson, Stephens	4 hr
May 8, 6:53 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Pottawatomie, Seminole	52 min
May 8, 6:56 PM CDT	Tornado Warning Tornado observed	OUN	Jefferson	35 min
May 8, 6:59 PM CDT	Tornado Warning	OUN	Lincoln, Pottawatomie, Seminole	31 min
May 8, 2:56 PM CDT	Severe Thunderstorm Warning	OUN	Foard, Hardeman	49 min
May 8, 3:17 PM CDT	Tornado Warning	OUN	Foard, Hardeman	43 min
May 8, 3:55 PM CDT	Severe Thunderstorm Warning	OUN	Foard, Hardeman	50 min
May 8, 5:08 PM CDT	Severe Thunderstorm Warning	OUN	Knox	52 min
May 8, 5:18 PM CDT	Tornado Warning	OUN	Knox	42 min
May 8, 6:38 PM CDT	Severe Thunderstorm Warning	OUN	Clay	52 min

Nearby

Tornado Warnings in Oklahoma, 2015 Tornado Warnings in Texas, 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.