Alert archive / Texas / Wind Advisories in 2006
Wind Advisory 11, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this wind advisory at Nov 15, 2006, 5:07 AM CST for 23 counties in Texas. It took effect at Nov 15, 2006, 6:00 AM CST. It was in force for 12 hr.
The area
The counties it named.
The facts
- Issued
- Nov 15, 2006, 5:07 AM CST (11:07 UTC)
- In effect from
- Nov 15, 2006, 6:00 AM CST
- Expired
- Nov 15, 2006, 6:00 PM CST
- In force
- 12 hr
- Issued by
- NWS Houston/Galveston, TX
All 23 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, Houston County, TX, Jackson County, TX, Liberty County, TX, Madison County, TX, Matagorda County, TX, Montgomery County, TX, Polk County, TX, San Jacinto County, TX, Trinity County, TX, Walker County, TX, Waller County, TX, Washington County, TX, Wharton County, TX
The radar
The Houston radar (KHGX), 91 km from the middle of the area, began a volume at 11:10 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 00:00Z, 11.1 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.
- Mixed-layer CAPE
- 2154 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 485 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 194 m²/s²
- 0-3 km storm-relative helicity
- 287 m²/s²
- Significant tornado parameter
- 2.3
- Supercell composite
- 10.6
What forecasters said that day
The local office's own words before this wind advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Houston/Galveston, TX wrote its last area forecast discussion before this wind advisory went out at Nov 15, 3:10 AM CST, 1 hour 57 minutes earlier.
Area forecast discussion, Nov 15, 3:10 AM CST, 1 hour 57 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
310 AM CST WED NOV 15 2006
.DISCUSSION...
COLD FRONT HAS REACHED OUR FAR NW ZONES...MOVING SOUTHEAST 35 TO
40 MPH. THE FRONT WILL SWEEP ACROSS THE AREA IN THE NEXT 4 HOURS
AND PUSH OFF THE COAST BY AROUND 13Z. 00Z ANALYSIS INDICATED THAT
THE DEEPEST MOISTURE WAS SHIFTING EAST OF SE TX WITH SIGNIFICANT
CAPPING IN PLACE OVER MUCH OF THE AREA. WILL MENTION 20 POPS
ENDING BY SUNRISE FOR THE POSSIBILITY OF AN ISOLATED SHRA/TSRA
DEVELOPING ALONG THE FRONT. HOWEVER...THE SIGNIFICANT CONVECTIVE
THREAT WILL REMAIN EAST OF THE AREA.
SFC ANALYSIS SHOWS LOW PRESSURE OVER THE RED RIVER VALLEY HAS
DEEPENED TO 993 MB. AS THE LOW CONTINUES TO INTENSIFY TODAY A VERY
TIGHT PRESSURE GRADIENT WILL DEVELOP IN THE WAKE OF THE FRONT. GFS
IS FORECASTING 850 MB WINDS OF 40-50 KTS AND SUSTAINED WINDS AT
THE SFC OF 25-30 KNOTS. WILL POST A WIND ADVISORY FOR ALL OF SE
TX. ADVISORY WILL BEGIN AT 12Z...BUT THINK IT WILL BE MID-MORNING
WHEN THE WINDS REACH THE CRITERIA. DEWPOINTS ARE RAPIDLY DROPPING
INTO THE UPPER 30S BEHIND THE FRONT SO THE COMBINATION OF STRONG
WINDS/MUCH LOWER RHS WILL LEAD TO FIRE WEATHER CONCERNS TODAY.
WINDS WILL DIMINISH AROUND SUNSET EXCEPT NEAR THE IMMEDIATE COAST.
AS UPPER LOW CONTINUES TO DIG SOUTHWARD TODAY...SOME MID LEVEL
CLOUDINESS WILL SPREAD INTO THE FAR NRN ZONES.
SURFACE HIGH BUILDS OVER SE TX TONIGHT THROUGH FRIDAY WITH CLEAR
SKIES AND PLEASANT FALL TEMPS. THINK THU NIGHT WILL BE THE COOLEST
NIGHT AS WINDS FULLY DECOUPLE...AND COULD SEE MID 30S OVER OUR NE
ZONES.
WEAK RETURN FLOW DEVELOPS FRI NIGHT/SATURDAY WITH ENOUGH MOISTURE
TO SUPPORT A FEW CLOUDS SATURDAY. MODELS SHOW TWO REINFORCING
FRONTS CROSSING SE TX THIS WEEKEND...A WEAK FRONT SATURDAY THAT
STALLS OVER THE AREA FOLLOWED BY A STRONGER FRONT ON SUNDAY.
LATEST GFS RUN IS MUCH MORE AGGRESSIVE THAN PREVIOUS RUNS IN
LIFT/MOISTURE FORECASTS WITH SECOND FRONT. OTHER MEDIUM RANGE
MODELS SHOW A MUCH DRIER SCENARIO. WILL LEAVE POPS OUT OF THE FCST FOR
NOW UNTIL THERE IS BETTER AGREEMENT. WILL SEE A COOLDOWN BEHIND
SECOND FRONT FOR SUNDAY/MONDAY...WITH A WARMING TREND BEGINNING
TUESDAY AS UPPER RIDGING BEGINS TO BUILD OVERHEAD.
35
&&
.MARINE...
VERY ROUGH SEAS EXPECTED TODAY AS NORTHWEST WINDS INCREASE. A SMALL
CRAFT ADVISORY IS IN EFFECT FOR TODAY AND TONIGHT AS SUSTAINED WINDS
INCREASE TO GREATER THAN 20 KNOTS. THERE WILL BE A FEW WIND GUSTS TO
NEAR GALE FORCE. SEAS WILL BUILD QUICKLY IN THE WAKE OF THE FRONTAL
PASSAGE. 43
&&
.AVIATION...
WINDS ARE THE MAIN STORY TODAY. SKIES WILL CLEAR BETWEEN 14-16Z AND
THE ONLY IMPEDIMENT TO FLYING WILL BE STRONG WINDS. 43
&&
.FIRE WEATHER...
HAVE ISSUED A RED FLAG WARNING FOR TODAY AS RH VALUES DROP BELOW 25
PERCENT OVER THE WEST AND BETWEEN 25-30 PERCENT OVER THE EAST.
STRONG NORTHWEST WINDS AND RELATIVELY DRY GROUND FUELS WILL SET THE
STAGE FOR DANGEROUS FIRE WEATHER CONDITIONS TODAY. 43
&&
.PRELIMINARY POINT TEMPS/POPS...
COLLEGE STATION (CLL) 67 41 65 41 74 / 5 0 0 0 0
HOUSTON (IAH) 71 42 65 42 73 / 5 0 0 0 0
GALVESTON (GLS) 74 51 67 55 71 / 10 0 0 0 0
&&
.HGX WATCHES/WARNINGS/ADVISORIES...
TX...RED FLAG WARNING FROM 6 AM WEDNESDAY TO 6 PM WEDNESDAY FOR THE
FOLLOWING ZONES: AUSTIN...BRAZORIA...BRAZOS...BURLESON...
CHAMBERS...COLORADO...FORT BEND...GALVESTON...GRIMES...
HARRIS...HOUSTON...JACKSON...LIBERTY...MADISON...
MATAGORDA...MONTGOMERY...POLK...SAN JACINTO...TRINITY...
WALKER...WALLER...WASHINGTON...AND WHARTON.
WIND ADVISORY FROM 6 AM WEDNESDAY TO 6 PM WEDNESDAY FOR THE
FOLLOWING ZONES: AUSTIN...BRAZORIA...BRAZOS...BURLESON...
CHAMBERS...COLORADO...FORT BEND...GALVESTON...GRIMES...
HARRIS...HOUSTON...JACKSON...LIBERTY...MADISON...
MATAGORDA...MONTGOMERY...POLK...SAN JACINTO...TRINITY...
WALKER...WALLER...WASHINGTON...AND WHARTON.
GM...SMALL CRAFT ADVISORY UNTIL 6 PM WEDNESDAY FOR THE FOLLOWING
ZONES: GALVESTON BAY...AND MATAGORDA BAY.
SMALL CRAFT ADVISORY UNTIL 6 AM THURSDAY FOR THE FOLLOWING
ZONES: WATERS FROM FREEPORT TO THE MATAGORDA SHIP CHANNEL
20 NM TO 60 NM...WATERS FROM FREEPORT TO THE MATAGORDA SHIP
CHANNEL OUT 20 NM...WATERS FROM HIGH ISLAND TO FREEPORT 20
TO 60 NM...AND WATERS FROM HIGH ISLAND TO FREEPORT OUT 20
NM.
&&Hazardous weather outlook, Nov 15, 5:02 AM CST, 5 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 502 AM CST WED NOV 15 2006 TXZ163-164-176>179-195>200-210>214-226-227-235>238-161200- AUSTIN-BRAZORIA-BRAZOS-BURLESON-CHAMBERS-COLORADO-FORT BEND- GALVESTON-GRIMES-HARRIS-HOUSTON-JACKSON-LIBERTY-MADISON-MATAGORDA- MONTGOMERY-POLK-SAN JACINTO-TRINITY-WALKER-WALLER-WASHINGTON- WHARTON- 502 AM CST WED NOV 15 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST TEXAS. .DAY ONE...TODAY AND TONIGHT A WIND ADVISORY IS IN EFFECT FOR ALL OF SOUTHEAST TEXAS UNTIL 6 PM CST TODAY. A STRONG COLD FRONT WILL MOVE OFF THE COAST EARLY THIS MORNING. IN THE WAKE OF THE FRONT...SUSTAINED WINDS OF 25 TO 30 MPH ARE EXPECTED BEGINNING MID TO LATE MORNING OVER THE ENTIRE AREA...WITH SUSTAINED WINDS OF 30 TO 35 MPH NEAR THE COAST. WIND GUSTS OF 35 TO 45 MPH CAN BE EXPECTED AT TIMES...ESPECIALLY NEAR THE COAST. THE WINDS ARE EXPECTED TO DIMINISH AROUND SUNSET...EXCEPT NEAR THE IMMEDIATE COAST WHERE THE STRONG WINDS WILL PERSIST UNTIL AROUND MIDNIGHT. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. MOTORISTS SHOULD USE CAUTION WHILE DRIVING TODAY. A RED FLAG WARNING IS IN EFFECT FOR ALL OF SOUTHEAST TEXAS UNTIL 6 PM CST. THE COMBINATION OF STRONG WINDS AND LOW RELATIVE HUMIDITIES WILL LEAD TO A HIGH FIRE DANGER TODAY. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY NO HAZARDOUS WEATHER IS EXPECTED. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED.
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 15, 5:22 AM CST | Red Flag Warning | HGX | Austin, Brazoria, Brazos, Burleson, Chambers, Colorado and 17 more | 11 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.