Alert archive / Texas / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 21, NWS Corpus Christi, TX

April 9, 2020Webb County, Texas

NWS Corpus Christi, TX issued this severe thunderstorm warning at Apr 9, 2020, 3:27 PM CDT for Webb County, Texas. It was in force for 18 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: Apr 9, 2020, 3:27 PM CDT (20:27 UTC)
Expired: Apr 9, 2020, 3:45 PM CDT
In force: 18 min
Issued by: NWS Corpus Christi, TX
Area: Storm-based polygon
Hail: 1.75 in
Wind: 60.0 mph

County Webb County, TX

The radar

The Laughlin AFB radar (KDFX), 131 km from the middle of the area, began a volume at 20:30 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 9, 2:47 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 8.5 hours before the alert went out and 166 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: 2030 J/kg
Mixed-layer CIN: -145 J/kg
Mixed-layer LCL: 1296 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 86 m²/s²
0-3 km storm-relative helicity: 37 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

As transmitted.

333 
WUUS54 KCRP 092027
SVRCRP
TXC479-092045-
/O.NEW.KCRP.SV.W.0021.200409T2027Z-200409T2045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Corpus Christi TX
327 PM CDT Thu Apr 9 2020

The National Weather Service in Corpus Christi has issued a

* Severe Thunderstorm Warning for...
  North central Webb County in south central Texas...

* Until 345 PM CDT.

* At 326 PM CDT, a severe thunderstorm was located 7 miles northeast
  of Catarina, or 10 miles south of Big Wells, moving northeast at 30
  mph.

  HAZARD...Golf ball size hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees.

* This severe thunderstorm will remain over mainly rural areas of
  north central Webb County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 2820 9999 2820 9946 2806 9988
TIME...MOT...LOC 2026Z 235DEG 25KT 2843 9952 

HAIL...1.75IN
WIND...60MPH
 
$$

JCP

1 follow-up statement

593 
WWUS54 KCRP 092032
SVSCRP

Severe Weather Statement
National Weather Service Corpus Christi TX
332 PM CDT Thu Apr 9 2020

TXC479-092045-
/O.CON.KCRP.SV.W.0021.000000T0000Z-200409T2045Z/
Webb TX-
332 PM CDT Thu Apr 9 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM CDT
FOR NORTH CENTRAL WEBB COUNTY...

At 332 PM CDT, a severe thunderstorm was located 7 miles south of Las
Vegas, or 9 miles southeast of Big Wells, moving northeast at 30 mph.

HAZARD...Two inch hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

This severe thunderstorm will remain over mainly rural areas of north
central Webb County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 2820 9994 2820 9946 2809 9984
TIME...MOT...LOC 2032Z 235DEG 25KT 2844 9950 

HAIL...2.00IN
WIND...60MPH
 
$$

JCP

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 9, 1:53 PM CDT	River Flood Warning	CRP	Calhoun, Refugio, Victoria	32 hr
Apr 9, 2:59 PM CDT	Severe Thunderstorm Warning	CRP	Webb	31 min
Apr 9, 3:43 PM CDT	Severe Thunderstorm Warning	CRP	Webb	34 min
Apr 9, 3:59 PM CDT	Areal Flood Advisory	CRP	Webb	61 min
Apr 9, 4:14 PM CDT	Special Weather Statement	CRP	La Salle	31 min
Apr 9, 5:01 PM CDT	Special Weather Statement	CRP	La Salle	29 min
Apr 9, 6:33 PM CDT	Severe Thunderstorm Warning	CRP	La Salle, Webb	42 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.