Alert archive / Texas / Wind Advisories in 2011
Wind Advisory 13, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this wind advisory at May 1, 2011, 11:57 AM CDT for 17 counties in Texas. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- May 1, 2011, 11:57 AM CDT (16:57 UTC)
- Expired
- May 1, 2011, 6:00 PM CDT
- In force
- 6 hr
- Issued by
- NWS Houston/Galveston, TX
Counties Austin County, TX, Brazoria County, TX, Brazos County, TX, Burleson County, TX, Chambers County, TX, Colorado County, TX, Fort Bend County, TX, Galveston County, TX, Grimes County, TX, Harris County, TX, Jackson County, TX, Liberty County, TX, Madison County, TX, Matagorda County, TX, Waller County, TX, Washington County, TX, Wharton County, TX
The radar
The Houston radar (KHGX), 86 km from the middle of the area, began a volume at 16:57 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
Lake Charles Mun, LA (KLCH), launched 12:00Z, 5.0 hours before the alert went out and 259 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.
- Mixed-layer CAPE
- 2079 J/kg
- Mixed-layer CIN
- -30 J/kg
- Mixed-layer LCL
- 551 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- 186 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 3.4
The text
As transmitted, in the capitals the NWS used until 2016.
240 WWUS74 KHGX 011657 NPWHGX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 1157 AM CDT SUN MAY 1 2011 ...WIND ADVISORY FOR MOST OF SOUTHEAST TEXAS UNTIL 6 PM CDT... .A TIGHT PRESSURE GRADIENT BETWEEN LOW PRESSURE OVER WEST TEXAS AND HIGH PRESSURE OVER THE EASTERN GULF WILL RESULT IN MODERATE TO STRONG SOUTH TO SOUTHEAST WINDS TODAY. TXZ176-195>198-200-210>214-226-227-235>238-012300- /O.NEW.KHGX.WI.Y.0013.110501T1657Z-110501T2300Z/ AUSTIN-BRAZORIA-BRAZOS-BURLESON-CHAMBERS-COLORADO-FORT BEND- GALVESTON-GRIMES-HARRIS-JACKSON-LIBERTY-MADISON-MATAGORDA-WALLER- WASHINGTON-WHARTON- INCLUDING THE CITIES OF...ALVIN...ANAHUAC...ANGLETON...BAY CITY... BELLVILLE...BRENHAM...BROOKSHIRE...BRYAN...CALDWELL...CLEVELAND... COLLEGE STATION...COLUMBUS...DAYTON...EAGLE LAKE...EDNA... EL CAMPO...FREEPORT...FRIENDSWOOD...GALVESTON...HEMPSTEAD... HOUSTON...HUMBLE...KATY...LAKE JACKSON...LAKE SOMERVILLE... LEAGUE CITY...LIBERTY...MADISONVILLE...MISSOURI CITY... MONT BELVIEU...NAVASOTA...PALACIOS...PASADENA...PEARLAND... PIERCE...PRAIRIE VIEW...RICHMOND...ROSENBERG...SEALY... SUGAR LAND...TEXAS CITY...TOMBALL...WEIMAR...WHARTON...WINNIE 1157 AM CDT SUN MAY 1 2011 ...WIND ADVISORY IN EFFECT UNTIL 6 PM CDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT UNTIL 6 PM CDT THIS EVENING. * TIMING...THROUGH 6 PM CDT * WINDS...SOUTH TO SOUTHEAST WINDS 20 TO 30 MPH ARE EXPECTED. WIND GUSTS AS HIGH AS 40 MPH ARE POSSIBLE ESPECIALLY NEAR MATAGORDA BAY. * IMPACTS...WINDS COULD BLOW AROUND LOOSE LIGHTWEIGHT OUTDOOR OBJECTS. WINDS WILL AFFECT DRIVERS ON EAST-WEST ORIENTED ROADS. 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. && $$
1 follow-up statement
539 WWUS74 KHGX 012310 NPWHGX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 610 PM CDT SUN MAY 1 2011 ...WIND ADVISORY HAS EXPIRED... .THE WIND ADVISORY HAS BEEN ALLOWED TO EXPIRE. WINDS SHOULD CONTINUE TO DECREASE THIS EVENING. A COLD FRONT IS EXPECTED TO SLOWLY PUSH INTO THE AREA TONIGHT AND SHIFT WINDS TO THE NORTH. WINDS MAY STILL BE GUSTY OVERNIGHT BEHIND THE FRONT BUT SHOULD NOT REACH WIND ADVISORY CRITERIA. TXZ176-195>198-200-210>214-226-227-235>238-020015- /O.EXP.KHGX.WI.Y.0013.000000T0000Z-110501T2300Z/ AUSTIN-BRAZORIA-BRAZOS-BURLESON-CHAMBERS-COLORADO-FORT BEND- GALVESTON-GRIMES-HARRIS-JACKSON-LIBERTY-MADISON-MATAGORDA-WALLER- WASHINGTON-WHARTON- INCLUDING THE CITIES OF...ALVIN...ANAHUAC...ANGLETON...BAY CITY... BELLVILLE...BRENHAM...BROOKSHIRE...BRYAN...CALDWELL...CLEVELAND... COLLEGE STATION...COLUMBUS...DAYTON...EAGLE LAKE...EDNA... EL CAMPO...FREEPORT...FRIENDSWOOD...GALVESTON...HEMPSTEAD... HOUSTON...HUMBLE...KATY...LAKE JACKSON...LAKE SOMERVILLE... LEAGUE CITY...LIBERTY...MADISONVILLE...MISSOURI CITY... MONT BELVIEU...NAVASOTA...PALACIOS...PASADENA...PEARLAND... PIERCE...PRAIRIE VIEW...RICHMOND...ROSENBERG...SEALY... SUGAR LAND...TEXAS CITY...TOMBALL...WEIMAR...WHARTON...WINNIE 610 PM CDT SUN MAY 1 2011 ...WIND ADVISORY HAS EXPIRED... THE WIND ADVISORY HAS BEEN ALLOWED TO EXPIRE. WINDS SHOULD CONTINUE TO DECREASE THIS EVENING. A COLD FRONT IS EXPECTED TO SLOWLY PUSH INTO THE AREA TONIGHT AND SHIFT WINDS TO THE NORTH. WINDS MAY STILL BE GUSTY OVERNIGHT BEHIND THE FRONT BUT SHOULD NOT REACH WIND ADVISORY CRITERIA. $$
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 1, 3:45 AM CDT | Small Craft Advisory | HGX | 20 hr |
Nearby
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.