Alert archive / Texas / Winter Storm Warnings in 2017

Winter Storm Warning 1, NWS Corpus Christi, TX

December 7, 20175 counties in Texas

NWS Corpus Christi, TX issued this winter storm warning at Dec 7, 2017, 11:44 AM CST for 5 counties in Texas. It took effect at Dec 8, 2017, 12:00 AM CST. It was in force for 9 hr. 8 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Dec 7, 2017, 11:44 AM CST (17:44 UTC)
In effect from
Dec 8, 2017, 12:00 AM CST
Expired
Dec 8, 2017, 9:00 AM CST
In force
9 hr
Issued by
NWS Corpus Christi, TX

Counties Duval County, TX, Jim Wells County, TX, Kleberg County, TX, Nueces County, TX, San Patricio County, TX

The radar

The Corpus Christi radar (KCRP), 35 km from the middle of the area, began a volume at 17:45 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.

What was reported inside it

TimeReportWhereRemark
Dec 8, 5:26 AM CSTHEAVY SNOW 2.53 S Corpus Christi, TX
Dec 8, 7:00 AM CSTHEAVY SNOW 3Portland, TX
Dec 8, 7:00 AM CSTHEAVY SNOW 4.57 Sse Kingsville, TX
Dec 8, 7:00 AM CSTHEAVY SNOW 52 Ese Corpus Christi, TX5 OF SNOW MEASURED BY NWS EMPLOYEE.
Dec 8, 7:15 AM CSTHEAVY SNOW 53 S Corpus Christi, TX
Dec 8, 8:00 AM CSTHEAVY SNOW 3.1Portland, TX
Dec 8, 8:49 AM CSTHEAVY SNOW 2.53 N Driscoll, TXVIDEO SUBMITTED OF SNOW MEASUREMENTS IN THE LA PALOMA-LOST CREEK AREA.
Dec 8, 8:53 AM CSTHEAVY SNOW 4Ingleside, TXPICTURE SUBMITTED ON SOCIAL MEDIA OF SNOW IN INGLESIDE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Brownsville Intl, TX (KBRO), launched 12:00Z, 5.7 hours before the alert went out and 207 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 12:00Z on 2017-12-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLEL10008507005003002001001 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 12:00Z on 2017-12-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 271 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
418 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
271 m²/s²
0-3 km storm-relative helicity
1076 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 winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Corpus Christi, TX wrote its last area forecast discussion before this winter storm warning went out at Dec 7, 11:38 AM CST, 6 minutes earlier.

Area forecast discussion, Dec 7, 11:38 AM CST, 6 minutes before
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Hazardous weather outlook, Dec 7, 6:12 AM CST, 5 hours 32 minutes before
Hazardous Weather Outlook
National Weather Service Corpus Christi TX
612 AM CST Thu Dec 7 2017

TXZ229>234-239>247-081215-
La Salle-McMullen-Live Oak-Bee-Goliad-Victoria-Webb-Duval-
Jim Wells-Kleberg-Nueces-San Patricio-Aransas-Refugio-Calhoun-
612 AM CST Thu Dec 7 2017

This hazardous weather outlook is for South Texas and the Middle
Texas Coastal Waters.

.DAY ONE...Today and Tonight

A Winter Weather Advisory is in effect for Webb and Lasalle
counties from mid morning through early afternoon. Rain is
expected to change over to snow in these areas. Only light snow
accumulations are expected with minimal impacts.

There will be a chance for snow to mix with rain across much of
South Texas late tonight, mainly South of Hwy 181. Little to no
accumulation of snow is expected at this time with minimal
impacts.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Pockets of freezing temperatures are possible Saturday morning
around the Victoria Crossroads and the northern Brush Country.

Any residual moisture on area roadways and elevated surfaces may see
black ice develop.

.SPOTTER INFORMATION STATEMENT...

Any reports of frozen precipitation are welcome.

GMZ230-235-250-255-270-275-081215-
Bays and Waterways from Baffin Bay to Port Aransas-
Bays and Waterways from Port Aransas to Port O'Connor-
Coastal waters from Baffin Bay to Port Aransas out 20 NM-
Coastal waters from Port Aransas to Matagorda Ship Channel out
20 NM-Waters from Baffin Bay to Port Aransas from 20 to 60 NM-
Waters from Port Aransas to Matagorda Ship Channel from 20 to
60 NM-
612 AM CST Thu Dec 7 2017

This hazardous weather outlook is for South Texas and the Middle
Texas Coastal Waters.

.DAY ONE...Today and Tonight

Gale warning is in effect for Gulf Waters today and tonight for
very strong winds with gale force gusts. Small craft advisories
are in effect for the bays.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

A strong offshore flow will continue through Friday morning over the
Gulf waters. Small Craft Advisory will be needed for Friday as seas
will be slow to subside.

In the hours before

Local storm report, Dec 7, 10:01 AM CST, 1 hour 43 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
1001 AM CST THU DEC 07 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0946 AM     SNOW             ARTESIA WELLS           28.22N  99.29W
12/07/2017  U0.0 INCH        LA SALLE           TX   SOCIAL MEDIA

            VIDEO SUBMITTED OF SNOW FALLING IN ARTESIA WELLS.

&&

EVENT NUMBER CRP1700329

HART
Local storm report, Dec 7, 11:36 AM CST, 8 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Dec 7, 5:53 AM CSTWinter Weather AdvisoryCRPLa Salle, McMullen, Webb20 hr
Dec 7, 11:44 AM CSTWinter Weather AdvisoryCRPAransas, Bee, Calhoun, Goliad, Live Oak, Refugio and 2 more18 hr
Dec 7, 2:50 PM CSTCoastal Flood AdvisoryCRPKleberg, Nueces8 hr
Dec 7, 4:14 PM CSTWind Chill AdvisoryCRPAransas, Bee, Calhoun, Duval, Goliad, Jim Wells and 6 more17 hr

Nearby

Winter Storm Warnings in Texas, 2017Every winter storm warning in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.