Alert archive / Texas / Wind Advisories in 2015
Wind Advisory 14, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this wind advisory at Nov 17, 2015, 8:20 AM CST for 9 counties in Texas. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- Nov 17, 2015, 8:20 AM CST (14:20 UTC)
- Expired
- Nov 17, 2015, 1:00 PM CST
- In force
- 5 hr
- Issued by
- NWS Houston/Galveston, TX
Counties Brazoria County, TX, Chambers County, TX, Fort Bend County, TX, Galveston County, TX, Harris County, TX, Jackson County, TX, Liberty County, TX, Matagorda County, TX, Wharton County, TX
The radar
The Houston radar (KHGX), 43 km from the middle of the area, began a volume at 14:24 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, 2.3 hours before the alert went out and 237 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
- 1295 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 475 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 230 m²/s²
- 0-3 km storm-relative helicity
- 307 m²/s²
- Significant tornado parameter
- 1.4
- Supercell composite
- 7.5
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 17, 5:32 AM CST, 2 hours 48 minutes earlier.
Area forecast discussion, Nov 17, 5:32 AM CST, 2 hours 48 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
532 AM CST TUE NOV 17 2015
.DISCUSSION...
SEE 12Z AVIATION DISCUSSION.
&&
.AVIATION...
SHRA/TSRA CONTINUE TO DEVELOP IN AREA OF BROAD UPPER LEVEL
DIVERGENCE AND ABUNDANT LOW LEVEL MOISTURE. THE HI RES ARW/NMM
HAVE DONE A GOOD JOB AND WILL USE A TEXAS TECH WRF/ARW/NMM
BLEND. PREV TAF PACKAGE DID A GREAT JOB LINING UP THE TIMING OF
TSRA SO NO CHANGES THERE. 43
&&
.PREV DISCUSSION... /ISSUED 352 AM CST TUE NOV 17 2015/
DISCUSSION...
PCPN STARTING TO RAMP UP ALONG THE DRY LINE OUT WEST AS IT BEGINS
TO MOVE EAST THIS MORNING. FURTHER TO THE NORTH AND WEST...STORMS
ALSO CONTINUING ALONG THE COLD FRONT (WHICH IS ALSO STEADILY MOV-
ING EAST THIS MORNING) AND IS THEN EXPECTED TO MERGE WITH THE DRY
LINE A BIT LATER. HOWEVER WILL HAVE TO KEEP A CLOSER EYE ON THESE
CELLS OUT WEST WITH WPC INDICATING THE POTENTIAL FOR HOURLY RAIN-
FALL RATES UP TO 2" DUE TO TRAINING/CELL MERGERS. IN THE MEANTIME
NO REAL CHANGES WITH THE THINKING THAT THE SQUALL LINE IS CAPABLE
OF PRODUCING SEVERE STORMS AS IT SWEEPS INTO THE AREA THROUGH THE
MORNING HRS.
LOOKING FURTHER AHEAD PROGS NOW TRENDING A BIT MORE COOLER/WETTER
FOR THE WEEKEND. THE AGGRESSIVE RETURN OF LOW-LEVEL MOISTURE JUST
AHEAD OF THE NEXT COLD FRONT FCST TO PRODUCE SCT PCPN FOR SAT. IN
ITS WAKE...MOS TEMPS MUCH COOLER THAN PREVIOUS RUNS AND HAVE ADJ-
USTED GRIDS ACCORDINGLY. WILL HAVE TO SEE IF THIS HOLDS UP AS THE
WEEK PROGRESSES. 41
MARINE...
A TIGHT PRESSURE GRADIENT WILL GRADUALLY WEAK THIS MORNING AS DEEP
LOW PRESSURE OVER THE CENTRAL PLAINS PUSHES NORTHEAST AND AWAY FROM
THE REGION. WILL MAINTAIN THE SCA FOR ALL WATERS THROUGH 00Z. WINDS
SHOULD BEGIN TO DECREASE ONCE THE LINE OF STORMS MOVES THROUGH
DURING THE MID AFTERNOON BUT SEAS MAY TAKE A WHILE TO FULLY SUBSIDE.
A LINE OF STORMS SHOULD MOVE WNW-ESE THRU THE WATERS FROM THE LATE
MORNING THRU THE MID/LATE AFTN HOURS. ASSOCIATED STRONG TO SEVERE
STORMS A GOOD POSSIBILITY AND MARINERS SHOULD PREPARE FOR LOCALLY
HIGH WINDS AND ROUGH SEAS. AN OFFSHORE WIND IS EXPECTED IN THE WAKE
OF THE STORMS.
TIDES LEVELS ARE RUNNING ABOUT 1.50 FT ABOVE NORMAL. ASTRONOMICAL
TIDES ARE ENTERING LOW TIDE SO TOTAL WATER LEVEL SHOULD REMAIN
AROUND 3.0 FEET BEFORE SLOWLY DROPPING LATER THIS AFTERNOON AS
OFFSHORE WINDS DEVELOP IN THE WAKE OF THE STORMS. 43
&&
.PRELIMINARY POINT TEMPS/POPS...
COLLEGE STATION (CLL) 69 48 70 49 72 / 100 0 0 0 0
HOUSTON (IAH) 74 50 73 49 75 / 100 20 0 0 0
GALVESTON (GLS) 74 57 71 60 73 / 90 40 0 0 0
&&
.HGX WATCHES/WARNINGS/ADVISORIES...
TX...NONE.
GM...SMALL CRAFT ADVISORY UNTIL 6 PM CST THIS EVENING FOR THE
FOLLOWING ZONES: GALVESTON BAY...MATAGORDA BAY...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...
WATERS FROM HIGH ISLAND TO FREEPORT OUT 20 NM.
&&
DISCUSSION...41
AVIATION/MARINE...43Hazardous weather outlook, Nov 17, 6:38 AM CST, 1 hour 42 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 638 AM CST TUE NOV 17 2015 GMZ330-335-350-355-370-375-TXZ163-164-176>179-195>200-210>214-226- 227-235>238-181245- AUSTIN-BRAZORIA-BRAZOS-BURLESON-CHAMBERS-COLORADO-FORT BEND- GALVESTON-GALVESTON BAY-GRIMES-HARRIS-HOUSTON-JACKSON-LIBERTY- MADISON-MATAGORDA-MATAGORDA BAY-MONTGOMERY-POLK-SAN JACINTO- TRINITY-WALKER-WALLER-WASHINGTON- 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- WATERS FROM HIGH ISLAND TO FREEPORT OUT 20 NM-WHARTON- 638 AM CST TUE NOV 17 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST TEXAS. .DAY ONE...TODAY AND TONIGHT A POTENT UPPER LEVEL STORM SYSTEM WILL CONTINUE TO AFFECT SOUTHEAST TEXAS THROUGH EARLY AFTERNOON. SOME THUNDERSTORMS WILL BECOME STRONG TO SEVERE WITH STRONG DAMAGING WINDS AS THE PRIMARY SEVERE WEATHER THREAT. ISOLATED TORNADOES WILL ALSO BE POSSIBLE. RAINFALL TOTALS ARE EXPECTED TO AVERAGE 1 TO 2 INCHES WITH ISOLATED AMOUNTS OF 2 TO 4 INCHES POSSIBLE. MINOR FLOODING OF URBAN AREAS AND SUSCEPTIBLE ROADWAYS IS POSSIBLE. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... EMERGENCY MANAGERS AND STORM SPOTTERS SHOULD ALREADY BE ACTIVATED.
In the hours before
Local storm report, Nov 17, 6:37 AM CST, 1 hour 43 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
637 AM CST TUE NOV 17 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0455 AM TSTM WND DMG 12 E COLLEGE STATION 30.60N 96.11W
11/17/2015 GRIMES TX PUBLIC
PROPERTY NEAR FM 174 AROUND 15 MILES SOUTH OF IOLA...
DOWNED TREES... ROOF DAMAGE AND A TRAVEL TRAILER BLOWN
DOWN ON ITS SIDE.
&&
EVENT NUMBER HGX1500553
41Special weather statement, Nov 17, 7:10 AM CST, 1 hour 10 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
710 AM CST TUE NOV 17 2015
TXZ163-164-178-179-171345-
TRINITY TX-SAN JACINTO TX-POLK TX-HOUSTON TX-
710 AM CST TUE NOV 17 2015
...SIGNIFICANT WEATHER ADVISORY FOR EASTERN TRINITY...NORTHERN SAN
JACINTO...EASTERN HOUSTON AND NORTHERN POLK COUNTIES UNTIL 745 AM
CST...
AT 710 AM CST...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM NEAR SEBASTOPOL TO NEAR
CORRIGAN TO 7 MILES EAST OF SEVEN OAKS...AND MOVING NORTHEAST AT 50
MPH.
WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THESE STORMS.
LOCATIONS IMPACTED INCLUDE...
APPLE SPRINGS...CORRIGAN...GROVETON...SEBASTOPOL...MOSCOW AND
CENTRALIA.
THESE STORMS MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 AM CST FOR SOUTHEASTERN
TEXAS.
LAT...LON 3138 9495 3134 9496 3133 9490 3130 9489
3128 9488 3126 9490 3123 9486 3115 9486
3111 9475 3109 9466 3110 9465 3106 9456
3101 9466 3081 9461 3072 9470 3093 9488
3085 9530 3139 9496
TIME...MOT...LOC 1310Z 209DEG 45KT 3093 9522 3098 9486 3082 9474Special weather statement, Nov 17, 7:11 AM CST, 1 hour 9 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 711 AM CST TUE NOV 17 2015 TXZ177-198-199-171345- GRIMES TX-WALKER TX-MONTGOMERY TX- 711 AM CST TUE NOV 17 2015 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN WALKER... NORTHWESTERN MONTGOMERY AND EASTERN GRIMES COUNTIES UNTIL 745 AM CST... AT 710 AM CST...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 8 MILES SOUTHEAST OF ANDERSON...OR 9 MILES EAST OF NAVASOTA...MOVING NORTHEAST AT 50 MPH. WINDS IN EXCESS OF 45 MPH WILL BE POSSIBLE WITH THIS STORM. FUNNEL CLOUDS ARE ALSO POSSIBLE. LOCATIONS IMPACTED INCLUDE... NAVASOTA...ANDERSON...HUNTSVILLE STATE PARK...ROANS PRAIRIE...DACUS AND RICHARDS. A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 AM CST FOR SOUTHEASTERN TEXAS. LAT...LON 3062 9550 3029 9594 3037 9607 3077 9590 TIME...MOT...LOC 1310Z 218DEG 45KT 3038 9593
Special weather statement, Nov 17, 7:14 AM CST, 1 hour 6 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 714 AM CST TUE NOV 17 2015 TXZ197>199-212-171345- GRIMES TX-WALLER TX-WASHINGTON TX-MONTGOMERY TX- 714 AM CST TUE NOV 17 2015 ...SIGNIFICANT WEATHER ADVISORY FOR EASTERN WASHINGTON...NORTH CENTRAL WALLER...WEST CENTRAL MONTGOMERY AND SOUTHEASTERN GRIMES COUNTIES UNTIL 745 AM CST... AT 713 AM CST...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR HEMPSTEAD...MOVING NORTHEAST AT 35 MPH. WIND GUSTS UP TO 45 MPH WILL BE POSSIBLE WITH THIS STORM. FUNNEL CLOUDS ARE ALSO POSSIBLE. LOCATIONS IMPACTED INCLUDE... ANDERSON...PLANTERSVILLE AND DACUS. A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 AM CST FOR SOUTHEASTERN TEXAS. LAT...LON 3013 9599 3015 9611 3056 9599 3045 9570 TIME...MOT...LOC 1313Z 205DEG 32KT 3018 9603
Special weather statement, Nov 17, 7:57 AM CST, 23 minutes before
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</html>Special weather statement, Nov 17, 8:10 AM CST, 10 minutes before
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</html>The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 17, 2:55 AM CST | Special Weather Statement | HGX | Burleson | 50 min |
| Nov 17, 3:39 AM CST | Severe Thunderstorm Warning | HGX | Burleson, Washington | 36 min |
| Nov 17, 4:06 AM CST | Tornado Warning | HGX | Brazos, Burleson, Grimes, Washington | 24 min |
| Nov 17, 4:14 AM CST | Tornado Warning | HGX | Brazos, Burleson, Grimes, Washington | 46 min |
| Nov 17, 4:16 AM CST | Tornado Warning | HGX | Brazos, Burleson, Grimes, Washington | 44 min |
| Nov 17, 4:51 AM CST | Special Weather Statement | HGX | Houston, Trinity, Walker | 54 min |
| Nov 17, 4:55 AM CST | Severe Thunderstorm Warning | HGX | Brazos, Grimes, Madison, Walker | 17 min |
| Nov 17, 5:20 AM CST | Special Weather Statement | HGX | Brazos, Burleson, Washington | 55 min |
| Nov 17, 5:45 AM CST | Special Weather Statement | HGX | Houston | 45 min |
| Nov 17, 6:04 AM CST | Special Weather Statement | HGX | Austin, Colorado | 56 min |
| Nov 17, 6:18 AM CST | Special Weather Statement | HGX | Polk, San Jacinto | 57 min |
| Nov 17, 6:24 AM CST | Areal Flood Advisory | HGX | Austin, Colorado, Washington | 3 hr |
| Nov 17, 6:36 AM CST | Special Weather Statement | HGX | Brazos, Burleson | 54 min |
| Nov 17, 7:10 AM CST | Special Weather Statement | HGX | Trinity | 35 min |
| Nov 17, 7:11 AM CST | Special Weather Statement | HGX | Grimes | 34 min |
| Nov 17, 7:14 AM CST | Special Weather Statement | HGX | Grimes | 31 min |
| Nov 17, 7:35 AM CST | Tornado Warning | HGX | Grimes, Montgomery, Walker | 25 min |
| Nov 17, 7:57 AM CST | Special Weather Statement | HGX | Trinity | 63 min |
| Nov 17, 8:04 AM CST | Severe Thunderstorm Warning | HGX | Houston, San Jacinto, Trinity, Walker | 41 min |
| Nov 17, 8:10 AM CST | Special Weather Statement | HGX | Walker | 50 min |
| Nov 17, 8:50 AM CST | Special Weather Statement | HGX | Trinity | 40 min |
| Nov 17, 8:57 AM CST | Severe Thunderstorm Warning | HGX | Houston, Polk, San Jacinto, Trinity, Walker | 48 min |
| Nov 17, 9:04 AM CST | Areal Flood Advisory | HGX | Houston, San Jacinto, Trinity, Walker | 3 hr |
| Nov 17, 10:19 AM CST | Areal Flood Advisory | HGX | Grimes, Montgomery, Trinity, Walker, Waller, Washington | 3 hr |
| Nov 17, 11:00 AM CST | Special Weather Statement | HGX | Harris | 45 min |
| Nov 17, 11:30 AM CST | Special Marine Warning | HGX | 90 min | |
| Nov 17, 11:50 AM CST | Special Weather Statement | HGX | Brazoria, Chambers, Matagorda | 70 min |
| Nov 17, 1:00 PM CST | Special Weather Statement | HGX | Galveston | 30 min |
| Nov 17, 1:07 PM CST | Special Marine Warning | HGX | 113 min |
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.