Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 182, NWS Amarillo, TX

June 22, 2018Beaver County, Oklahoma

NWS Amarillo, TX issued this severe thunderstorm warning at Jun 22, 2018, 7:07 PM CDT for Beaver County, Oklahoma. It was in force for 53 min. 4 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: Jun 22, 2018, 7:07 PM CDT (00:07 UTC)
Expired: Jun 22, 2018, 8:00 PM CDT
In force: 53 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Hail: 1.75 in
Wind: 60.0 mph

County Beaver County, OK

The radar

The Dodge City radar (KDDC), 124 km from the middle of the area, began a volume at 00:10 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
Jun 22, 7:15 PM CDT	TSTM WND GST 70	1 Ssw Beaver, OK
Jun 22, 7:17 PM CDT	TORNADO	3 Nw Balko, OK
Jun 22, 7:20 PM CDT	TSTM WND GST 70	1 Ssw Beaver, OK
Jun 22, 7:45 PM CDT	TSTM WND GST 61	8 W Slapout, OK

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 3 storm reports to this severe thunderstorm warning; the first came 8 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 22, 3:29 PM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Dodge City, (KDDC), launched 00:00Z, 0.1 hours before the alert went out and 128 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: 394 J/kg
Mixed-layer CIN: -154 J/kg
Mixed-layer LCL: 1979 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 394 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 8.3

Open this sounding in Storm Lab

The text

As transmitted.

828 
WUUS54 KAMA 230007
SVRAMA
OKC007-230100-
/O.NEW.KAMA.SV.W.0182.180623T0007Z-180623T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Amarillo TX
707 PM CDT FRI JUN 22 2018

The National Weather Service in Amarillo has issued a

* Severe Thunderstorm Warning for...
  Beaver County in the Panhandle of Oklahoma...

* Until 800 PM CDT

* At 705 PM CDT, severe thunderstorms were located along a line
  extending from 7 miles southwest of Turpin to 6 miles northwest of
  Bryans Corner, moving east at 35 mph.

  HAZARD...Golf ball size hail and 60 mph wind gusts. 

  SOURCE...Radar indicated. 

  IMPACT...Minor damage to roofs, siding, and trees is possible. 
           People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. 

* Locations impacted include...
  Beaver, Forgan, Mocane, Elmwood, Floris and Balko. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3673 10017 3650 10031 3650 10087 3657 10078
      3700 10082 3700 10022
TIME...MOT...LOC 0005Z 248DEG 30KT 3678 10095 3666 10093 

HAIL...1.75IN
WIND...60MPH
 
$$

DGW

3 follow-up statements

801 
WWUS54 KAMA 230029
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
729 PM CDT FRI JUN 22 2018

OKC007-230100-
/O.CON.KAMA.SV.W.0182.000000T0000Z-180623T0100Z/
Beaver OK-
729 PM CDT FRI JUN 22 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM CDT
FOR BEAVER COUNTY...

At 729 PM CDT, severe thunderstorms were located along a line
extending from Floris to 6 miles east of Boyd, moving east at 35 mph.

HAZARD...Golf ball size hail and 70 mph wind gusts. 

SOURCE...Radar indicated hail and Oklahoma mesonet gusted to 70 mph. 

IMPACT...Expect some tree damage. Damage is likely to mobile homes, 
         roofs, and outbuildings. People and animals outdoors will 
         be injured. Expect hail damage to roofs, siding, windows, 
         and vehicles. 

Locations impacted include...
Beaver, Forgan, Mocane, Elmwood, Floris and Balko. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3673 10017 3650 10031 3650 10087 3657 10078
      3700 10082 3700 10022
TIME...MOT...LOC 0029Z 248DEG 30KT 3685 10072 3673 10070 

HAIL...1.75IN
WIND...70MPH
 
$$

DGW

964 
WWUS54 KAMA 230043
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
743 PM CDT FRI JUN 22 2018

OKC007-230100-
/O.CON.KAMA.SV.W.0182.000000T0000Z-180623T0100Z/
Beaver OK-
743 PM CDT FRI JUN 22 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM CDT
FOR CENTRAL BEAVER COUNTY...

At 742 PM CDT, severe thunderstorms were located along a line
extending from 3 miles west of Forgan to 4 miles southwest of Beaver,
moving east at 35 mph.

HAZARD...70 mph wind gusts and quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Expect some tree damage. Damage is likely to mobile homes, 
         roofs, and outbuildings. Hail damage to vehicles is 
         expected. 

Locations impacted include...
Elmwood.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3673 10017 3650 10031 3650 10055 3700 10049
      3700 10022
TIME...MOT...LOC 0042Z 248DEG 30KT 3689 10060 3677 10058 

HAIL...1.00IN
WIND...70MPH
 
$$

DGW

182 
WWUS54 KAMA 230050
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
750 PM CDT FRI JUN 22 2018

OKC007-230100-
/O.EXP.KAMA.SV.W.0182.000000T0000Z-180623T0100Z/
Beaver OK-
750 PM CDT FRI JUN 22 2018

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL BEAVER COUNTY WILL
EXPIRE AT 800 PM CDT...
    
The storms which prompted the warning have moved out of the area.
Therefore the warning will be allowed to expire.

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

LAT...LON 3673 10017 3650 10031 3650 10055 3700 10049
      3700 10022
TIME...MOT...LOC 0050Z 248DEG 30KT 3691 10053 3679 10051 

$$

DGW

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Amarillo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 22, 5:59 PM CDT, 1 hour 8 minutes earlier.

Area forecast discussion, Jun 22, 5:59 PM CDT, 1 hour 8 minutes before

Area Forecast Discussion
National Weather Service Amarillo TX
559 PM CDT Fri Jun 22 2018

.AVIATION...
00Z TAF Cycle

VFR conditions will prevail through 00Z Sunday, although
thunderstorms are expected to impact the Dalhart, Amarillo and
Guymon TAF sites between 00Z and 04Z Saturday with possible MVFR
ceilings and visibilities. South to southeast winds 20 to 30 knots
with gusts near 35 to 40 knots with shift to the north and
northeast after 02Z to 04Z Saturday at the Guymon and Dalhart TAF
sites and then at the Amarillo TAF site after 07Z to 09Z Saturday.
North to northeast winds 5 to 15 knots at all three TAF sites
after 10Z to 12Z Saturday.

Schneider

&&

.PREV DISCUSSION... /Issued 402 PM CDT Fri Jun 22 2018/

DISCUSSION...
Upper trough tracking east out of the Rockies and across the
Plains states this evening and tonight along with a cold front
pushing south across the Panhandles tonight will allow for
convection development through this evening and into the overnight
hours tonight. Cold front will move south of the forecast area by
Saturday morning or midday and is expected to become stationary
well south of the Panhandles by Saturday afternoon. Surface ridge
will build in behind the front Saturday across the forecast area
allowing for not as warm conditions.

Frontal boundary forecast to lift north and east as a warm front
by Sunday afternoon as a closed upper low tracks east out of the
northern and central Rockies and then into the central Plains
states by Sunday evening. Convection expected to develop once
again across mainly the northern and eastern Panhandles Sunday
afternoon into Sunday night. Upper high to build in over the
southwestern states by Monday night with northwesterly flow aloft
re-establishing itself over the Panhandles. Shortwave trough to
drop southeast out of the central Rockies Monday night with
chances for convection likely again Monday night. Upper high to
build in over the forecast area by the middle and end of next
week.

Schneider

&&

.AMA Watches/Warnings/Advisories...
TX...None.
OK...None.

&&

11

Hazardous weather outlook, Jun 22, 3:37 PM CDT, 3 hours 30 minutes before

Hazardous Weather Outlook
National Weather Service Amarillo TX
337 PM CDT Fri Jun 22 2018

OKZ001>003-TXZ001>020-317-231100-
Cimarron-Texas-Beaver-Dallam-Sherman-Hansford-Ochiltree-Lipscomb-
Hartley-Moore-Hutchinson-Roberts-Hemphill-Oldham-Potter-Carson-
Gray-Wheeler-Deaf Smith-Randall-Armstrong-Donley-Collingsworth-
Palo Duro Canyon-
337 PM CDT Fri Jun 22 2018

This Hazardous Weather Outlook is for the Texas and Oklahoma
Panhandles.

.DAY ONE...This Afternoon and Tonight.

Scattered thunderstorms are expected through tonight. Some storms
through tonight will likely become severe. The main threats will
be hail up to two inches in diameter and gusts of 70 MPH or more.
The potential for tornadoes will also exist this evening. Heavy
rains may occur, possibly leading to localized flooding.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Thunderstorms will be possible across parts of the Panhandles
Sunday afternoon through Monday night. Some of the storms may
become strong to marginally severe with large hail and strong
winds as the main threats.

.SPOTTER INFORMATION STATEMENT...

Emergency Managers and spotter groups need to be ready for
activation through this evening.

Schneider

In the hours before

Special weather statement, Jun 22, 6:31 PM CDT, 36 minutes before

Special Weather Statement
National Weather Service Amarillo TX
631 PM CDT FRI JUN 22 2018

TXZ002-007-230000-
Sherman TX-Moore TX-
631 PM CDT FRI JUN 22 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN SHERMAN AND
NORTHEASTERN MOORE COUNTIES UNTIL 700 PM CDT...

At 631 PM CDT, Doppler radar was tracking a strong thunderstorm 10
miles north of Sunray, or 16 miles southeast of Stratford, moving
east at 35 mph.

Nickel size hail and wind gusts of 50 to 55 mph will be possible with
this storm.

Locations impacted include...
Cactus and Sunray.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take shelter in a sturdy building if threatening weather approaches.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

A severe thunderstorm watch remains in effect until 1000 PM CDT for
the Panhandle of Texas.

LAT...LON 3593 10201 3621 10198 3630 10165 3594 10170
TIME...MOT...LOC 2331Z 264DEG 31KT 3616 10187

Guerrero

Local storm report, Jun 22, 6:42 PM CDT, 25 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
642 PM CDT FRI JUN 22 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0621 PM     HAIL             9 NNW SUNRAY            36.14N 101.88W
06/22/2018  E1.00 INCH       SHERMAN            TX   TRAINED SPOTTER

            SPOTTER ALSO REPORTED VERY HEAVY RAIN.

&&

EVENT NUMBER AMA1800298

LE

Local storm report, Jun 22, 6:56 PM CDT, 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
656 PM CDT FRI JUN 22 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0644 PM     TSTM WND GST     MORSE                   36.06N 101.47W
06/22/2018  E60 MPH          HANSFORD           TX   TRAINED SPOTTER

&&

EVENT NUMBER AMA1800299

LE

Special weather statement, Jun 22, 6:58 PM CDT, 9 minutes before

Special Weather Statement
National Weather Service Amarillo TX
658 PM CDT FRI JUN 22 2018

OKZ001-002-230030-
Cimarron OK-Texas OK-
658 PM CDT FRI JUN 22 2018

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN TEXAS AND NORTHEASTERN
CIMARRON COUNTIES UNTIL 730 PM CDT...

At 658 PM CDT, Doppler radar was tracking a strong thunderstorm 6
miles east of Keyes, or 17 miles southwest of Elkhart, moving
southeast at 60 mph.

Nickel size hail and wind gusts of 50 to 55 mph will be possible with
this storm.

Locations impacted include...
Eva and Sturgis.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take shelter in a sturdy building if threatening weather approaches.

&&

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

LAT...LON 3656 10180 3671 10230 3699 10214 3699 10152
TIME...MOT...LOC 2358Z 297DEG 50KT 3684 10215

DGW

Local storm report, Jun 22, 7:00 PM CDT, 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
700 PM CDT FRI JUN 22 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0647 PM     HAIL             7 SE EVA                36.72N 101.81W
06/22/2018  E1.75 INCH       TEXAS              OK   PUBLIC

&&

EVENT NUMBER AMA1800300

LE

Local storm report, Jun 22, 7:02 PM CDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE AMARILLO TX
702 PM CDT FRI JUN 22 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0647 PM     HAIL             2 S ADAMS               36.72N 101.08W
06/22/2018  E1.75 INCH       TEXAS              OK   PUBLIC

&&

CORRECTED LOCATION

EVENT NUMBER AMA1800300

LE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 22, 7:14 PM CDT	Tornado Warning Tornado observed	AMA	Beaver	30 min
Jun 22, 7:41 PM CDT	Severe Thunderstorm Warning	AMA	Beaver	41 min
Jun 22, 8:43 PM CDT	Special Weather Statement	AMA	Texas	32 min
Jun 22, 10:22 PM CDT	Special Weather Statement	AMA	Beaver	23 min
Jun 22, 10:45 PM CDT	Special Weather Statement	AMA	Beaver	30 min
Jun 23, 12:04 AM CDT	Special Weather Statement	AMA	Beaver	56 min
Jun 23, 1:13 AM CDT	Special Weather Statement	AMA	Beaver	62 min
Jun 23, 2:01 AM CDT	Areal Flood Advisory	AMA	Beaver, Texas	3 hr
Jun 23, 2:20 AM CDT	Special Weather Statement	AMA	Beaver	25 min
Jun 23, 4:11 AM CDT	Special Weather Statement	AMA	Texas	34 min
Jun 23, 4:24 AM CDT	Severe Thunderstorm Warning	AMA	Texas	36 min
Jun 23, 4:55 AM CDT	Special Weather Statement	AMA	Beaver	65 min
Jun 23, 5:18 AM CDT	Areal Flood Advisory	AMA	Beaver, Texas	4 hr
Jun 23, 6:15 AM CDT	Special Weather Statement	AMA	Beaver	45 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2018 Every severe thunderstorm warning in 2018

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.