The combination of excessive heat, high humidity, an unstable atmosphere, weak upper level forcing, and perhaps the sea breeze allowed a severe thunderstorm to develop over west central Hidalgo county and track southeast before weakening north of McAllen. Wind damage occurred from a downburst, between McCook and Alton.
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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 BRO wrote it up.
The combination of excessive heat, high humidity, an unstable atmosphere, weak upper level forcing, and perhaps the sea breeze allowed a severe thunderstorm to develop over west central Hidalgo county and track southeast before weakening north of McAllen. Wind damage occurred from a downburst, between McCook and Alton.
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 Brownsville, TX wrote its last area forecast discussion before the first event at Jun 7, 2:45 PM CST, 23 minutes earlier.
Area Forecast Discussion
National Weather Service Brownsville TX
345 PM CDT Fri Jun 7 2019
...Dangerous Heat Expected Across Deep South Texas Again Saturday
and Sunday Afternoon...
.SHORT TERM (Now through Saturday Night): As of 2 pm...Brownsville
and McAllen have broken daily records, highs so far 104 BRO and
106 MFE. No let up in the heat is expected for Saturday as
atmosphere remains under an intense high pressure ridge,
continuing to build over Northern Mexico and Southern Texas.
Latest deterministic models remain consistent indicating
1000-500mb thicknesses topping out at 585-587dm and 850mb
temperatures peaking at 25-27C. Dry adiabatic heating of the 850mb
temp of 12-15C push temperatures well over the century mark
Saturday afternoon. With dew points remaining elevated heat
indices once again are likely to exceed 110 degrees for all areas
of Deep South Texas and the RGV. As is the case today, dew points
will be higher over the coastal counties resulting in higher heat
index values with forecast values once again exceeding 115 degrees
for at least a few hours. An excessive heat watch has been issued
for the three eastern counties to cover the potential dangerous
heat.
Some but not much relief develops this evening and overnight as
temperatures slowly fall with clear skies and light winds. Lows to
fall into the 80s before midnight bottoming out in the upper 70s to
lower 80s. Light patchy fog may develop around sunrise as the
surface layer becomes saturated due to the clear skies and high dew
point air. Visibilities may briefly drop below 3 miles.
.LONG TERM (Sunday through Friday): 500mb subtropical ridge across
northern Mexico and west Texas Sunday will continue to provide
excessive heat across portions of the CWA with heat index values
111 to 116 across the eastern half of deep south Texas and 110 to
115 across the western half Sun afternoon. Will likely need
excessive heat warnings for eastern portions of the CWA with heat
advisories across the rest of the area Sunday. Some relief to the
excessive heat is expected Monday as a cold front moves into south
Texas Mon morning and into the northern ranchlands Mon afternoon.
This will provide an increase in cloud cover with moisture pooling
along and ahead of the front as well as the winds will back to the
east. In addition...showers and thunderstorms will develop across
portions of the Rio Grande valley and northern ranchlands Mon
night into Tuesday as low to mid level moisture continues to
increase across northeast Mexico and southwest Texas as the upper
level ridge shifts westward and a 500mb shortwave trough develops
across the state. Rain chances will linger across the coastal
sections of the CWA Tues night into Wednesday before the 500mb
trough across the central United States moves eastward Thursday.
Temperatures will be well above normal Sunday and remain above
normal Monday before near normal to slighlty below normal
temperatures develop Tuesday and continue through the rest of the
week.
&&
.MARINE (Now through Saturday night): Weak surface high pressure
over South Texas and the Western Gulf of Mexico will continue to
support light southerly wind and slight seas tonight, Saturday and
Saturday night.
Sunday through Wednesday...Light southeast winds will prevail
across the coastal waters Sunday with low pressure across west
Texas and high pressure across the western Gulf of Mexico. A cold
front will move into south Texas Monday and winds will shift to
the northeast as the front moves into the coastal waters. Light to
moderate northeast winds will develop in the wake of the front Mon
night. Light to moderate north winds are expected to prevail
across the lower Texas coast Tuesday as high pressure builds into
the northwest Gulf. Winds should veer to the east on Wednesday as
the surface ridge weakens and shifts eastward.
&&
.PRELIMINARY POINT TEMPS/POPS...
BAYVIEW/PORT ISABEL 81 99 80 96 / 0 0 0 0
BROWNSVILLE 80 100 80 99 / 0 0 0 0
HARLINGEN 79 102 79 103 / 0 0 0 0
MCALLEN 80 105 80 106 / 0 0 0 0
RIO GRANDE CITY 79 108 79 109 / 0 0 0 0
SOUTH PADRE ISLAND 81 90 81 90 / 0 0 0 0
&&
.BRO WATCHES/WARNINGS/ADVISORIES...
TX...Heat Advisory until 7 PM CDT this evening for TXZ248>250-252-256-
257-351-353.
Excessive Heat Warning until 7 PM CDT this evening for TXZ251-
253>255.
Excessive Heat Watch Saturday afternoon for TXZ251-254-255.
GM...None.
&&
This product is also available on the web at:
HTTP://WEATHER.GOV/RGV
59/61/66Hazardous Weather Outlook National Weather Service Brownsville TX 435 AM CDT Fri Jun 7 2019 TXZ248>257-351-353-080945- Zapata-Jim Hogg-Brooks-Inland Kenedy-Starr-Southern Hidalgo- Inland Willacy-Inland Cameron-Coastal Willacy-Coastal Cameron- Coastal Kenedy-Northern Hidalgo- 435 AM CDT Fri Jun 7 2019 ...Excessive Heat Warning this afternoon for portions of the area... This Hazardous Weather Outlook is for portions of Deep South Texas. .DAY ONE...Today and Tonight An Excessive Heat Warning is in effect this afternoon for inland Cameron, Willacy, and Kenedy Counties, and southern Hidalgo County. A heat advisory is in effect for all other areas for the same time period. Near to record setting high temperatures, and heat index values up to 118 degrees will be possible for a few hours this afternoon in the warned area. There is a moderate risk of rip currents. .DAYS TWO THROUGH SEVEN...Saturday through Thursday Excessive heat will occur Saturday through Monday afternoons. The risk of severe weather will increase Monday night as a front moves into the area. Strong, damaging winds, large hail, lightning, and localized flash flooding will be the main threats. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed. GMZ130-132-135-150-155-170-175-080945- Laguna Madre from the Port of Brownsville to the Arroyo Colorado- Laguna Madre from the Arroyo Colorado To 5 NM north of Port Mansfield TX- Laguna Madre from 5 nm north of Port Mansfield to Baffin Bay TX- Coastal waters from Port Mansfield to the Rio Grande out 20 nm- Coastal waters from Baffin Bay to Port Mansfield out 20 nm- Waters from Port Mansfield to the Rio Grande extending from 20 to 60 nm- Waters from Baffin Bay to Port Mansfield extending from 20 to 60 nm- 435 AM CDT Fri Jun 7 2019 This Hazardous Weather Outlook is for portions of The Gulf of Mexico and The Laguna Madre. .DAY ONE...Today and Tonight No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Saturday through Thursday Potentially strong convection Monday night into Tuesday over all waters could make for a rough go for small craft operators due to lightning, torrential rains, and gale force gusts in stronger cells should they reach the Gulf. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed.
Special Weather Statement National Weather Service Brownsville TX 350 PM CDT Fri Jun 7 2019 TXZ253-353-072130- Southern Hidalgo TX-Northern Hidalgo TX- 350 PM CDT Fri Jun 7 2019 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN HIDALGO AND SOUTHEASTERN STARR COUNTIES UNTIL 430 PM CDT... At 349 PM CDT, Doppler radar was tracking a strong thunderstorm near Mccook, moving southeast at 10 mph. Penny size hail and winds in excess of 30 mph will be possible with this storm. Locations impacted include... Mccook. PRECAUTIONARY/PREPAREDNESS ACTIONS... Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. 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 2630 9836 2645 9849 2663 9839 2657 9813 TIME...MOT...LOC 2049Z 314DEG 10KT 2653 9844 CB
The Brownsville radar (KBRO), 115 km away, was scanning. The volume nearest the first event began at 21:08 UTC.
2 thunderstorm wind. Local standard time, as filed.
The cooperative observer in McCook reported a measured wind gust to 58 mph, which blew down several large tree limbs and streen signs in the town, as well as blew down power lines four miles southeast of the town about four minutes later.
Broadcast media reported structural damage to a mobile home in the La Homa Five Colonia just north of Alton. Damage included a torn off roof and partial wall collapse. Wind speed estimated from similar radar depiction from the same storm which caused minor damage about 10 miles northwest in McCook.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2019Every state in 2019This day in weather historyWarnings in Texas, June 2019
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: 853358, 853359.