Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 79, NWS Amarillo, TX

May 17, 2021Ochiltree County, Roberts County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at May 17, 2021, 5:16 PM CDT for Ochiltree County, Roberts County, Texas. It was in force for 59 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 17, 2021, 5:16 PM CDT (22:16 UTC)
Expired
May 17, 2021, 6:15 PM CDT
In force
59 min
Issued by
NWS Amarillo, TX
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Ochiltree County, TX, Roberts County, TX

The radar

The Amarillo radar (KAMA), 113 km from the middle of the area, began a volume at 22:17 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 watch it was issued in

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

IssuedProductOfficeLasted
May 17, 2:39 PM CDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 10.3 hours before the alert went out and 113 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-pSkew-T log-p diagram, Amarillo Airport, TX at 12:00Z on 2021-05-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Amarillo Airport, TX at 12:00Z on 2021-05-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -81 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1522 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
-81 m²/s²
0-3 km storm-relative helicity
24 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

043 
WUUS54 KAMA 172216
SVRAMA
TXC357-393-172315-
/O.NEW.KAMA.SV.W.0079.210517T2216Z-210517T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Amarillo TX
516 PM CDT Mon May 17 2021

The National Weather Service in Amarillo has issued a

* Severe Thunderstorm Warning for...
  Northern Roberts County in the Panhandle of Texas...
  Southern Ochiltree County in the Panhandle of Texas...

* Until 615 PM CDT.

* At 515 PM CDT, a severe thunderstorm was located 17 miles southeast
  of Spearman, moving north at 20 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Wolf Creek Park, Waka and Farnsworth. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3574 10086 3591 10107 3604 10109 3635 10108
      3625 10055 3586 10054
TIME...MOT...LOC 2215Z 195DEG 19KT 3600 10100 

HAIL...1.00IN
WIND...60MPH
 
$$

Guerrero
1 follow-up statement
829 
WWUS54 KAMA 172246
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
546 PM CDT Mon May 17 2021

TXC357-172255-
/O.CAN.KAMA.SV.W.0079.000000T0000Z-210517T2315Z/
Ochiltree TX-
546 PM CDT Mon May 17 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN OCHILTREE COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
the Panhandle of Texas.

LAT...LON 3574 10086 3591 10107 3603 10109 3605 10108
      3606 10055 3586 10054
TIME...MOT...LOC 2245Z 247DEG 16KT 3588 10084 

$$

TXC393-172315-
/O.CON.KAMA.SV.W.0079.000000T0000Z-210517T2315Z/
Roberts TX-
546 PM CDT Mon May 17 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR NORTHERN ROBERTS COUNTY...

At 545 PM CDT, a severe thunderstorm was located 17 miles northwest
of Miami, moving east at 20 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

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

This severe thunderstorm will remain over mainly rural areas of
northern Roberts County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3574 10086 3591 10107 3603 10109 3605 10108
      3606 10055 3586 10054
TIME...MOT...LOC 2245Z 247DEG 16KT 3588 10084 

HAIL...1.00IN
WIND...60MPH
 
$$

Guerrero

The office that day

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

IssuedProductOfficeCountiesLasted
May 16, 7:01 PM CDTSevere Thunderstorm WarningAMADeaf Smith, Oldham14 min
May 16, 7:06 PM CDTSevere Thunderstorm WarningAMACarson, Potter54 min
May 16, 7:15 PM CDTFlash Flood WarningAMARandall5 hr
May 16, 7:20 PM CDTSevere Thunderstorm WarningAMADonley55 min
May 16, 7:35 PM CDTSevere Thunderstorm WarningAMAArmstrong, Randall55 min
May 16, 7:44 PM CDTSevere Thunderstorm WarningAMARandall61 min
May 16, 7:46 PM CDTSevere Thunderstorm WarningAMACarson, Potter59 min
May 16, 7:58 PM CDTSevere Thunderstorm WarningAMADallam, Hartley, Sherman62 min
May 16, 8:13 PM CDTSevere Thunderstorm WarningAMADonley62 min
May 16, 8:47 PM CDTSevere Thunderstorm WarningAMACarson, Oldham, Potter43 min
May 16, 9:08 PM CDTAreal Flood AdvisoryAMADonley3 hr
May 16, 9:19 PM CDTSevere Thunderstorm WarningAMASherman41 min
May 16, 11:37 PM CDTSpecial Weather StatementAMAOldham23 min
May 16, 11:40 PM CDTAreal Flood AdvisoryAMAPotter, Randall3 hr
May 17, 12:06 AM CDTSpecial Weather StatementAMAPotter24 min
May 17, 12:12 AM CDTSpecial Weather StatementAMAOldham33 min
May 17, 12:16 AM CDTAreal Flood AdvisoryAMARandall3 hr
May 17, 12:35 AM CDTSpecial Weather StatementAMARandall25 min
May 17, 12:45 AM CDTSpecial Weather StatementAMAPotter30 min
May 17, 12:46 AM CDTSpecial Weather StatementAMAPotter29 min
May 17, 1:02 AM CDTSpecial Weather StatementAMARandall28 min
May 17, 2:58 PM CDTFlash Flood WatchAMAArmstrong, Carson, Collingsworth, Deaf Smith, Donley, Gray and 4 more7 hr
May 17, 4:47 PM CDTSpecial Weather StatementAMAOldham43 min
May 17, 5:48 PM CDTSpecial Weather StatementAMAHartley, Oldham57 min
May 17, 5:50 PM CDTSevere Thunderstorm WarningAMAHartley, Oldham55 min
May 17, 6:14 PM CDTSevere Thunderstorm WarningAMARoberts41 min
May 17, 6:28 PM CDTSevere Thunderstorm WarningAMADeaf Smith, Randall62 min
May 17, 6:33 PM CDTTornado WarningAMAHartley, Oldham19 min
May 17, 6:42 PM CDTSevere Thunderstorm WarningAMAHartley, Oldham93 min
May 17, 6:54 PM CDTSevere Thunderstorm WarningAMAArmstrong, Randall66 min

Nearby

Severe Thunderstorm Warnings in Texas, 2021Every severe thunderstorm warning in 2021

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.