Alert archive / Texas / Special Weather Statements in 2017

Special Weather Statement, NWS Amarillo, TX

May 10, 2017Gray County, Roberts County, Texas

NWS Amarillo, TX issued this special weather statement at May 10, 2017, 5:32 AM CDT for Gray County, Roberts County, Texas. It was in force for 43 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, 5:32 AM CDT (10:32 UTC)
Expired: May 10, 2017, 6:15 AM CDT
In force: 43 min
Issued by: NWS Amarillo, TX

Counties Gray County, TX, Roberts County, TX

The radar

The Amarillo radar (KAMA), 80 km from the middle of the area, began a volume at 10:32 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 nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 10.5 hours before the alert went out and 80 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.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at May 10, 12:27 AM CDT, 5 hours 5 minutes earlier.

Area forecast discussion, May 10, 12:27 AM CDT, 5 hours 5 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, 13 hours 40 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 10, 2:25 AM CDT, 3 hours 7 minutes before

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

TXZ016-100800-
Deaf Smith TX-
225 AM CDT WED MAY 10 2017

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL DEAF SMITH COUNTY UNTIL
300 AM CDT...

At 223 AM CDT, Doppler radar was tracking an area of strong
thunderstorms 8 miles northwest of Summerfield, or 12 miles west of
Hereford, moving north at 35 mph.

Dime size hail will be possible with these storms.

Locations impacted include...
Hereford, Simms and Bootleg.

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 10288 3516 10277 3506 10217 3475 10239
TIME...MOT...LOC 0723Z 194DEG 31KT 3482 10262

Ward

Special weather statement, May 10, 2:29 AM CDT, 3 hours 3 minutes before

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

TXZ017-018-100800-
Randall TX-Armstrong TX-
229 AM CDT WED MAY 10 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN RANDALL AND
NORTHWESTERN ARMSTRONG COUNTIES UNTIL 300 AM CDT...

At 229 AM CDT, Doppler radar was tracking a strong thunderstorm 4
miles north of Palo Duro Canyon, or 12 miles east of Canyon, moving
northeast at 30 mph.

Nickel size hail will be possible with this storm.

Locations impacted include...
Washburn and Palo Duro 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 3497 10177 3518 10168 3518 10159 3514 10137
      3494 10168
TIME...MOT...LOC 0729Z 207DEG 27KT 3501 10170

Ward

Special weather statement, May 10, 3:15 AM CDT, 2 hours 17 minutes before

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

TXZ012-013-017-018-100845-
Potter TX-Randall TX-Carson TX-Armstrong TX-
315 AM CDT WED MAY 10 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN RANDALL...
NORTHWESTERN ARMSTRONG...SOUTHWESTERN CARSON AND SOUTHEASTERN POTTER
COUNTIES UNTIL 345 AM CDT...

At 315 AM CDT, Doppler radar was tracking a strong thunderstorm near
Lake Tanglewood, or 9 miles east of Canyon, moving northeast at 55
mph.

Nickel size hail will be possible with this storm.

Locations impacted include...
Amarillo, Lake Tanglewood, Washburn, Palo Duro Canyon, Timbercreek
Canyon and Pantex.

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 3489 10169 3495 10188 3540 10164 3528 10129
TIME...MOT...LOC 0815Z 206DEG 48KT 3501 10175

Ward

Special weather statement, May 10, 4:52 AM CDT, 40 minutes before

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

TXZ008-009-013-014-018-019-101015-
Gray TX-Hutchinson TX-Roberts TX-Donley TX-Carson TX-Armstrong TX-
452 AM CDT WED MAY 10 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN ARMSTRONG...EASTERN
CARSON...SOUTHEASTERN HUTCHINSON...WESTERN GRAY...SOUTHWESTERN
ROBERTS AND NORTHWESTERN DONLEY COUNTIES UNTIL 515 AM CDT...

At 452 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles northeast of Panhandle to 3 miles
northeast of Goodnight. Movement was northeast at 40 mph.

Dime size hail will be possible with these storms.

Locations impacted include...
Pampa, Panhandle, Claude, White Deer, Groom, Skellytown, Lake
Mcclellan, Kingsmill and Goodnight.

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 3589 10109 3528 10077 3493 10115 3510 10143
      3542 10140
TIME...MOT...LOC 0952Z 214DEG 36KT 3542 10132 3507 10113

Ward

Special weather statement, May 10, 5:28 AM CDT, 4 minutes before

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

TXZ010-015-101115-
Hemphill TX-Wheeler TX-
528 AM CDT WED MAY 10 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN WHEELER AND HEMPHILL
COUNTIES UNTIL 615 AM CDT...

At 527 AM CDT, Doppler radar was tracking a strong thunderstorm 5
miles northwest of Briscoe, or 16 miles east of Miami, moving
northeast at 30 mph.

Nickel size hail will be possible with this storm.

Locations impacted include...
Briscoe, Allison, New Mobeetie, Lake Marvin and Mobeetie.

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 700 AM CDT for
the Panhandle of Texas.

LAT...LON 3549 10043 3574 10050 3606 10007 3606 10000
      3564 10000
TIME...MOT...LOC 1027Z 227DEG 27KT 3563 10037

Ward

Special weather statement, May 10, 5:32 AM CDT, 0 minutes before

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

TXZ009-010-014-015-019-020-101115-
Hemphill TX-Gray TX-Wheeler TX-Roberts TX-Donley TX-Collingsworth TX-
532 AM CDT WED MAY 10 2017

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN WHEELER...GRAY...
NORTHWESTERN COLLINGSWORTH...ROBERTS...WESTERN HEMPHILL AND NORTHERN
DONLEY COUNTIES UNTIL 615 AM CDT...

At 531 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 9 miles north of Pampa to 3 miles northwest of
Howardwick. Movement was northeast at 40 mph.

Half inch hail and wind gusts up to 50 mph will be possible with
these storms.

Locations impacted include...
Pampa, Miami, Mclean, Lefors, Howardwick, Lake Mcclellan, Lora,
Alanreed, Codman, Kellerville and Greenbelt Lake.

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 3507 10109 3538 10097 3568 10109 3606 10059
      3606 10049 3510 10041 3494 10109
TIME...MOT...LOC 1031Z 217DEG 34KT 3569 10095 3507 10094

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, 2:13 AM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Randall	47 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, 5:43 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
May 9, 9:17 PM CDT	Severe Thunderstorm Warning	AMA	Cimarron, Texas	58 min
May 10, 1:25 AM CDT	Special Weather Statement	AMA	Beaver	35 min
May 10, 5:47 PM CDT	Special Weather Statement	AMA	Cimarron	28 min
May 10, 5:59 PM CDT	Severe Thunderstorm Warning	AMA	Cimarron, Texas	30 min

Nearby

Special Weather Statements in Texas, 2017 Every special weather statement 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.