Alert archive / Texas / Special Weather Statements in 2021

Special Weather Statement, NWS Brownsville, TX

July 21, 2021Cameron County, Texas

NWS Brownsville, TX issued this special weather statement at Jul 21, 2021, 5:40 PM CDT for Cameron 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 outline as issued.

The facts

Issued: Jul 21, 2021, 5:40 PM CDT (22:40 UTC)
Expired: Jul 21, 2021, 6:30 PM CDT
In force: 50 min
Issued by: NWS Brownsville, TX

County Cameron County, TX

The radar

The Brownsville radar (KBRO), 22 km from the middle of the area, began a volume at 22:44 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

Brownsville Intl, TX (KBRO), launched 12:00Z, 10.7 hours before the alert went out and 22 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: 2566 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 692 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 47 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, 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 this special weather statement went out at Jul 21, 3:12 PM CDT, 2 hours 28 minutes earlier.

Area forecast discussion, Jul 21, 3:12 PM CDT, 2 hours 28 minutes before

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Hazardous weather outlook, Jul 21, 4:52 PM CDT, 48 minutes before

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In the hours before

Special weather statement, Jul 21, 2:25 PM CDT, 3 hours 15 minutes before

Special Weather Statement
National Weather Service Brownsville TX
225 PM CDT Wed Jul 21 2021

TXZ249-252-212000-
Jim Hogg TX-Starr TX-
225 PM CDT Wed Jul 21 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN JIM HOGG AND NORTH
CENTRAL STARR COUNTIES UNTIL 300 PM CDT...

At 225 PM CDT, Doppler radar was tracking a strong thunderstorm near
El Sauz, moving north at 30 mph.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Viboras, El Sauz, La Gloria, Santa Catarina, San Rafael Ranch
Airport, Santa Elena and Diamond O Ranch Airport.

LAT...LON 2681 9842 2680 9842 2644 9875 2652 9897
      2697 9885
TIME...MOT...LOC 1925Z 200DEG 48KT 2656 9882

BA

Special weather statement, Jul 21, 2:44 PM CDT, 2 hours 56 minutes before

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Special weather statement, Jul 21, 2:59 PM CDT, 2 hours 41 minutes before

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Special weather statement, Jul 21, 3:22 PM CDT, 2 hours 18 minutes before

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Special weather statement, Jul 21, 4:56 PM CDT, 44 minutes before

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Special weather statement, Jul 21, 5:40 PM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 20, 7:26 PM CDT	Severe Thunderstorm Warning	BRO	Hidalgo	34 min
Jul 20, 7:56 PM CDT	Severe Thunderstorm Warning	BRO	Hidalgo	34 min
Jul 20, 8:03 PM CDT	Areal Flood Advisory	BRO	Hidalgo	57 min
Jul 21, 12:02 PM CDT	Special Weather Statement	BRO	Cameron	43 min
Jul 21, 12:28 PM CDT	Special Weather Statement	BRO	Cameron	47 min
Jul 21, 1:15 PM CDT	Special Weather Statement	BRO	Starr	45 min
Jul 21, 1:16 PM CDT	Areal Flood Advisory	BRO	Cameron	119 min
Jul 21, 1:31 PM CDT	Special Weather Statement	BRO	Starr	44 min
Jul 21, 1:48 PM CDT	Special Weather Statement	BRO	Starr	42 min
Jul 21, 2:00 PM CDT	Special Weather Statement	BRO	Hidalgo	45 min
Jul 21, 2:05 PM CDT	Areal Flood Advisory	BRO	Hidalgo	115 min
Jul 21, 2:25 PM CDT	Special Weather Statement	BRO	Starr	35 min
Jul 21, 2:37 PM CDT	Areal Flood Advisory	BRO	Cameron	7 min
Jul 21, 2:44 PM CDT	Flash Flood Warning	BRO	Cameron	63 min
Jul 21, 2:44 PM CDT	Special Weather Statement	BRO	Hidalgo	31 min
Jul 21, 2:56 PM CDT	Areal Flood Advisory	BRO	Cameron, Hidalgo	5 hr
Jul 21, 2:59 PM CDT	Special Weather Statement	BRO	Starr	31 min
Jul 21, 3:22 PM CDT	Special Weather Statement	BRO	Kenedy	23 min
Jul 21, 3:39 PM CDT	Areal Flood Advisory	BRO	Hidalgo	111 min
Jul 21, 3:53 PM CDT	Areal Flood Advisory	BRO	Hidalgo	52 min
Jul 21, 4:15 PM CDT	Flash Flood Warning Considerable damage threat	BRO	Hidalgo	105 min
Jul 21, 4:27 PM CDT	Areal Flood Advisory	BRO	Brooks	63 min
Jul 21, 4:40 PM CDT	Areal Flood Advisory	BRO	Cameron	110 min
Jul 21, 4:56 PM CDT	Special Weather Statement	BRO	Cameron	49 min
Jul 21, 5:31 PM CDT	Areal Flood Advisory	BRO	Cameron	89 min

Nearby

Special Weather Statements in Texas, 2021 Every special weather statement in 2021

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.