Alert archive / Texas / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 22, NWS Amarillo, TX
NWS Amarillo, TX issued this severe thunderstorm warning at May 13, 2018, 5:25 PM CDT for Collingsworth County, Donley County, Gray County, Texas. It was in force for 65 min. 2 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
- May 13, 2018, 5:25 PM CDT (22:25 UTC)
- Expired
- May 13, 2018, 6:30 PM CDT
- In force
- 65 min
- Issued by
- NWS Amarillo, TX
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 60.0 mph
Counties Collingsworth County, TX, Donley County, TX, Gray County, TX
The radar
The Amarillo radar (KAMA), 94 km from the middle of the area, began a volume at 22:28 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 | Remark |
|---|---|---|---|
| May 13, 5:30 PM CDT | HAIL 1 | Clarendon, TX | NICKEL TO QUARTER SIZE HAIL REPORTED AT CLARENDON COLLEGE. |
| May 13, 6:25 PM CDT | HAIL 1.25 | Alanreed, TX | HALF DOLLAR SIZE HAIL REPORTED ALONG I-40 IN ALANREED. |
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 2 storm reports to this severe thunderstorm warning; the first came 5 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 |
|---|---|---|---|
| May 13, 3:59 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Amarillo Airport, TX (KAMA), launched 12:00Z, 10.4 hours before the alert went out and 93 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.
- Mixed-layer CAPE
- 61 J/kg
- Mixed-layer CIN
- -288 J/kg
- Mixed-layer LCL
- 2990 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- -13 m²/s²
- 0-3 km storm-relative helicity
- 35 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
368
WUUS54 KAMA 132225
SVRAMA
TXC087-129-179-132330-
/O.NEW.KAMA.SV.W.0022.180513T2225Z-180513T2330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Amarillo TX
525 PM CDT SUN MAY 13 2018
The National Weather Service in Amarillo has issued a
* Severe Thunderstorm Warning for...
Southeastern Gray County in the Panhandle of Texas...
Northwestern Collingsworth County in the Panhandle of Texas...
Donley County in the Panhandle of Texas...
* Until 630 PM CDT
* At 525 PM CDT, a severe thunderstorm was located 5 miles east of
Greenbelt Lake, or 5 miles northeast of Clarendon, 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...
Clarendon, Mclean, Howardwick, Hedley, Lelia Lake, Lake Mcclellan,
Alanreed and Greenbelt Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3491 10108 3538 10081 3537 10055 3528 10054
3519 10054 3518 10052 3504 10030 3476 10078
TIME...MOT...LOC 2225Z 213DEG 27KT 3499 10082
HAIL...1.50IN
WIND...60MPH
$$
LFM1 follow-up statement
792
WWUS54 KAMA 132329
SVSAMA
Severe Weather Statement
National Weather Service Amarillo TX
629 PM CDT SUN MAY 13 2018
TXC087-129-179-132339-
/O.EXP.KAMA.SV.W.0022.000000T0000Z-180513T2330Z/
Gray TX-Collingsworth TX-Donley TX-
629 PM CDT SUN MAY 13 2018
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN GRAY...
NORTHWESTERN COLLINGSWORTH AND DONLEY COUNTIES WILL EXPIRE AT 630 PM
CDT...
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire.
A severe thunderstorm watch remains in effect until 1100 PM CDT for
the Panhandle of Texas.
LAT...LON 3491 10108 3538 10081 3537 10055 3528 10054
3519 10054 3518 10052 3504 10030 3476 10078
TIME...MOT...LOC 2329Z 213DEG 27KT 3537 10052
$$
LFMWhat 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 13, 3:32 PM CDT, 1 hour 53 minutes earlier.
Area forecast discussion, May 13, 3:32 PM CDT, 1 hour 53 minutes before
Area Forecast Discussion
National Weather Service Amarillo TX
332 PM CDT Sun May 13 2018
.DISCUSSION...
Although a stubborn stationary front will have a hard time making
up its mind whether it wants to be a cold front or warm front from
day to day throughout the forecast period with weak steering flow
aloft, that pesky front will bring us several chances of rainfall
throughout the week, so thats always good to see! Except that
forecasting temperatures along the front based off where it
decides to set up, especially across the northern Texas and
Oklahoma Panhandles will be tricky, as short term numerical data
are not in accord.
Current observations show temperatures well into the 90s across
the region with low Tds to the west and good low level moisture
and southerly flow with Tds in the 50s and 60s to the east ahead
of the dryline with a Cu field already trying to develop across
eastern areas and in the Texas south plains. Across the eastern
Panhandles, we will have the best chances of seeing strong and
severe thunderstorms likely starting after 21Z through the late
evening hours. Latest meso-analysis is showing good SBCAPE of
2500-4000 J/kg across the eastern Panhandles with mid level lapse
rates above 8 C/km. However, effective shear with these storms
are quite limited and with its uni-directional profile, linear
convection is expected overtime, especially going into the early
evening hours. Individual cells should develop along a line at
first which can produce hail size up to golf ball size as storms
further develop. Large hail may continue into the evening hours,
with the primary threat shifting to damaging winds as a forward
propagating complex of storms are expected, especially as we lose
daytime heating. Can not rule out a wet microburst potential as
inverted-V soundings are present which may mix down stronger winds
in local downdraft maxima in a PWAT environment of 1.0-1.3 inch
environment. In-conjunction with weak surface flow, training of
storms may lead to some flooding potential. Low temperatures this
evening as most of our region is displaced south of the stationary
front will remain quite warm in the low to mid 60s.
As previously mentioned, throughout the remainder of the
forecast, the positioning of the front will make temperatures
challenging to forecast throughout the period. Ahead of the front,
temperatures will remain above average and with southeasterly
flow ahead of the dryline across the central and western
Panhandles, depending on the day, best chances of diurnal
thunderstorms continue to be across the eastern Panhandles. Some
of the latest 13/12Z model and probabilistic data are showing the
front progressing into the southern parts of the TX Panhandle by
Tuesday afternoon, so this may be the only day of the week with
temperatures back to near average if it pans out. As a result,
more widespread precipitation chances will exist across the
Panhandles. Wednesday through the end of the forecast period shows
the front drifting back north and parking over the northern
combined Panhandles once again with areas ahead of the dryline in
the east with the best chances of diurnal precipitation. As we
approach the coming weekend, mid level winds will be stronger and
as an upper level disturbance approaches from the Four Corners
region, better chances of widespread precipitation with more
favorable upper level dynamics are possible. High temperatures
will remain above average.
Meccariello
&&
.FIRE WEATHER...
Elevated to critical fire weather conditions are expected into the
evening hours across the western Panhandles as low RH values
between 8-15% along with winds 15-20 MPH with gusts up to 30 MPH
are expected.
Elevated fire weather conditions are expected across the far
western Panhandles tomorrow and again on Friday and Saturday.
Meccariello
&&
.PRELIMINARY POINT TEMPS/POPS...
Amarillo TX 63 92 58 78 58 / 10 20 30 30 40
Beaver OK 66 86 59 78 60 / 20 20 40 30 50
Boise City OK 54 82 53 75 53 / 10 10 20 20 30
Borger TX 67 92 59 79 61 / 10 20 30 30 40
Boys Ranch TX 60 91 57 78 58 / 10 10 20 20 30
Canyon TX 62 93 59 80 58 / 10 20 20 30 30
Clarendon TX 65 90 62 81 61 / 30 40 40 30 40
Dalhart TX 54 88 55 76 55 / 10 10 20 20 30
Guymon OK 61 83 56 78 58 / 10 10 20 30 40
Hereford TX 60 92 57 80 57 / 10 20 20 20 30
Lipscomb TX 67 91 60 77 58 / 50 30 50 30 50
Pampa TX 64 87 58 76 58 / 20 30 30 30 40
Shamrock TX 67 92 63 81 62 / 60 40 50 30 40
Wellington TX 69 93 64 84 63 / 60 40 50 30 40
&&
.AMA Watches/Warnings/Advisories...
TX...Red Flag Warning until 9 PM CDT this evening for the following
zones: Dallam...Deaf Smith...Hartley...Oldham.
OK...Red Flag Warning until 9 PM CDT this evening for the following
zones: Cimarron.
&&
89/29Hazardous weather outlook, May 13, 3:40 PM CDT, 1 hour 45 minutes before
Hazardous Weather Outlook National Weather Service Amarillo TX 340 PM CDT Sun May 13 2018 OKZ001>003-TXZ001>020-317-141100- 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- 340 PM CDT Sun May 13 2018 This Hazardous Weather Outlook is for the Texas and Oklahoma Panhandles. .DAY ONE...This Afternoon and Tonight. Elevated to critical fire weather conditions are expected today across western portions of the Panhandles from noon until 9 pm this evening. Thunderstorms will be possible today across eastern portions of the combined Panhandles. Some storms may be strong to severe with hail and strong winds the main threats. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Thunderstorms will be possible Monday through Saturday across parts of the Oklahoma and Texas Panhandles. If storms develop, they will have the potential to become strong to marginally severe, with strong winds and hail the primary hazards. Elevated Fire Weather conditions may develop across the western Panhandles Monday, Friday, and Saturday. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated at this time. Area fire managers and emergency officials should be alert for elevated fire weather conditions Monday, Friday, and Saturday.
In the hours before
Special weather statement, May 13, 3:41 PM CDT, 1 hour 44 minutes before
Special Weather Statement National Weather Service Amarillo TX 341 PM CDT SUN MAY 13 2018 TXZ009-132130- Roberts TX- 341 PM CDT SUN MAY 13 2018 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL ROBERTS COUNTY UNTIL 430 PM CDT... At 341 PM CDT, Doppler radar was tracking a strong thunderstorm 11 miles north of Codman, or 12 miles northwest of Miami, moving northeast at 25 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 central Roberts County. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take shelter in a sturdy building if threatening weather approaches. && LAT...LON 3571 10077 3577 10094 3603 10085 3594 10055 TIME...MOT...LOC 2041Z 205DEG 20KT 3580 10082 Beat
Special weather statement, May 13, 4:21 PM CDT, 1 hour 4 minutes before
Special Weather Statement
National Weather Service Amarillo TX
421 PM CDT SUN MAY 13 2018
TXZ004-005-009-132200-
Ochiltree TX-Roberts TX-Lipscomb TX-
421 PM CDT SUN MAY 13 2018
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN LIPSCOMB...
NORTHEASTERN ROBERTS AND EASTERN OCHILTREE COUNTIES UNTIL 500 PM
CDT...
At 421 PM CDT, Doppler radar was tracking a strong thunderstorm 14
miles southwest of Wolf Creek Park, or 24 miles west of Canadian,
moving northeast at 45 mph.
Dime size hail and wind gusts up to 50 mph will be possible with this
storm.
Locations impacted include...
Lipscomb and Wolf Creek Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Take shelter in a sturdy building if threatening weather approaches.
&&
A severe thunderstorm watch remains in effect until 1100 PM CDT for
the Panhandle of Texas.
LAT...LON 3622 10021 3606 10051 3606 10054 3604 10054
3590 10080 3598 10095 3644 10070
TIME...MOT...LOC 2121Z 223DEG 40KT 3603 10079
BeatSpecial weather statement, May 13, 5:08 PM CDT, 17 minutes before
Special Weather Statement
National Weather Service Amarillo TX
508 PM CDT SUN MAY 13 2018
TXZ019-132300-
Donley TX-
508 PM CDT SUN MAY 13 2018
...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL DONLEY COUNTY UNTIL 600
PM CDT...
At 508 PM CDT, Doppler radar was tracking a strong thunderstorm 6
miles southwest of Clarendon, moving northeast at 30 mph.
Half inch hail and wind gusts up to 50 mph will be possible with this
storm.
Locations impacted include...
Clarendon, Hedley, Lelia Lake and Greenbelt Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Take shelter in a sturdy building if threatening weather approaches.
&&
A severe thunderstorm watch remains in effect until 1100 PM CDT for
the Panhandle of Texas.
LAT...LON 3482 10104 3514 10084 3495 10054 3491 10054
3475 10080 3475 10090
TIME...MOT...LOC 2208Z 225DEG 27KT 3486 10095
BeatLocal storm report, May 13, 5:23 PM CDT, 2 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
523 PM CDT SUN MAY 13 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0521 PM HAIL CLARENDON 34.94N 100.89W
05/13/2018 E0.88 INCH DONLEY TX LAW ENFORCEMENT
&&
EVENT NUMBER AMA1800004
15The office that day
Everything else NWS Amarillo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 12, 7:01 PM CDT | Special Weather Statement | AMA | Donley | 44 min |
| May 12, 7:27 PM CDT | Severe Thunderstorm Warning | AMA | Collingsworth, Donley | 36 min |
| May 13, 3:39 AM CDT | Red Flag Warning | AMA | Dallam, Deaf Smith, Hartley, Oldham | 17 hr |
| May 13, 3:41 PM CDT | Special Weather Statement | AMA | Roberts | 49 min |
| May 13, 4:21 PM CDT | Special Weather Statement | AMA | Ochiltree | 39 min |
| May 13, 4:37 PM CDT | Severe Thunderstorm Warning | AMA | Lipscomb, Ochiltree, Roberts | 83 min |
| May 13, 4:40 PM CDT | Severe Thunderstorm Warning | AMA | Ochiltree, Roberts | 73 min |
| May 13, 4:45 PM CDT | Severe Thunderstorm Warning | AMA | Lipscomb | 59 min |
| May 13, 5:08 PM CDT | Special Weather Statement | AMA | Donley | 52 min |
| May 13, 5:14 PM CDT | Severe Thunderstorm Warning | AMA | Hemphill, Lipscomb, Ochiltree, Roberts | 61 min |
| May 13, 5:15 PM CDT | Areal Flood Advisory | AMA | Ochiltree | 3 hr |
| May 13, 5:20 PM CDT | Severe Thunderstorm Warning | AMA | Collingsworth, Wheeler | 55 min |
| May 13, 5:56 PM CDT | Severe Thunderstorm Warning | AMA | Hemphill, Lipscomb, Ochiltree, Roberts | 79 min |
| May 13, 6:06 PM CDT | Severe Thunderstorm Warning | AMA | Hemphill | 36 min |
| May 13, 6:09 PM CDT | Special Weather Statement | AMA | Wheeler | 36 min |
| May 13, 6:15 PM CDT | Special Weather Statement | AMA | Wheeler | 45 min |
| May 13, 6:28 PM CDT | Severe Thunderstorm Warning | AMA | Donley, Gray, Wheeler | 62 min |
| May 13, 6:44 PM CDT | Areal Flood Advisory | AMA | Lipscomb | 8 hr |
| May 13, 6:53 PM CDT | Severe Thunderstorm Warning | AMA | Collingsworth, Donley, Wheeler | 67 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2018Every 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.