Isolated thunderstorms formed near a boundary south of the Texas Hill Country during the afternoon of the 9th. The storms moved south toward the northern Brush Country by late in the evening.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS CRP wrote it up.
Isolated thunderstorms formed near a boundary south of the Texas Hill Country during the afternoon of the 9th. The storms moved south toward the northern Brush Country by late in the evening. Severe wind gusts were recorded near Cotulla.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Corpus Christi, TX wrote its last area forecast discussion before the first event at Jun 9, 8:02 PM CST, 2 hours 45 minutes earlier.
Area Forecast Discussion National Weather Service Corpus Christi TX 902 PM CDT Tue Jun 9 2020 .DISCUSSION... A late season cold front currently appears to be stalled just northwest and west of the CWA, but should slowly track across S TX. The frontal boundary is expected to exit the southern CWA between 10-13Z as it slowly moves southward. Tonight's forecast is not clear cut with respect to convection. The 00Z CRP sounding shows a very capped environment and PWATs of only 1.6 inches. Meso-scale models show convection developing along the cold front later tonight. Models indicate that deeper moisture (PWATs of around 2 inches) will advect ahead and along the bdry. Models also show the cap to weaken somewhat, mainly across the western CWA. Considering that models prog mid level instability and moisture to increase overnight, am expecting isolated to scattered elevated convection to develop overnight. Some storms may be strong with small hail and strong winds. Storms Prediction Center has the western portion of the CWA in a marginal risk of severe weather, but it would be isolated at best. The caveat to all of this is the strong cap and how much it will weaken. If it remains as strong as it is now, storms will have a difficult time developing. Therefore, no changes to the forecast for now. && .PREV DISCUSSION... /Issued 646 PM CDT Tue Jun 9 2020/ DISCUSSION... See aviation discussion below for the 00Z TAFs. AVIATION... VFR conditions this evening will become MVFR overnight. There is a chance for thunderstorms associated with a cold front late this evening across VCT, COT and LRD, and later overnight for ALI and CRP. Some storms may be strong, possibly severe with strong gusty winds and hail possible. Could see brief IFR conditions with any storms that move across a TAF site. Conditions expected to improve through mid morning Wed. Surface winds will be light and variable tonight, becoming northeast and gusty by early Wed morning. Winds expected to shift to the east by Wed afternoon. PREV DISCUSSION... /Issued 211 PM CDT Tue Jun 9 2020/ SHORT TERM (Tonight through Wednesday night)... A weak frontal boundary will push through later this evening and through the overnight hours, contributing to isolated to scattered showers and thunderstorms tonight. With CAPE values of 3500 to 4000 J/kg, some of the storms could be strong to severe. Behind the front, winds will shift to the northeast and east, bringing drier air back in over the area. Temperatures will remain warm tonight, but be much cooler Wednesday with highs in the low to mid 90s. LONG TERM (Thursday through Tuesday)... The long term forecast remains rather quiet as a upper level ridge builds into the region. Significantly drier air will filter into the region on Thursday with PWATs dropping down to around 0.5-0.75". A weak to moderate east-northeast wind will develop in the wake of today's boundary and persist through the end of the work week. Onshore flow will kick back in over the course of the weekend. Moisture will gradually increase and start to reach normal levels for mid June but with the ridge/subsidence in place, don't expect much in the way of precip. Temperatures will stay pretty steady through the weekend with highs in the upper 80s along the coast to the upper 90s out west. Lows will drop into the upper 60s across the Brush Country to the upper 70s along the immediate coast. MARINE... Weak to moderate flow will continue through tonight. Isolated showers and thunderstorms are possible late this evening through early Wednesday morning as a frontal boundary enters and crosses the coastal waters. A weak to moderate east-northeast wind will develop behind a passing boundary and persist across the area as we head into the weekend. Onshore flow will redevelop through the weekend with moisture gradually increasing. No precipitation is expected over the as we head into the weekend. && .PRELIMINARY POINT TEMPS/POPS... Corpus Christi 77 92 71 91 69 / 40 20 0 0 0 Victoria 73 93 67 94 66 / 30 10 0 0 0 Laredo 76 94 72 96 69 / 40 30 10 10 0 Alice 76 94 69 95 67 / 40 20 10 0 0 Rockport 78 93 76 92 75 / 40 10 0 0 0 Cotulla 73 96 67 98 67 / 30 0 0 0 0 Kingsville 77 92 71 95 69 / 40 20 10 0 0 Navy Corpus 79 90 78 90 76 / 40 20 10 10 0 && .CRP WATCHES/WARNINGS/ADVISORIES... TX...None. GM...None. && TE/81...SHORT TERM
Hazardous Weather Outlook National Weather Service Corpus Christi TX 559 AM CDT Tue Jun 9 2020 TXZ229>234-239>247-342>347-442-443-447-101100- La Salle-McMullen-Live Oak-Bee-Goliad-Victoria-Webb-Duval- Jim Wells-Inland Kleberg-Inland Nueces-Inland San Patricio- Coastal Aransas-Inland Refugio-Inland Calhoun-Coastal Kleberg- Coastal Nueces-Coastal San Patricio-Aransas Islands- Coastal Refugio-Coastal Calhoun-Kleberg Islands-Nueces Islands- Calhoun Islands- 559 AM CDT Tue Jun 9 2020 This hazardous weather outlook is for South Texas. .DAY ONE...Today and Tonight No hazardous weather is expected at this time. Isolated thunderstorms expected near the Rio Grande late this afternoon, and over all of South Texas tonight. A Heat Advisory is in effect for South Texas from noon until 7PM CDT today. A Coastal Flood Advisory is in effect today south of Port Aransas. .DAYS TWO THROUGH SEVEN...Wednesday through Monday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated. GMZ230-235-250-255-270-275-101100- Bays and Waterways from Baffin Bay to Port Aransas- Bays and Waterways from Port Aransas to Port O'Connor- Coastal waters from Baffin Bay to Port Aransas out 20 NM- Coastal waters from Port Aransas to Matagorda Ship Channel out 20 NM-Waters from Baffin Bay to Port Aransas from 20 to 60 NM- Waters from Port Aransas to Matagorda Ship Channel from 20 to 60 NM- 559 AM CDT Tue Jun 9 2020 This hazardous weather outlook is for the Middle Texas Coastal Waters. .DAY ONE...Today and Tonight Isolated thunderstorms expected over the Waters tonight. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Isolated thunderstorms expected over the Waters Wednesday morning. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated. 87
Special Weather Statement
National Weather Service Corpus Christi TX
1040 PM CDT Tue Jun 9 2020
TXZ229-100445-
La Salle-
1040 PM CDT Tue Jun 9 2020
...A STRONG THUNDERSTORM WILL AFFECT NORTH CENTRAL LA SALLE COUNTY...
At 1039 PM CDT, a strong thunderstorm was located near Dilley, moving
southeast at 10 mph.
Winds in excess of 40 mph and pea size hail are possible with this
storm.
Locations impacted include...
Millett, Gardendale and Los Angeles.
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 2864 9884 2840 9906 2857 9932 2864 9926
2865 9885
TIME...MOT...LOC 0339Z 316DEG 7KT 2870 9913
TESpecial Weather Statement National Weather Service Corpus Christi TX 1125 PM CDT Tue Jun 9 2020 TXZ229-100515- La Salle- 1125 PM CDT Tue Jun 9 2020 ...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN LA SALLE COUNTY... At 1124 PM CDT, a strong thunderstorm was located 7 miles northwest of Woodward, or 11 miles west of Dilley, moving south at 10 mph. Wind gusts up to 50 mph and half inch hail are possible with this storm. Locations impacted include... Cotulla and Woodward. LAT...LON 2839 9924 2842 9939 2864 9940 2864 9923 TIME...MOT...LOC 0424Z 010DEG 10KT 2864 9935 TE
Special Weather Statement
National Weather Service Corpus Christi TX
1144 PM CDT Tue Jun 9 2020
TXZ229-239-100530-
Webb-La Salle-
1144 PM CDT Tue Jun 9 2020
...A STRONG THUNDERSTORM WILL AFFECT NORTHERN WEBB AND WESTERN LA
SALLE COUNTIES...
At 1144 PM CDT, a strong thunderstorm was located near Cotulla,
moving south at 20 mph.
Winds in excess of 40 mph and half inch hail are possible with this
storm.
Locations impacted include...
Cotulla, Gardendale, Artesia Wells, Woodward and Chaparral Wildlife
Management Area.
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 2846 9900 2811 9911 2818 9947 2820 9946
2820 9940 2839 9939 2855 9934
TIME...MOT...LOC 0444Z 012DEG 16KT 2844 9918
TEThe Laughlin AFB radar (KDFX), 138 km away, was scanning. The volume nearest the first event began at 04:47 UTC.
1 thunderstorm wind. Local standard time, as filed.
Cotulla-La Salle County Airport ASOS measured a gust to 59 mph.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2020Every state in 2020This day in weather historyWarnings in Texas, June 2020
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 906056.