Alert archive / Texas / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 56, NWS Amarillo, TX

May 10, 2017Armstrong County, Randall County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at May 10, 2017, 2:13 AM CDT for Armstrong County, Randall County, Texas. It was in force for 47 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 10, 2017, 2:13 AM CDT (07:13 UTC)
Expired: May 10, 2017, 3:00 AM CDT
In force: 47 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Armstrong County, TX, Randall County, TX

The radar

The Amarillo radar (KAMA), 47 km from the middle of the area, began a volume at 07:16 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

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
May 9, 10:59 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 7.2 hours before the alert went out and 46 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: 591 J/kg
Mixed-layer CIN: -96 J/kg
Mixed-layer LCL: 1404 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 6 m²/s²
0-3 km storm-relative helicity: 70 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

267 
WUUS54 KAMA 100713
SVRAMA
TXC011-381-100800-
/O.NEW.KAMA.SV.W.0056.170510T0713Z-170510T0800Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Amarillo TX
213 AM CDT WED MAY 10 2017

The National Weather Service in Amarillo has issued a

* Severe Thunderstorm Warning for...
  Southeastern Randall County in the Panhandle of Texas...
  Southwestern Armstrong County in the Panhandle of Texas...

* Until 300 AM CDT

* At 213 AM CDT, a severe thunderstorm was located 8 miles southeast
  of Happy, or 9 miles north of Tulia, moving northeast at 30 mph.

  HAZARD...Ping pong 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...
  Wayside and Palo Duro Canyon. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3475 10183 3499 10168 3485 10130 3475 10144
TIME...MOT...LOC 0713Z 221DEG 26KT 3467 10173 

HAIL...1.50IN
WIND...60MPH
 
$$

Ward

1 follow-up statement

956 
WWUS54 KAMA 100733
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
233 AM CDT WED MAY 10 2017

TXC011-381-100800-
/O.CON.KAMA.SV.W.0056.000000T0000Z-170510T0800Z/
Randall TX-Armstrong TX-
233 AM CDT WED MAY 10 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 AM CDT
FOR SOUTHEASTERN RANDALL AND SOUTHWESTERN ARMSTRONG COUNTIES...

At 233 AM CDT, a severe thunderstorm was located over Wayside, or 19
miles northeast of Tulia, moving northeast at 35 mph.

HAZARD...Ping pong 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...
Wayside and Palo Duro Canyon. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3475 10168 3487 10176 3499 10168 3485 10130
      3475 10144
TIME...MOT...LOC 0733Z 224DEG 30KT 3479 10160 

HAIL...1.50IN
WIND...60MPH
 
$$

Ward

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 May 10, 12:27 AM CDT, 1 hour 46 minutes earlier.

Area forecast discussion, May 10, 12:27 AM CDT, 1 hour 46 minutes before

Area Forecast Discussion
National Weather Service Amarillo TX
1227 AM CDT Wed May 10 2017

.AVIATION...06Z TAFS...
Various flight categories expected over the next 24 hours as
several storms are currently moving across the TX Panhandle. TSRA
expected at all TAF sites as early as to as late as 12z. Thereafter,
expect some MVFR cigs to linger as vicinity showers will persist
through about 18z. There could be a second round of storms toward
the end of the TAF period for KDHT and KGUY. Otherwise, VFR
conditions look to return after 15z at KAMA. Main storm threat
will be wind and hail. Winds for the overall TAF period will be
out of the south, but some northerly winds behind the storms have
already occurred and will be possible through the TAF period.

Weber

PREV DISCUSSION... /Issued 347 PM CDT Tue May 9 2017/

DISCUSSION...
Southeast upslope surface flow continues to bring moisture into the
region. Meanwhile an upper level low was located across far
northwest Mexico/southeast Arizona. Isolated to scattered
thunderstorms may develop over southeast New Mexico into the western
south plains this afternoon as the atmosphere becomes unstable given
the additional breaks in the clouds in this area. This region will
also be closer to the approaching upper level low's dynamics. The
question will be how far north and east can this convection make
into the Texas Panhandle this afternoon and evening. Models at this
point are not very aggressive with bringing too much convection into
our area as we are removed from the better dynamics.

Tonight, things change as the upper level low moves closer to our
area and a jet streak around the southeast side of the low moves
closer to our area providing better dynamics for our area. Also, PVA
ahead of a vort max and upper level diffluence over the area will be
present.  With this these things in place, showers and thunderstorms
are expected to develop late this evening along the New Mexico state
line and move east across the panhandles. Severe thunderstorms will
be possible with large hail and damaging winds the main threats. A
few tornadoes will also be possible with this activity and mainly
with any discrete cells that can form ahead of the line.

The upper level low will be in northern New Mexico by Wednesday
afternoon and this should provide enough dynamics for more
thunderstorms to develop along any boundary
(ie...outflow...dryline...surface trough) that may be found across
the northeast half of the CWA. Again, severe thunderstorms with
large hail and damaging winds will be possible in this area. A
tornado or two also can not be ruled out initially along the
boundary. The development of these storms will be somewhat
conditional depending on if the morning convection sticks around
longer than anticipated.

The upper level low then moves across the panhandles and into south
central Kansas by Thursday afternoon. Some more showers and
thunderstorms will be possible under the cold core and wrap around
of the low as it moves across and east of our area.

The pattern is expected to be dry for the panhandles Friday and
Saturday as upper level ridging builds across the plains. Chances of
thunderstorms return to the eastern panhandles Sunday and Monday as
weak disturbances move across and interact with a dryline in these
areas.

&&

.PRELIMINARY POINT TEMPS/POPS...
Amarillo TX                49  69  46  73  50 /  10  20   5   0   0
Beaver OK                  53  68  48  74  50 /  40  30  20   0   0
Boise City OK              44  63  41  71  48 /  40  30   5   0   0
Borger TX                  51  70  48  73  52 /  20  20  10   0   0
Boys Ranch TX              49  69  46  74  50 /  20  20   5   0   0
Canyon TX                  48  71  45  73  49 /  10  10   5   0   0
Clarendon TX               52  74  49  73  49 /  20  10   5   0   0
Dalhart TX                 46  66  43  73  49 /  30  20   5   0   5
Guymon OK                  49  66  46  72  49 /  40  30  10   0   0
Hereford TX                47  70  44  73  49 /  10  10   5   0   0
Lipscomb TX                52  70  48  73  50 /  40  30  20   0   0
Pampa TX                   49  68  46  72  50 /  20  20  10   0   0
Shamrock TX                54  75  51  74  49 /  30  20   5   0   0
Wellington TX              56  78  53  75  50 /  20  20   5   0   0

&&

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

&&

89/15

Hazardous weather outlook, May 9, 3:52 PM CDT, 10 hours 21 minutes before

Hazardous Weather Outlook
National Weather Service Amarillo TX
352 PM CDT Tue May 9 2017

OKZ001>003-TXZ001>020-100900-
Cimarron-Texas-Beaver-Dallam-Sherman-Hansford-Ochiltree-Lipscomb-
Hartley-Moore-Hutchinson-Roberts-Hemphill-Oldham-Potter-Carson-
Gray-Wheeler-Deaf Smith-Randall-Armstrong-Donley-Collingsworth-
352 PM CDT Tue May 9 2017

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

.DAY ONE...Tonight.

Thunderstorms are expected across the Oklahoma and Texas
Panhandles through tonight. Some of the storms may become severe
with large hail and damaging winds being the main threat. An
isolated tornado cannot be ruled out.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Thunderstorms will be possible across the area Wednesday through
Thursday evening. Storms may be strong to severe on Wednesday.
Main threats will be large hail and damaging winds. An isolated
tornado cannot be ruled out.

.SPOTTER INFORMATION STATEMENT...

Spotters should continue to monitor the forecast and be ready for
possible activation tonight and Wednesday.

In the hours before

Special weather statement, May 9, 11:37 PM CDT, 2 hours 36 minutes before

Special Weather Statement
National Weather Service Amarillo TX
1137 PM CDT TUE MAY 9 2017

TXZ001-002-006-007-100515-
Hartley TX-Sherman TX-Dallam TX-Moore TX-
1137 PM CDT TUE MAY 9 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN SHERMAN...
SOUTHEASTERN DALLAM...NORTHEASTERN HARTLEY AND NORTHWESTERN MOORE
COUNTIES UNTIL 1215 AM CDT...

At 1136 PM CDT, Doppler radar was tracking a strong thunderstorm 6
miles northwest of Hartley, or 7 miles southeast of Dalhart, moving
northeast at 35 mph.

Half inch hail and wind gusts up to 50 mph will be possible with this
storm.

Locations impacted include...
Dalhart, Hartley, Cactus and Conlen.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take shelter in a sturdy building if threatening weather approaches.

&&

LAT...LON 3585 10210 3576 10237 3584 10267 3638 10236
      3616 10187
TIME...MOT...LOC 0436Z 215DEG 32KT 3597 10244

Ward

Special weather statement, May 9, 11:50 PM CDT, 2 hours 23 minutes before

Special Weather Statement
National Weather Service Amarillo TX
1150 PM CDT TUE MAY 9 2017

OKZ002-100500-
Texas OK-
1150 PM CDT TUE MAY 9 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN TEXAS COUNTY UNTIL
MIDNIGHT CDT...

At 1149 PM CDT, Doppler radar was tracking a strong thunderstorm 4
miles west of Elkhart, moving northeast at 35 mph.

Penny size hail and wind gusts up to 50 mph will be possible with
this storm.

This storm will remain over mainly rural areas of northwestern Texas
County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take shelter in a sturdy building if threatening weather approaches.

&&

LAT...LON 3689 10196 3692 10203 3699 10203 3699 10187
TIME...MOT...LOC 0449Z 206DEG 30KT 3698 10197

Ward

Special weather statement, May 10, 12:02 AM CDT, 2 hours 11 minutes before

Special Weather Statement
National Weather Service Amarillo TX
1202 AM CDT WED MAY 10 2017

TXZ016-100530-
Deaf Smith TX-
1202 AM CDT WED MAY 10 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN DEAF SMITH COUNTY
UNTIL 1230 AM CDT...

At 1202 AM CDT, Doppler radar was tracking a strong thunderstorm 4
miles southeast of Hereford, moving northeast at 35 mph.

Penny size hail will be possible with this storm.

Locations impacted include...
Hereford and Dawn.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take shelter in a sturdy building if threatening weather approaches.

&&

LAT...LON 3475 10248 3503 10237 3495 10217 3475 10217
TIME...MOT...LOC 0502Z 206DEG 29KT 3479 10234

Ward

Special weather statement, May 10, 1:07 AM CDT, 1 hour 6 minutes before

Special Weather Statement
National Weather Service Amarillo TX
107 AM CDT WED MAY 10 2017

TXZ018-100630-
Armstrong TX-
107 AM CDT WED MAY 10 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN ARMSTRONG COUNTY UNTIL
130 AM CDT...

At 107 AM CDT, Doppler radar was tracking a strong thunderstorm 7
miles east of Wayside, or 21 miles north of Silverton, moving
northeast at 35 mph.

Nickel size hail will be possible with this storm.

Locations impacted include...
Wayside.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take shelter in a sturdy building if threatening weather approaches.

&&

A severe thunderstorm watch remains in effect until 700 AM CDT for
the Panhandle of Texas.

LAT...LON 3502 10148 3491 10109 3490 10109 3475 10124
      3475 10156
TIME...MOT...LOC 0607Z 209DEG 30KT 3476 10143

Ward

Special weather statement, May 10, 1:25 AM CDT, 48 minutes before

Special Weather Statement
National Weather Service Amarillo TX
125 AM CDT WED MAY 10 2017

OKZ003-TXZ004-100700-
Beaver OK-Ochiltree TX-
125 AM CDT WED MAY 10 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN BEAVER AND NORTH
CENTRAL OCHILTREE COUNTIES UNTIL 200 AM CDT...

At 124 AM CDT, Doppler radar was tracking a strong thunderstorm 6
miles south of Bryans Corner, or 9 miles north of Perryton, moving
northeast at 35 mph.

Dime size hail will be possible with this storm.

Locations impacted include...
Bryans Corner, Balko and Boyd.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take shelter in a sturdy building if threatening weather approaches.

&&

A severe thunderstorm watch remains in effect until 700 AM CDT for
the Panhandle of Oklahoma...and the Panhandle of Texas.

LAT...LON 3640 10075 3650 10094 3682 10084 3671 10045
TIME...MOT...LOC 0624Z 209DEG 30KT 3653 10080

Ward

Special weather statement, May 10, 1:54 AM CDT, 19 minutes before

Special Weather Statement
National Weather Service Amarillo TX
154 AM CDT WED MAY 10 2017

TXZ017-100730-
Randall TX-
154 AM CDT WED MAY 10 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN RANDALL COUNTY UNTIL 230
AM CDT...

At 154 AM CDT, Doppler radar was tracking a strong thunderstorm 7
miles west of Happy, or 16 miles south of Canyon, moving northeast at
35 mph.

Nickel size hail will be possible with this storm.

Locations impacted include...
Canyon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take shelter in a sturdy building if threatening weather approaches.

&&

A severe thunderstorm watch remains in effect until 700 AM CDT for
the Panhandle of Texas.

LAT...LON 3475 10212 3504 10208 3492 10169 3475 10181
TIME...MOT...LOC 0654Z 209DEG 30KT 3475 10198

Ward

The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 7:12 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith	63 min
May 9, 8:10 PM CDT	Severe Thunderstorm Warning	AMA	Dallam	80 min
May 9, 8:13 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith	62 min
May 9, 8:15 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith	60 min
May 9, 8:25 PM CDT	Tornado Warning	AMA	Deaf Smith	20 min
May 9, 9:00 PM CDT	Areal Flood Advisory	AMA	Deaf Smith	3 hr
May 9, 9:13 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith	62 min
May 9, 9:15 PM CDT	Special Weather Statement	AMA	Oldham	30 min
May 9, 9:39 PM CDT	Special Weather Statement	AMA	Deaf Smith	36 min
May 9, 9:46 PM CDT	Special Weather Statement	AMA	Hartley	29 min
May 9, 9:47 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Oldham	58 min
May 9, 10:27 PM CDT	Special Weather Statement	AMA	Oldham	33 min
May 9, 10:29 PM CDT	Special Weather Statement	AMA	Deaf Smith	31 min
May 9, 10:47 PM CDT	Special Weather Statement	AMA	Randall	43 min
May 9, 11:32 PM CDT	Special Weather Statement	AMA	Randall	43 min
May 9, 11:37 PM CDT	Special Weather Statement	AMA	Hartley	38 min
May 10, 12:02 AM CDT	Special Weather Statement	AMA	Deaf Smith	28 min
May 10, 1:07 AM CDT	Special Weather Statement	AMA	Armstrong	23 min
May 10, 1:54 AM CDT	Special Weather Statement	AMA	Randall	36 min
May 10, 2:25 AM CDT	Special Weather Statement	AMA	Deaf Smith	35 min
May 10, 2:29 AM CDT	Special Weather Statement	AMA	Armstrong	31 min
May 10, 2:42 AM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Randall	33 min
May 10, 2:49 AM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Donley, Gray	41 min
May 10, 3:08 AM CDT	Tornado Warning	AMA	Armstrong, Donley	22 min
May 10, 3:15 AM CDT	Special Weather Statement	AMA	Armstrong	30 min
May 10, 3:29 AM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Donley, Gray	61 min
May 10, 3:37 AM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Randall	38 min
May 10, 4:04 AM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Potter, Randall	42 min
May 10, 4:06 AM CDT	Tornado Warning	AMA	Gray	24 min
May 10, 4:28 AM CDT	Severe Thunderstorm Warning	AMA	Gray, Hemphill, Roberts, Wheeler	62 min
May 10, 4:52 AM CDT	Special Weather Statement	AMA	Carson	23 min
May 10, 5:28 AM CDT	Special Weather Statement	AMA	Hemphill	47 min
May 10, 5:32 AM CDT	Special Weather Statement	AMA	Gray, Roberts	43 min
May 10, 5:43 AM CDT	Severe Thunderstorm Warning	AMA	Hemphill	62 min
May 10, 6:01 AM CDT	Special Weather Statement	AMA	Hemphill, Roberts, Wheeler	29 min
May 10, 9:23 AM CDT	Special Weather Statement	AMA	Hemphill	52 min
May 10, 9:43 AM CDT	Special Weather Statement	AMA	Donley	62 min
May 10, 10:56 AM CDT	Special Weather Statement	AMA	Ochiltree, Roberts	64 min
May 10, 3:42 PM CDT	Special Weather Statement	AMA	Moore	33 min
May 10, 3:51 PM CDT	Severe Thunderstorm Warning	AMA	Moore, Potter	54 min
May 10, 3:54 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Randall	20 min
May 10, 3:58 PM CDT	Special Weather Statement	AMA	Randall	32 min
May 10, 4:15 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Potter	45 min
May 10, 4:48 PM CDT	Severe Thunderstorm Warning	AMA	Sherman	47 min
May 10, 4:57 PM CDT	Severe Thunderstorm Warning	AMA	Donley	63 min
May 10, 4:59 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Hutchinson, Moore, Potter	45 min
May 10, 5:32 PM CDT	Severe Thunderstorm Warning	AMA	Collingsworth	42 min
May 10, 6:16 PM CDT	Special Weather Statement	AMA	Collingsworth	29 min
May 10, 6:33 PM CDT	Special Weather Statement	AMA	Moore	27 min
May 10, 6:58 PM CDT	Special Weather Statement	AMA	Donley	32 min

Nearby

Severe Thunderstorm Warnings in Texas, 2017 Every severe thunderstorm warning 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.