Alert archive / Texas / Special Weather Statements in 2018

Special Weather Statement, NWS Brownsville, TX

October 11, 2018Willacy County, Texas

NWS Brownsville, TX issued this special weather statement at Oct 11, 2018, 6:51 AM CDT for Willacy County, Texas. It was in force for 39 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
Oct 11, 2018, 6:51 AM CDT (11:51 UTC)
Expired
Oct 11, 2018, 7:30 AM CDT
In force
39 min
Issued by
NWS Brownsville, TX

County Willacy County, TX

The radar

The Brownsville radar (KBRO), 62 km from the middle of the area, began a volume at 11:51 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 00:00Z, 11.9 hours before the alert went out and 65 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-pSkew-T log-p diagram, Brownsville Intl, TX at 00:00Z on 2018-10-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1789 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brownsville Intl, TX at 00:00Z on 2018-10-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -25 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1789 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
902 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
-25 m²/s²
0-3 km storm-relative helicity
43 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

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 Oct 11, 6:49 AM CDT, 2 minutes earlier.

Area forecast discussion, Oct 11, 6:49 AM CDT, 2 minutes before
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Hazardous weather outlook, Oct 11, 5:46 AM CDT, 1 hour 5 minutes before
Hazardous Weather Outlook
National Weather Service Brownsville TX
546 AM CDT Thu Oct 11 2018

TXZ248>257-351-353-112100-
Zapata-Jim Hogg-Brooks-Inland Kenedy-Starr-Southern Hidalgo-
Inland Willacy-Inland Cameron-Coastal Willacy-Coastal Cameron-
Coastal Kenedy-Northern Hidalgo-
546 AM CDT Thu Oct 11 2018

This Hazardous Weather Outlook is for portions of Deep South
Texas.

.DAY ONE...Today and Tonight

A Coastal Flood Advisory is in effect until 7 AM this morning and
High Surf Advisory is in effect until 1 PM today for all coastal
areas of Deep South Texas.

There is a High Risk of rip currents at the beaches of South
Padre Island and Boca Chica State Park.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

An elevated risk of rip currents is expected to continue at the
local beaches on Friday and may return for Monday and Tuesday.

Monday night through Tuesday: Heavy rainfall will increase the
potential for urban and poor drainage flooding, especially across
the Rio Grande Valley.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

GMZ130-132-135-150-155-170-175-112100-
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-
546 AM CDT Thu Oct 11 2018

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.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Small Craft Advisories may be needed on Saturday and Saturday
night and again on Monday night and Tuesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

53

In the hours before

Special weather statement, Oct 11, 6:13 AM CDT, 38 minutes before
Special Weather Statement
National Weather Service Brownsville TX
613 AM CDT THU OCT 11 2018

TXZ254>256-111200-
Coastal Willacy TX-Inland Willacy TX-Inland Cameron TX-
613 AM CDT THU OCT 11 2018

...SPECIAL WEATHER STATEMENT...

At 612 AM CDT, Doppler radar was tracking a strong thunderstorm near
Rio Hondo Elementary School, or near Rio Hondo, moving north at 10
mph.

Half inch hail and winds in excess of 30 mph will be possible with
this storm.

Locations impacted include...
Rio Hondo, Arroyo City, San Perlita, Porfirio, Rio Hondo Elementary
School, Rio Hondo High School, Willamar, Santa Monica, San Perlita
High School and Rio Hondo City Hall.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

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.

&&

LAT...LON 2621 9744 2622 9764 2652 9768 2651 9744
      2648 9745 2649 9744 2646 9744 2647 9745
      2645 9746 2644 9745 2646 9745 2645 9744
      2641 9744 2641 9745 2633 9744 2632 9745
      2629 9744
TIME...MOT...LOC 1112Z 180DEG 10KT 2629 9754

53-Schroeder
Special weather statement, Oct 11, 6:51 AM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Oct 11, 5:53 AM CDTAreal Flood AdvisoryBROCameron, Willacy82 min
Oct 11, 6:13 AM CDTSpecial Weather StatementBROWillacy47 min
Oct 11, 6:21 AM CDTSpecial Marine WarningBRO39 min
Oct 11, 11:39 AM CDTAreal Flood AdvisoryBROCameron3 hr
Oct 11, 1:35 PM CDTCoastal Flood StatementBROKenedy8 hr

Nearby

Special Weather Statements in Texas, 2018Every special weather statement in 2018

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.