Alert archive / Texas / Excessive Heat Warnings in 2016

Excessive Heat Warning 1, NWS Brownsville, TX

August 12, 2016Hidalgo County, Starr County, Texas

NWS Brownsville, TX issued this excessive heat warning at Aug 12, 2016, 4:05 AM CDT for Hidalgo County, Starr County, Texas. It took effect at Aug 12, 2016, 12:00 PM CDT. It was in force for 88 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 12, 2016, 4:05 AM CDT (09:05 UTC)
In effect from
Aug 12, 2016, 12:00 PM CDT
Expired
Aug 12, 2016, 1:28 PM CDT
In force
88 min
Issued by
NWS Brownsville, TX

Counties Hidalgo County, TX, Starr County, TX

The radar

The Brownsville radar (KBRO), 121 km from the middle of the area, began a volume at 09:05 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

Corpus Christi, TX (KCRP), launched 00:00Z, 9.1 hours before the alert went out and 178 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, Corpus Christi, TX at 00:00Z on 2016-08-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1067 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, Corpus Christi, TX at 00:00Z on 2016-08-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 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
1067 J/kg
Mixed-layer CIN
-168 J/kg
Mixed-layer LCL
1424 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
72 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.1

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 11, 7:15 PM CDTExcessive Heat WatchBROHidalgo, Starr9 hr
Aug 11, 7:15 PM CDTHeat AdvisoryBROBrooks, Cameron, Hidalgo, Kenedy, Starr, Willacy23 hr
Aug 11, 7:15 PM CDTHeat AdvisoryBROHidalgo, Starr9 hr

Nearby

Excessive Heat Warnings in Texas, 2016Every excessive heat warning in 2016

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.