Alert archive / Texas / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 19, NWS Amarillo, TX

May 7, 2020Collingsworth County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at May 7, 2020, 5:19 PM CDT for Collingsworth County, Texas. It was in force for 41 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 7, 2020, 5:19 PM CDT (22:19 UTC)
Expired
May 7, 2020, 6:00 PM CDT
In force
41 min
Issued by
NWS Amarillo, TX
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Collingsworth County, TX

The radar

The Amarillo radar (KAMA), 134 km from the middle of the area, began a volume at 22:22 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 7, 4:45 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 10.3 hours before the alert went out and 263 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, Norman, OK at 12:00Z on 2020-05-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Norman, OK at 12:00Z on 2020-05-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 135 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1907 m above ground
0-6 km bulk shear
67 kt
0-1 km storm-relative helicity
135 m²/s²
0-3 km storm-relative helicity
273 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 7, 3:58 PM CDT, 1 hour 21 minutes earlier.

Area forecast discussion, May 7, 3:58 PM CDT, 1 hour 21 minutes before
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Hazardous weather outlook, May 7, 4:53 PM CDT, 26 minutes before
Hazardous Weather Outlook
National Weather Service Amarillo TX
453 PM CDT Thu May 7 2020

OKZ001>003-TXZ001>020-317-081000-
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-
453 PM CDT Thu May 7 2020

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

.DAY ONE...Tonight.

Severe storms are possible this afternoon across the eastern
Panhandles. Expected hazards include large hail, damaging winds,
and possibly a tornado. The greater chance for severe weather is
across the southeastern Texas Panhandle, where a Severe
Thunderstorm Watch is in effect until 10 PM CDT.

Critical fire weather conditions will continue across the
southwestern parts of the Texas Panhandle this evening. A Red Flag
Warning remains in effect through 9PM CDT for the southwestern
Texas Panhandle.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Thunderstorms are possible Sunday night through Tuesday night.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed this evening and tonight. Please
relay any information about observed severe weather to the NWS
while following all local, state and CDC guidelines.

Area fire managers and emergency officials should be alert for
critical Fire Weather conditions this evening.

The office that day

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

IssuedProductOfficeCountiesLasted
May 7, 4:18 AM CDTRed Flag WarningAMADallam, Deaf Smith, Hartley, Oldham17 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2020Every severe thunderstorm warning in 2020

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.