Alert archive / Texas / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 72, NWS San Angelo, TX

April 30, 2019Haskell County, Throckmorton County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Apr 30, 2019, 7:10 PM CDT for Haskell County, Throckmorton County, Texas. It was in force for 50 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 30, 2019, 7:10 PM CDT (00:10 UTC)
Expired: Apr 30, 2019, 8:00 PM CDT
In force: 50 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Haskell County, TX, Throckmorton County, TX

The radar

The Dyess AFB radar (KDYX), 74 km from the middle of the area, began a volume at 00:11 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.

Issued	Product	Office	Lasted
Apr 30, 4:26 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 0.2 hours before the alert went out and 296 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: 65 J/kg
Mixed-layer CIN: -282 J/kg
Mixed-layer LCL: 862 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 129 m²/s²
0-3 km storm-relative helicity: 139 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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 San Angelo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 30, 6:27 PM CDT, 43 minutes earlier.

Area forecast discussion, Apr 30, 6:27 PM CDT, 43 minutes before

Area Forecast Discussion
National Weather Service San Angelo TX
627 PM CDT Tue Apr 30 2019

.AVIATION...
/00Z TAFS/

Scattered thunderstorms are expected to continue this evening.
This activity will clear out after midnight before MVFR ceilings
return Wednesday morning. Some rain showers are possible Wednesday
morning as well across KJCT, KSOA, and KBBD.

&&

.PREV DISCUSSION... /issued 236 PM CDT Tue Apr 30 2019/

SHORT TERM...
(Tonight and Tomorrow)

Scattered thunderstorms are possible this afternoon and evening
across West Central Texas. In fact, a couple of these
thunderstorms could be rather strong to severe. Large hail and
damaging winds are the main concerns, however, a tornado is still
possible (tornado chances are low though). The Big Country appears
to have the best chance of seeing such severe thunderstorm
activity.

For tomorrow, rain may start up again early tomorrow morning
before moving off to the east. Then, additional thunderstorms may
develop tomorrow afternoon and evening. Some strong to severe
storms may be possible yet again with the same hazards as we
expect today.

41

LONG TERM...
(Wednesday night through next Tuesday)

No significant changes were needed to the general thinking for the
long term forecast. Southwest flow aloft, along with plenty of low
level moisture and periodic boundaries in the area will allow for
periods of showers and thunderstorms, mainly during the afternoon
and evening, to affect the area into early next week. Medium to long
range models generally agree on timing of upper level disturbances
moving across the area tomorrow morning, and again Thursday night
into Friday. However, as was mentioned in the previous discussion,
exactly where the best chances for precipitation will occur will be
dependent on mesoscale interactions, and if/where any boundaries are
able to set up across the area. A cold front is expected to move
into the area Thursday afternoon, then stall near our forecast area
through Friday. This boundary, along with a more pronounced
shortwave moving through Thursday night into Friday argues for
slightly more confidence in better coverage of precipitation from
Thursday night into Friday. Weak upper level ridging over the
weekend still argues for generally drier conditions Saturday and
Sunday. Early next week, southwest flow resumes, bringing in
additional rain chances. Considering this is beyond Day 6,
confidence is low in any model solution at this time range.

20

&&

.PRELIMINARY POINT TEMPS/POPS...
Abilene 	 81  66  82  63 /  40  30  50  20
San Angelo 	 85  63  84  61 /  40  40  60  10
Junction 	 81  66  82  63 /  40  40  70  30
Brownwood 	 79  65  77  62 /  40  40  70  30
Sweetwater 	 82  63  84  62 /  30  20  20  10
Ozona      	 84  64  82  60 /  40  40  50  20

&&

.SJT WATCHES/WARNINGS/ADVISORIES...
None.
&&

99/99/40

Hazardous weather outlook, Apr 30, 2:30 PM CDT, 4 hours 40 minutes before

Hazardous Weather Outlook
National Weather Service San Angelo TX
230 PM CDT Tue Apr 30 2019

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-011930-
Fisher-Nolan-Sterling-Coke-Runnels-Irion-Tom Green-Concho-
Crockett-Schleicher-Sutton-Haskell-Throckmorton-Jones-Shackelford-
Taylor-Callahan-Coleman-Brown-McCulloch-San Saba-Menard-Kimble-
Mason-
230 PM CDT Tue Apr 30 2019

This Hazardous Weather Outlook is for portions of west central
Texas.

.DAY ONE...This Afternoon and Tonight

A few strong to severe thunderstorms are possible this afternoon
and evening. Large hail, damaging winds, and cloud to ground
lightning will be the main hazards with these storms. However, an
isolated tornado cannot be ruled out.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Thunderstorms are possible through the remainder of the week,
mainly during the afternoon and evening hours. A few storms may be
strong to severe. Large hail and damaging winds are the primary hazards.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated at this time.

In the hours before

Local storm report, Apr 30, 5:56 PM CDT, 1 hour 14 minutes before

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Local storm report, Apr 30, 6:05 PM CDT, 1 hour 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
605 PM CDT TUE APR 30 2019

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

0604 PM     HAIL             20 W OZONA              30.71N 101.54W
04/30/2019  E1.75 INCH       CROCKETT           TX   PUBLIC

            TRUCKER REPORTED GOLF BALL HAIL ON I-10.

&&

AW

Local storm report, Apr 30, 6:46 PM CDT, 24 minutes before

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Special weather statement, Apr 30, 6:53 PM CDT, 17 minutes before

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Local storm report, Apr 30, 6:59 PM CDT, 11 minutes before

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Local storm report, Apr 30, 7:01 PM CDT, 9 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 30, 7:15 PM CDT	Severe Thunderstorm Warning	SJT	Crockett, Schleicher, Sutton	45 min
Apr 30, 7:48 PM CDT	Severe Thunderstorm Warning	SJT	Schleicher, Sutton	42 min
Apr 30, 7:56 PM CDT	Severe Thunderstorm Warning	SJT	Throckmorton	31 min
Apr 30, 8:02 PM CDT	Special Weather Statement	SJT	Irion	43 min
Apr 30, 8:30 PM CDT	Special Weather Statement	SJT	Sutton	30 min
May 1, 1:08 PM CDT	Special Weather Statement	SJT	Throckmorton	52 min
May 1, 1:17 PM CDT	Special Weather Statement	SJT	Haskell	43 min
May 1, 1:35 PM CDT	Tornado Warning Tornado observed	SJT	Throckmorton	25 min
May 1, 1:42 PM CDT	Severe Thunderstorm Warning	SJT	Haskell, Throckmorton	48 min
May 1, 1:53 PM CDT	Tornado Warning	SJT	Throckmorton	22 min
May 1, 1:58 PM CDT	Tornado Warning	SJT	Haskell	32 min
May 1, 2:24 PM CDT	Severe Thunderstorm Warning	SJT	Haskell, Throckmorton	51 min
May 1, 2:36 PM CDT	Tornado Warning	SJT	Haskell, Throckmorton	24 min
May 1, 2:58 PM CDT	Severe Thunderstorm Warning	SJT	Haskell, Throckmorton	47 min
May 1, 3:08 PM CDT	Tornado Warning	SJT	Haskell, Throckmorton	37 min
May 1, 3:11 PM CDT	Areal Flood Advisory	SJT	Haskell	3 hr
May 1, 3:28 PM CDT	Areal Flood Advisory	SJT	Throckmorton	2 hr
May 1, 3:39 PM CDT	Tornado Warning	SJT	Throckmorton	36 min
May 1, 4:10 PM CDT	Tornado Warning	SJT	Throckmorton	35 min
May 1, 4:30 PM CDT	Severe Thunderstorm Warning	SJT	Haskell	45 min
May 1, 4:34 PM CDT	Severe Thunderstorm Warning	SJT	Fisher, Nolan	41 min
May 1, 4:46 PM CDT	Severe Thunderstorm Warning	SJT	Haskell, Throckmorton	44 min
May 1, 4:50 PM CDT	Tornado Warning	SJT	Haskell, Throckmorton	25 min
May 1, 4:57 PM CDT	Areal Flood Warning	SJT	Haskell, Throckmorton	6 hr
May 1, 5:08 PM CDT	Tornado Warning	SJT	Haskell, Throckmorton	37 min
May 1, 5:11 PM CDT	Special Weather Statement	SJT	Taylor	49 min
May 1, 5:38 PM CDT	Tornado Warning	SJT	Haskell, Shackelford, Throckmorton	22 min
May 1, 5:47 PM CDT	Special Weather Statement	SJT	Haskell	43 min
May 1, 5:56 PM CDT	Tornado Warning	SJT	Haskell, Shackelford, Throckmorton	34 min
May 1, 6:02 PM CDT	Severe Thunderstorm Warning	SJT	Haskell, Throckmorton	43 min
May 1, 6:06 PM CDT	Special Weather Statement	SJT	Nolan	24 min
May 1, 6:26 PM CDT	Tornado Warning	SJT	Throckmorton	34 min
May 1, 6:36 PM CDT	Severe Thunderstorm Warning	SJT	Haskell	39 min
May 1, 6:55 PM CDT	Severe Thunderstorm Warning	SJT	Haskell, Shackelford, Throckmorton	50 min

Nearby

Severe Thunderstorm Warnings in Texas, 2019 Every severe thunderstorm warning in 2019

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.