Alert archive / Texas / Freeze Warnings in 2018

Freeze Warning 5, NWS Brownsville, TX

January 17, 20184 counties in Texas

NWS Brownsville, TX issued this freeze warning at Jan 17, 2018, 9:15 AM CST for 4 counties in Texas. It was in force for 105 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
Jan 17, 2018, 9:15 AM CST (15:15 UTC)
Expired
Jan 17, 2018, 11:00 AM CST
In force
105 min
Issued by
NWS Brownsville, TX

Counties Cameron County, TX, Hidalgo County, TX, Starr County, TX, Willacy County, TX

The radar

The Brownsville radar (KBRO), 78 km from the middle of the area, began a volume at 15:18 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 12:00Z, 3.3 hours before the alert went out and 162 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 12:00Z on 2018-01-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2018-01-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1534 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
249 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this freeze warning 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 freeze warning went out at Jan 17, 5:53 AM CST, 3 hours 22 minutes earlier.

Area forecast discussion, Jan 17, 5:53 AM CST, 3 hours 22 minutes before
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Hazardous weather outlook, Jan 17, 6:45 AM CST, 2 hours 30 minutes before
Hazardous Weather Outlook
National Weather Service Brownsville TX
645 AM CST Wed Jan 17 2018

TXZ248>257-172200-
Zapata-Jim Hogg-Brooks-Kenedy-Starr-Hidalgo-Inland
Willacy-Inland Cameron-Coastal Willacy-Coastal Cameron-
645 AM CST Wed Jan 17 2018

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

.DAY ONE...Today and Tonight

A Winter Weather Advisory remains in effect for Willacy and Cameron
Counties until 10 am Today.

A Hard Freeze Warning remains in effect for Zapata, Jim Hogg, Brooks
and Kenedy Counties until 9 AM Today.

A Freeze Warning remains in effect for Starr, Hidalgo, Willacy
and Cameron Counties until 9 AM Today.

A Wind Chill Warning remains in effect for Starr, Hidalgo,
Inland Willacy and Inland Cameron Counties until noon Today.

A Wind Chill Advisory remains in effect for Zapata, Jim Hogg,
Brooks, Kenedy, Coastal Willacy and Coastal Cameron Counties until
noon Today.

There is a high risk of rip currents at the beaches of South Padre
Island and at Boca Chica Beach.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

An elevated risk of rip currents is likely at the local beaches
through the entire forecast period.

.SPOTTER INFORMATION STATEMENT...

Skywarn spotter activation will not be needed.

GMZ130-132-135-150-155-170-175-172200-
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-
645 AM CST Wed Jan 17 2018

This Hazardous Weather Outlook is for portions of The Gulf of
Mexico and The Laguna Madre.

.DAY ONE...Today and Tonight

A Small Craft Advisory remains in effect for the Lower Texas Gulf
Waters until 6 PM Today.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Small Craft Advisories are likely to be needed for portions or all
of the Lower Texas coastal waters Saturday through Monday.

.SPOTTER INFORMATION STATEMENT...

Skywarn spotter activation will not be needed.

Speece

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 16, 8:57 PM CSTSmall Craft AdvisoryBRO27 hr
Jan 16, 8:57 PM CSTSmall Craft Advisory for WindsBRO9 hr
Jan 17, 4:25 PM CSTFreeze WarningBROBrooks, Hidalgo, Jim Hogg, Kenedy, Starr, Willacy and 1 more17 hr
Jan 17, 4:56 PM CSTWind Chill AdvisoryBROCameron, Willacy17 hr

Nearby

Freeze Warnings in Texas, 2018Every freeze warning 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.