Alert archive / Texas / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 16, NWS Amarillo, TX

April 22, 20206 counties in Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Apr 22, 2020, 3:51 AM CDT for 6 counties in Texas. It was in force for 54 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: Apr 22, 2020, 3:51 AM CDT (08:51 UTC)
Expired: Apr 22, 2020, 4:45 AM CDT
In force: 54 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Hail: 1.5 in
Wind: 50.0 mph

Counties Hansford County, TX, Hemphill County, TX, Hutchinson County, TX, Lipscomb County, TX, Ochiltree County, TX, Roberts County, TX

The radar

The Amarillo radar (KAMA), 122 km from the middle of the area, began a volume at 08:51 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, 8.9 hours before the alert went out and 122 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: 262 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 2114 m above ground
0-6 km bulk shear: 76 kt
0-1 km storm-relative helicity: 94 m²/s²
0-3 km storm-relative helicity: 227 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.5

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 Apr 22, 2:59 AM CDT, 52 minutes earlier.

Area forecast discussion, Apr 22, 2:59 AM CDT, 52 minutes before

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Hazardous weather outlook, Apr 22, 2:23 AM CDT, 1 hour 28 minutes before

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In the hours before

Local storm report, Apr 21, 10:24 PM CDT, 5 hours 27 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE AMARILLO TX
1024 PM CDT TUE APR 21 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0503 PM     HAIL             4 SSW GRUVER            36.21N 101.44W
04/21/2020  E0.75 INCH       HANSFORD           TX   PUBLIC

            REPORT RECEIVED VIA MPING.

0545 PM     HAIL             5 S CONLEN              36.16N 102.24W
04/21/2020  E0.75 INCH       DALLAM             TX   TRAINED SPOTTER

            TRAINED SPOTTER REPORTED DIME SIZE HAIL ON TWITTER.

0648 PM     HAIL             4 S CANADIAN            35.85N 100.40W
04/21/2020  E1.25 INCH       HEMPHILL           TX   STORM CHASER

            COPIOUS AMOUNTS OF HALF DOLLAR SIZE HAIL REPORTED BY A
            STORM CHASER ON HIGHWAY 60 SOUTH OF CANADIAN.

0655 PM     HAIL             5 S CANADIAN            35.84N 100.40W
04/21/2020  E1.00 INCH       HEMPHILL           TX   STORM CHASER

0731 PM     HAIL             7 SSW LAKE MARVIN       35.79N 100.20W
04/21/2020  E1.00 INCH       HEMPHILL           TX   TRAINED SPOTTER

0749 PM     HAIL             10 S LAKE MARVIN        35.75N 100.16W
04/21/2020  E1.75 INCH       HEMPHILL           TX   STORM CHASER

0803 PM     HAIL             10 ENE LORA             35.77N 100.39W
04/21/2020  E1.00 INCH       HEMPHILL           TX   FIRE DEPT/RESCUE

&&

EVENT NUMBER AMA2000252 AMA2000253 AMA2000254 AMA2000255 AMA2000256
AMA2000257 AMA2000258

Schneider

Special weather statement, Apr 22, 1:31 AM CDT, 2 hours 20 minutes before

Special Weather Statement
National Weather Service Amarillo TX
131 AM CDT Wed Apr 22 2020

TXZ006-011-220700-
Hartley TX-Oldham TX-
131 AM CDT Wed Apr 22 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN OLDHAM AND
SOUTHEASTERN HARTLEY COUNTIES UNTIL 200 AM CDT...

At 130 AM CDT, Doppler radar was tracking a strong thunderstorm 17
miles north of Adrian, or 21 miles northwest of Vega, moving
northeast at 35 mph.

Nickel size hail will be possible with this storm.

Locations impacted include...
Channing and Boys Ranch.

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.

&&

LAT...LON 3595 10217 3550 10217 3522 10280 3557 10299
TIME...MOT...LOC 0630Z 239DEG 31KT 3552 10261

Ferguson

Special weather statement, Apr 22, 2:30 AM CDT, 1 hour 21 minutes before

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Local storm report, Apr 22, 3:37 AM CDT, 14 minutes before

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Local storm report, Apr 22, 3:39 AM CDT, 12 minutes before

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Special weather statement, Apr 22, 3:41 AM CDT, 10 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 21, 7:06 PM CDT	Severe Thunderstorm Warning	AMA	Hemphill, Roberts	54 min
Apr 21, 7:11 PM CDT	Severe Thunderstorm Warning	AMA	Hemphill	49 min
Apr 21, 7:39 PM CDT	Areal Flood Advisory	AMA	Hemphill, Roberts	111 min
Apr 21, 7:54 PM CDT	Severe Thunderstorm Warning	AMA	Hemphill, Roberts, Wheeler	66 min
Apr 21, 9:59 PM CDT	Special Weather Statement	AMA	Lipscomb	46 min
Apr 22, 1:31 AM CDT	Special Weather Statement	AMA	Oldham	29 min
Apr 22, 1:55 AM CDT	Severe Thunderstorm Warning	AMA	Hartley, Moore, Oldham, Potter	50 min
Apr 22, 2:43 AM CDT	Severe Thunderstorm Warning	AMA	Hutchinson, Moore	47 min
Apr 22, 3:15 AM CDT	Severe Thunderstorm Warning	AMA	Hutchinson, Moore	60 min
Apr 22, 3:41 AM CDT	Special Weather Statement	AMA	Hemphill	49 min
Apr 22, 4:12 AM CDT	Severe Thunderstorm Warning	AMA	Gray, Roberts	48 min
Apr 22, 4:44 AM CDT	Special Weather Statement	AMA	Lipscomb	61 min
Apr 22, 5:02 AM CDT	Severe Thunderstorm Warning	AMA	Hemphill, Lipscomb, Ochiltree, Roberts	37 min
Apr 22, 1:31 PM CDT	Special Weather Statement	AMA	Hemphill	59 min
Apr 22, 2:15 PM CDT	Special Weather Statement	AMA	Wheeler	60 min
Apr 22, 6:08 PM CDT	Special Weather Statement	AMA	Oldham	67 min
Apr 22, 2:30 AM CDT	Special Weather Statement	AMA	Texas	60 min

Nearby

Severe Thunderstorm Warnings in Texas, 2020 Every 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.