Alert archive / Texas / Wind Advisories in 2012

Wind Advisory 9, NWS Houston/Galveston, TX

April 27, 20125 counties in Texas

NWS Houston/Galveston, TX issued this wind advisory at Apr 27, 2012, 10:35 AM CDT for 5 counties in Texas. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
Apr 27, 2012, 10:35 AM CDT (15:35 UTC)
Expired
Apr 27, 2012, 3:29 PM CDT
In force
5 hr
Issued by
NWS Houston/Galveston, TX

Counties Brazoria County, TX, Chambers County, TX, Galveston County, TX, Jackson County, TX, Matagorda County, TX

The radar

The Houston radar (KHGX), 52 km from the middle of the area, began a volume at 15:32 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, 3.6 hours before the alert went out and 242 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 2012-04-27Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Corpus Christi, TX at 12:00Z on 2012-04-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -44 square meters per square second.193958Sfc1 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
1435 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
-44 m²/s²
0-3 km storm-relative helicity
7 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

635 
WWUS74 KHGX 271535
NPWHGX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1035 AM CDT FRI APR 27 2012

...WIND ADVISORY IN EFFECT THROUGH 4 PM...

.A STRONG PRESSURE GRADIENT WILL PRODUCE STRONG SOUTHERLY WINDS
THIS AFTERNOON. SUSTAINED SOUTH WINDS AT 20 TO 25 MPH WITH GUSTS
TO 35 MPH WILL PREVAIL TROUGH LATE AFTERNOON. THE WINDS WILL
GRADUALLY DIMINISH THIS EVENING.

TXZ214-235>238-272100-
/O.NEW.KHGX.WI.Y.0009.120427T1535Z-120427T2100Z/
BRAZORIA-CHAMBERS-GALVESTON-JACKSON-MATAGORDA-
INCLUDING THE CITIES OF...ALVIN...ANAHUAC...ANGLETON...BAY CITY...
EDNA...FREEPORT...FRIENDSWOOD...GALVESTON...LAKE JACKSON...
LEAGUE CITY...MONT BELVIEU...PALACIOS...PEARLAND...TEXAS CITY...
WINNIE
1035 AM CDT FRI APR 27 2012

...WIND ADVISORY IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON...

THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON HAS ISSUED A
WIND ADVISORY...WHICH IS IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON.

* TIMING...STRONG WINDS WILL PREVAIL THROUGH 4 PM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DRIVERS OF VANS...CAMPERS...TRAILERS...AND OTHER HIGH-PROFILE
VEHICLES SHOULD BE ALERT TO THE DANGER OF THESE WINDS...
ESPECIALLY WHEN DRIVING ALONG EAST TO WEST ORIENTED ROADS

&&

$$
1 follow-up statement
073 
WWUS74 KHGX 272029
NPWHGX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
329 PM CDT FRI APR 27 2012

...WIND ADVISORY HAS BEEN CANCELED...

.MODERATE TO STRONG SOUTHERLY WINDS WILL PERSIST INTO THE EVENING
HOWEVER SPEEDS HAVE FALLEN BELOW ADVISORY CRITERIA. SINCE WIND
SPEEDS ARE BELOW ADVISORY CRITERIA...THE WIND ADVISORY HAS BEEN
CANCELED.

TXZ214-235>238-272130-
/O.CAN.KHGX.WI.Y.0009.000000T0000Z-120427T2100Z/
BRAZORIA-CHAMBERS-GALVESTON-JACKSON-MATAGORDA-
INCLUDING THE CITIES OF...ALVIN...ANAHUAC...ANGLETON...BAY CITY...
EDNA...FREEPORT...FRIENDSWOOD...GALVESTON...LAKE JACKSON...
LEAGUE CITY...MONT BELVIEU...PALACIOS...PEARLAND...TEXAS CITY...
WINNIE
329 PM CDT FRI APR 27 2012

...WIND ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON HAS CANCELLED
THE WIND ADVISORY. 

WIND SPEEDS HAVE FALLEN BELOW ADVISORY CRITERIA...THEREFORE...THE
WIND ADVISORY HAS BEEN CANCELED.

$$

Nearby

Wind Advisories in Texas, 2012Every wind advisory in 2012

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.