Severe Thunderstorm Warning 244, NWS Amarillo, TX

521 
WWUS54 KAMA 150421
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
1121 PM CDT MON AUG 14 2017

TXC011-065-117-129-179-375-381-150515-
/O.CON.KAMA.SV.W.0244.000000T0000Z-170815T0515Z/
Randall TX-Armstrong TX-Carson TX-Deaf Smith TX-Gray TX-Potter TX-
Donley TX-
1121 PM CDT MON AUG 14 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM CDT
FOR RANDALL...ARMSTRONG...SOUTHERN CARSON...SOUTHEASTERN DEAF
SMITH...SOUTHERN GRAY...SOUTHEASTERN POTTER AND NORTHWESTERN DONLEY
COUNTIES...

At 1121 PM CDT, severe thunderstorms were located along a line
extending from 7 miles northwest of Claude to 12 miles south of
Buffalo Lake, moving southeast at 30 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...Minor damage to roofs, siding, and trees is possible. 

Locations impacted include...
Amarillo, Hereford, Canyon, Panhandle, Clarendon, Claude, Lake
Tanglewood, Mclean, Groom, Howardwick, Buffalo Lake, Lake Mcclellan,
Wayside, Washburn, Umbarger, Palo Duro Canyon, Goodnight, Mescalero
Park, Dawn and Alanreed.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3475 10265 3548 10165 3523 10054 3516 10054
      3475 10107
TIME...MOT...LOC 0421Z 310DEG 28KT 3520 10141 3470 10212 

HAIL...<.75IN
WIND...60MPH
 
$$

Beat

966 
WWUS54 KAMA 150440
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
1140 PM CDT MON AUG 14 2017

TXC375-150449-
/O.CAN.KAMA.SV.W.0244.000000T0000Z-170815T0515Z/
Potter TX-
1140 PM CDT MON AUG 14 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN POTTER COUNTY IS
CANCELLED...

The storms which prompted the warning have weakened and therefore 
the warning has been cancelled.

LAT...LON 3475 10265 3493 10220 3502 10176 3528 10145
      3523 10054 3516 10054 3475 10107
TIME...MOT...LOC 0439Z 307DEG 30KT 3515 10141 3482 10168 3473 10215 

$$

TXC011-065-117-129-179-381-150515-
/O.CON.KAMA.SV.W.0244.000000T0000Z-170815T0515Z/
Randall TX-Armstrong TX-Carson TX-Deaf Smith TX-Gray TX-Donley TX-
1140 PM CDT MON AUG 14 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM CDT
FOR SOUTHERN RANDALL...ARMSTRONG...SOUTHEASTERN CARSON...SOUTHEASTERN
DEAF SMITH...SOUTHERN GRAY AND NORTHWESTERN DONLEY COUNTIES...

At 1139 PM CDT, severe thunderstorms were located along a line
extending from 3 miles northwest of Claude to 7 miles west of Wayside
to 11 miles south of Buffalo Lake, moving southeast at 35 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...Minor damage to roofs, siding, and trees is possible. 

Locations impacted include...
Hereford, Canyon, Clarendon, Claude, Mclean, Groom, Howardwick,
Buffalo Lake, Lake Mcclellan, Wayside, Washburn, Palo Duro Canyon,
Goodnight, Dawn, Alanreed and Greenbelt Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3475 10265 3493 10220 3502 10176 3528 10145
      3523 10054 3516 10054 3475 10107
TIME...MOT...LOC 0439Z 307DEG 30KT 3515 10141 3482 10168 3473 10215 

HAIL...<.75IN
WIND...60MPH
 
$$

Beat

337 
WWUS54 KAMA 150453
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
1153 PM CDT MON AUG 14 2017

TXC011-065-117-129-179-381-150502-
/O.CAN.KAMA.SV.W.0244.000000T0000Z-170815T0515Z/
Randall TX-Armstrong TX-Carson TX-Deaf Smith TX-Gray TX-Donley TX-
1153 PM CDT MON AUG 14 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN RANDALL...
ARMSTRONG...SOUTHEASTERN CARSON...SOUTHEASTERN DEAF SMITH...SOUTHERN
GRAY AND NORTHWESTERN DONLEY COUNTIES IS CANCELLED...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore the warning has been cancelled.  However heavy rain is
still possible with these thunderstorms.

LAT...LON 3475 10265 3493 10220 3502 10176 3528 10145
      3523 10054 3516 10054 3475 10107
TIME...MOT...LOC 0451Z 311DEG 34KT 3507 10130 3474 10157 3465 10204 

$$

Beat

Area Forecast Discussion
National Weather Service Amarillo TX
626 PM CDT Mon Aug 14 2017

.AVIATION...

For the 00z TAFs:

We will begin the period in VFR, but KAMA and KDHT (possibly KGUY)
will have thunderstorm chances later this evening which could
being about MVFR conditions for mainly ceilings. Visibilities
could also be reduced with the heavier precipitation
thunderstorms. Recent trends have shown slightly less chance for
thunderstorms, but felt KAMA and KDHT warranted a TEMPO group to
account for these chances. Models were suggesting some fog/mist
around during the overnight/morning hours as well, but these
chances appear less likely at this time. This could be an addition
to the next set of TAFs if conditions look favorable again.

Unfortunately, KDHT has lost its visibility sensor due to recent
thunderstorm damage from debris, so this TAF site will be without
amendments until it becomes fixed.

Guerrero

&&

.PREV DISCUSSION... /Issued 416 PM CDT Mon Aug 14 2017/

DISCUSSION...

Trend for the forecast continues with numerous periods of
thunderstorm chances, especially the overnight periods. We seem to
be in a perpetual pattern of increased night time precipitation
chances. Otherwise, temperatures look to be right around normal for
this time of year.

Satellite imagery shows a cumulus field located across central parts
of the Texas Panhandle basically aligned just ahead of a surface
trough axis. West of this axis across eastern parts of New Mexico
thunderstorms have already developed. Convective allowing models all
have these storms pushing east into our forecast area late this
afternoon/early evening. Ample instability will be around the
Panhandles this afternoon and evening, but the wind pattern through
the atmosphere doesn't have much turning/shear with only 20-30 knots
at most for 0-6km shear. Lower level wind speeds are especially
weak. Storms will be very slow movers. Chances are some of these
storms could be strong, but widespread severe weather does not look
likely. Downdraft CAPE from the RAP shows values around 1000-1300
which could lead to some strong wind gusts. Overall, strong wind
gusts appear to be the main threat as models indicate a linear
segment developing and pushing through the Panhandles. Cells are
discrete at the moment across New Mexico. In the upper levels there
is a jet streak over the area with the left exit region over western
parts of the forecast area leading to divergence aloft which should
aid in thunderstorm development/support so rain chances look decent
across portions of the forecast area, especially the Texas
Panhandle. Trend continues to show chances continuing into the
night, with thunderstorms pushing east of the forecast area by
sunrise if dissipation doesn't occur before then.

For Tuesday, thunderstorm chances continue as well, but again
widespread severe weather does not look likely. Ample CAPE will be
around again but shear parameters are weak. Strong storms will again
be possible tomorrow, and chances are wind will be the main threat
for Tuesday. Through the next couple of days there will be a chance
for moderate to heavy rainfall, especially localized within the
stronger thunderstorms given the higher precipitable water values
forecast. This is of course in addition to the slow storm movement
anticipated the next couple days.

Multiple thunderstorm chances are in the forecast through the
extended. At this time, it does not look like severe weather is too
likely Wednesday, and beyond this its too early to determine the
potential for severe weather.

Guerrero

&&

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

&&

Hazardous Weather Outlook...UPDATED
National Weather Service Amarillo TX
1031 PM CDT Mon Aug 14 2017

OKZ001>003-TXZ001>020-151100-
Cimarron-Texas-Beaver-Dallam-Sherman-Hansford-Ochiltree-Lipscomb-
Hartley-Moore-Hutchinson-Roberts-Hemphill-Oldham-Potter-Carson-
Gray-Wheeler-Deaf Smith-Randall-Armstrong-Donley-Collingsworth-
1031 PM CDT Mon Aug 14 2017

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

.DAY ONE...Tonight.

Thunderstorms are possible across much of the Panhandles tonight.
Some of the storms may become strong to severe, with damaging
winds and possibly small hail the primary hazards. In addition,
heavy rainfall will be possible, which may lead to localized
flooding or flash flooding.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Thunderstorms will be possible across portions of the Oklahoma
and Texas Panhandles Tuesday through Sunday. A few storms that
develop during this time frame may become strong to marginally
severe, with strong wind gusts and hail the primary hazards. In
addition, heavy rainfall may accompany thunderstorms, which may
lead to localized flooding or flash flooding.

.SPOTTER INFORMATION STATEMENT...

Spotter groups and emergency management officials across the
Oklahoma and Texas Panhandles should remain alert and be ready for
possible activation.

Schneider

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
845 PM CDT MON AUG 14 2017

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

0828 PM     TSTM WND GST     3 SW DALHART            36.03N 102.55W
08/14/2017  M60 MPH          HARTLEY            TX   ASOS

&&

EVENT NUMBER AMA1700831

KJS