Alert archive / Oklahoma / Tornado Warnings in 2016

Tornado Warning 32, NWS Norman, OK

May 16, 2016Ellis County, Roger Mills County, Oklahoma

NWS Norman, OK issued this tornado warning at May 16, 2016, 9:31 PM CDT for Ellis County, Roger Mills County, Oklahoma. It was in force for 29 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 16, 2016, 9:31 PM CDT (02:31 UTC)
Expired: May 16, 2016, 10:00 PM CDT
In force: 29 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.75 in

Counties Ellis County, OK, Roger Mills County, OK

The radar

The Amarillo radar (KAMA), 178 km from the middle of the area, began a volume at 02:31 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 16, 9:37 PM CDT	TORNADO	Durham, OK	REPORTED NEAR DURHAM. CORRECTED FOR TIME.
May 16, 9:42 PM CDT	HAIL 1	Durham, OK
May 16, 9:53 PM CDT	HAIL 1.25	6 Sw Crawford, 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 16, 8:59 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 2.5 hours before the alert went out and 178 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: 1214 J/kg
Mixed-layer CIN: -133 J/kg
Mixed-layer LCL: 1620 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 240 m²/s²
0-3 km storm-relative helicity: 349 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 16.5

Open this sounding in Storm Lab

The text

As transmitted.

265 
WFUS54 KOUN 170231
TOROUN
OKC045-129-170300-
/O.NEW.KOUN.TO.W.0032.160517T0231Z-160517T0300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORMAN OK
931 PM CDT MON MAY 16 2016

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN ROGER MILLS COUNTY IN WESTERN OKLAHOMA...
  EXTREME SOUTHWESTERN ELLIS COUNTY IN NORTHWESTERN OKLAHOMA...

* UNTIL 1000 PM CDT
    
* AT 931 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 3 MILES WEST OF DURHAM...MOVING EAST-SOUTHEAST
  AT 25 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...
  ROLL...CRAWFORD AND DURHAM. 

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.

&&

LAT...LON 3592 10000 3589 9965 3567 9975 3575 10000
TIME...MOT...LOC 0231Z 281DEG 21KT 3583 9996 

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

$$

..SPEG.

1 follow-up statement

558 
WWUS54 KOUN 170244
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
944 PM CDT MON MAY 16 2016

OKC045-129-170300-
/O.CON.KOUN.TO.W.0032.000000T0000Z-160517T0300Z/
ROGER MILLS OK-ELLIS OK-
944 PM CDT MON MAY 16 2016

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT FOR
NORTHWESTERN ROGER MILLS AND EXTREME SOUTH CENTRAL ELLIS COUNTIES...
    
AT 943 PM CDT...A CONFIRMED TORNADO WAS REPORTED NEAR
DURHAM. THE STORM IS MOVING EAST-SOUTHEAST AT 25 MPH.

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

SOURCE...WEATHER SPOTTERS 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...
ROLL...CRAWFORD AND DURHAM. 

LAT...LON 3589 9994 3589 9965 3567 9975 3578 9996
TIME...MOT...LOC 0243Z 284DEG 21KT 3582 9986 

TORNADO...OBSERVED
HAIL...1.75IN

$$

..SPEG.

The office that day

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

Issued	Product	Office	Counties	Lasted
May 16, 9:14 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Roger Mills	46 min
May 16, 9:57 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Custer, Greer, Roger Mills, Washita	48 min
May 16, 10:02 PM CDT	Tornado Warning	OUN	Beckham, Roger Mills	28 min
May 16, 10:29 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Custer, Greer, Roger Mills, Washita	46 min
May 16, 10:53 PM CDT	Special Weather Statement	OUN	Dewey	37 min
May 16, 10:57 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Greer, Kiowa, Washita	48 min
May 16, 11:04 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Custer, Dewey	41 min
May 16, 11:35 PM CDT	Special Weather Statement	OUN	Greer	25 min
May 16, 11:38 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Caddo, Canadian, Kingfisher	52 min
May 16, 11:43 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Kiowa, Tillman, Washita	47 min
May 16, 11:59 PM CDT	Special Weather Statement	OUN	Harmon	31 min
May 17, 12:37 AM CDT	Special Weather Statement	OUN	Kingfisher, Logan, Oklahoma	38 min
May 17, 12:38 AM CDT	Special Weather Statement	OUN	Grady	37 min
May 17, 12:43 AM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Grady	47 min
May 17, 12:53 AM CDT	Severe Thunderstorm Warning	OUN	Cleveland, McClain, Oklahoma	52 min
May 17, 1:24 AM CDT	Severe Thunderstorm Warning	OUN	Harmon, Jackson	51 min
May 17, 1:27 AM CDT	Severe Thunderstorm Warning	OUN	Garvin, Grady, McClain, Stephens	48 min
May 17, 1:32 AM CDT	Special Weather Statement	OUN	Cleveland, Lincoln, Pottawatomie	28 min
May 17, 1:46 AM CDT	Special Weather Statement	OUN	Tillman	29 min
May 17, 2:07 AM CDT	Severe Thunderstorm Warning	OUN	Cotton	38 min
May 17, 2:58 AM CDT	Special Weather Statement	OUN	Cotton	32 min
May 17, 4:14 AM CDT	Special Weather Statement	OUN	Kay, Noble, Payne	31 min
May 17, 7:36 AM CDT	Areal Flood Advisory	OUN	Tillman	3 hr

Nearby

Tornado Warnings in Oklahoma, 2016 Every tornado warning in 2016 Tornadoes in 2016

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.