Alert archive / Oklahoma / Tornado Warnings in 2017

Tornado Warning 11, NWS Amarillo, TX

May 16, 2017Beaver County, Oklahoma

NWS Amarillo, TX issued this tornado warning at May 16, 2017, 3:40 PM CDT for Beaver County, Oklahoma. It was in force for 20 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 16, 2017, 3:40 PM CDT (20:40 UTC)
Expired: May 16, 2017, 4:00 PM CDT
In force: 20 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 2.75 in

County Beaver County, OK

The radar

The Dodge City radar (KDDC), 98 km from the middle of the area, began a volume at 20:38 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.

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, 1:54 PM CDT	Tornado Watch PDS	SPC	8 hr

The nearest sounding before it

Dodge City, (KDDC), launched 12:00Z, 8.7 hours before the alert went out and 102 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: 93 J/kg
Mixed-layer CIN: -432 J/kg
Mixed-layer LCL: 2110 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 281 m²/s²
0-3 km storm-relative helicity: 261 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

225 
WFUS54 KAMA 162040
TORAMA
OKC007-162100-
/O.NEW.KAMA.TO.W.0011.170516T2040Z-170516T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Amarillo TX
340 PM CDT TUE MAY 16 2017

The National Weather Service in Amarillo has issued a

* Tornado Warning for...
  North central Beaver County in the Panhandle of Oklahoma...

* Until 400 PM CDT
    
* At 340 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 10 miles east of Forgan, or 13 miles northeast of
  Beaver, moving northeast at 40 mph.

  HAZARD...Tornado and baseball 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 tornadic thunderstorm will remain over mainly rural areas of
  north central Beaver County.

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 3687 10034 3693 10049 3700 10044 3700 10020
TIME...MOT...LOC 2040Z 210DEG 36KT 3696 10036 

TORNADO...RADAR INDICATED
HAIL...2.75IN

$$

Ward

1 follow-up statement

612 
WWUS54 KAMA 162056
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
356 PM CDT TUE MAY 16 2017

OKC007-162106-
/O.EXP.KAMA.TO.W.0011.000000T0000Z-170516T2100Z/
Beaver OK-
356 PM CDT TUE MAY 16 2017

...THE TORNADO WARNING FOR NORTH CENTRAL BEAVER COUNTY WILL EXPIRE AT
400 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire.

A tornado watch remains in effect until 1000 PM CDT for the Panhandle
of Oklahoma.

LAT...LON 3687 10034 3693 10049 3700 10044 3700 10020
TIME...MOT...LOC 2056Z 211DEG 13KT 3701 10034 

$$

Ward

The office that day

Everything else NWS Amarillo, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 15, 7:22 PM CDT	Severe Thunderstorm Warning	AMA	Cimarron, Texas	53 min
May 15, 7:58 PM CDT	Severe Thunderstorm Warning	AMA	Cimarron, Texas	77 min
May 15, 8:53 PM CDT	Severe Thunderstorm Warning	AMA	Texas	52 min
May 15, 9:12 PM CDT	Special Weather Statement	AMA	Texas	33 min
May 15, 9:29 PM CDT	Severe Thunderstorm Warning	AMA	Texas	61 min
May 15, 10:28 PM CDT	Special Weather Statement	AMA	Beaver	32 min
May 16, 1:42 PM CDT	Severe Thunderstorm Warning	AMA	Beaver, Texas	63 min
May 16, 2:44 PM CDT	Severe Thunderstorm Warning	AMA	Beaver, Texas	61 min
May 16, 2:44 PM CDT	Severe Thunderstorm Warning	AMA	Beaver, Texas	61 min
May 16, 2:58 PM CDT	Tornado Warning	AMA	Beaver	47 min
May 16, 3:16 PM CDT	Tornado Warning	AMA	Beaver, Texas	44 min
May 16, 3:45 PM CDT	Severe Thunderstorm Warning	AMA	Beaver	75 min
May 16, 5:02 PM CDT	Severe Thunderstorm Warning	AMA	Beaver, Texas	32 min

Nearby

Tornado Warnings in Oklahoma, 2017 Every tornado warning in 2017 Tornadoes in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.