Severe Thunderstorm Warning 41, NWS Houston/Galveston, TX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
635 PM CDT SUN APR 19 2015

.AVIATION...
WILL BE DEALING WITH A COUPLE HOURS OF SHRA/TSRA FOR TAF SITES FROM
UTS SOUTHWARD TO SGR AND HOU. THESE STORMS ARE AHEAD OF AN APPROACHING
COLD FRONT THAT WILL MOVE ACROSS THE AREA TONIGHT AND SWING WINDS
AROUND TO THE NORTHWEST AND NORTH. SKIES WILL CLEAR OUT OVERNIGHT AS
A DRIER AIRMASS FILTERS IN BEHIND THE COLD FRONT. SOME MID/HIGH
LEVELS CLOUDS ARE STILL EXPECTED TO MOVE BACK INTO THE AREA FROM
THE SOUTHWEST DURING THE DAY TOMORROW.  42
&&

.PREV DISCUSSION... /ISSUED 327 PM CDT SUN APR 19 2015/

DISCUSSION...
A PREFRONTAL TROUGH WAS APPROACHING THE CALDWELL AND BRYAN/COLLEGE
STATION AT 3 PM. THIS WAS COINCIDING WITH THE LEFT-FRONT QUADRANT
OF THE SUBTROPICAL JET PUSHING ACROSS THE STATE. THE TEXAS TECH
WRF...HRRR...AND NAM12 AGREE WITH A LINE OF SHOWERS AND
THUNDERSTORMS TO MOVE THROUGH AT LEAST THE NORTHERN HALF OF THE
FORECAST AREA THIS AFTERNOON AND EVENING. BREEZY WEST TO SOUTHWEST
WINDS WERE IN PLACE AHEAD OF THE FRONT...AND MODEL SOUNDING
FORECAST CAPE VALUES WERE AROUND 4600. BECAUSE OF THIS...FELT THAT
ISOLATED SEVERE STORMS WILL HAVE LARGE HAIL AND DAMAGING WINDS AS
THE MAIN THREATS. THE TIMING OF THE FRONT LOOKS TO BE ABOUT THE
SAME AS EARLIER FORECASTED AND ONLY MADE MINOR TWEAKS TO THE WIND
FORECAST. DO EXPECT THE RAIN AND THUNDERSTORM CHANCES TO MOVE OFF
THE COAST BY LATE THIS EVENING.

AFTER THE COLD FRONT MOVES THROUGH...A SURFACE HIGH WILL BUILD
INTO SE TEXAS ON MONDAY AND TUESDAY. RETURN FLOW OFF THE GULF WILL
OCCUR BY LATE TUESDAY. BOTH THE GFS AND ECMWF DEVELOP A DOWNSTREAM
RIDGE OVER TEXAS WITH AN UPPER LOW MOVING ACROSS SOUTHERN CA AND
BAJA CA INLAND TO NORTHWESTERN MEXICO AND AZ/NM BETWEEN WEDNESDAY
AND FRIDAY. BOTH MODELS SHEAR THE UPPER SYSTEM OUT AS IT MOVES
NORTHEASTWARD INTO THE SOUTHERN PLAINS ON FRIDAY AND SATURDAY WITH
THE ECMWF GENERATING A STRONGER SYSTEM AND BETTER CHANCES OF RAIN
INTO SE TEXAS AHEAD OF ANOTHER COLD FRONT THAT WILL MOVE THROUGH
LATE SATURDAY. TOOK A CONSENSUS OF THE MODELS.

40

MARINE...
A COLD FRONT WILL REACH THE UPPER TEXAS COAST LATE TONIGHT...MAY
NEED CAUTION FLAGS AFTER 4AM OR TOWARD MORNING AS OFFSHORE FLOW
INCREASES. MODERATE OFFSHORE WINDS IN THE WAKE OF THE COLD FRONT
WILL DIMINISH MONDAY AFTERNOON. ONSHORE FLOW RESUMES BY TUESDAY AS
HIGH PRESSURE MOVES OFF TO THE EAST. 47

&&

.PRELIMINARY POINT TEMPS/POPS...
COLLEGE STATION (CLL)      55  74  55  79  62 /  20   0  10  10  10
HOUSTON (IAH)              61  77  57  80  64 /  30   0   0  10  10
GALVESTON (GLS)            66  77  67  78  71 /  30   0   0  10  10

&&

.HGX WATCHES/WARNINGS/ADVISORIES...
TX...NONE.
GM...NONE.
&&

DISCUSSION...39
AVIATION/MARINE...42

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
649 AM CDT SUN APR 19 2015

TXZ163-164-176>179-195>200-211>213-227-201200-
AUSTIN-BRAZOS-BURLESON-FORT BEND-GRIMES-HARRIS-HOUSTON-LIBERTY-
MADISON-MONTGOMERY-POLK-SAN JACINTO-TRINITY-WALKER-WALLER-
WASHINGTON-
649 AM CDT SUN APR 19 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST TEXAS.

.DAY ONE...TODAY AND TONIGHT
A COLD FRONT MOVING INTO THE AREA LATE THIS AFTERNOON MAY BRING
ISOLATED STRONG TO SEVERE THUNDERSTORMS BETWEEN 2 AND 6 PM. THE
PRIMARY THREAT SHOULD BE STRONG GUSTY WINDS AND POSSIBLY SMALL
HAIL. RAINFALL TOTALS SHOULD AVERAGE LESS THAN 0.25 INCH WITH
ISOLATED AMOUNTS ASSOCIATED WITH THE STRONGER STORMS AROUND 1
INCH.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED.

GMZ335-355-TXZ210-214-226-236>238-201200-
BRAZORIA-CHAMBERS-COLORADO-GALVESTON-GALVESTON BAY-MATAGORDA-
WATERS FROM HIGH ISLAND TO FREEPORT OUT 20 NM-WHARTON-
649 AM CDT SUN APR 19 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST TEXAS.

.DAY ONE...TODAY AND TONIGHT
THUNDERSTORMS MAY ARRIVE AFTER 5 PM BRINGING GUSTY NORTHERLY
WINDS AND FREQUENT LIGHTNING.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

GMZ330-TXZ235-201200-
JACKSON-MATAGORDA BAY-
649 AM CDT SUN APR 19 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST TEXAS.

.DAY ONE...TODAY AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

GMZ350-370-375-201200-
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-
649 AM CDT SUN APR 19 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST TEXAS.

.DAY ONE...TODAY AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
611 PM CDT SUN APR 19 2015

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

0610 PM     HAIL             WALLER                  30.06N  95.92W
04/19/2015  M2.00 INCH       WALLER             TX   PUBLIC

&&

EVENT NUMBER HGX1500115

DO

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
613 PM CDT SUN APR 19 2015

TXZ212-213-227-200000-
HARRIS TX-WALLER TX-FORT BEND TX-
613 PM CDT SUN APR 19 2015

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL HARRIS...
SOUTHEASTERN WALLER AND NORTHERN FORT BEND COUNTIES UNTIL 700 PM
CDT...

AT 612 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
KATY...MOVING EAST AT 20 MPH.

DIME SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
KATY...SPRING BRANCH NORTH...ADDICKS PARK TEN...SPRING BRANCH WEST...
NORTHERN ELDRIDGE / WEST OAKS...WESTBRANCH...CARVERDALE...FAIRBANKS /
NORTHWEST CROSSING AND SPRING BRANCH CENTRAL.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM CDT FOR
SOUTHEASTERN TEXAS.

LAT...LON 2997 9575 2983 9551 2977 9570 2977 9592
      2994 9595
TIME...MOT...LOC 2312Z 260DEG 18KT 2987 9586

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
616 PM CDT SUN APR 19 2015

TXZ163-164-176-177-192345-
MADISON TX-TRINITY TX-WALKER TX-HOUSTON TX-
616 PM CDT SUN APR 19 2015

...SPECIAL WEATHER STATEMENT...

AT 616 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM
CROSSING INTERSTATE 45 ABOUT 12 MILES SOUTHEAST OF MADISONVILLE...
MOVING EAST AT 35 MPH.

UP TO ONE-HALF INCH HAIL WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
NORTHWESTERN HUNTSVILLE...TRINITY...RIVERSIDE AND CRABBS PRAIRIE.

THIS STORM 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 SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM CDT FOR
SOUTHEASTERN TEXAS.

LAT...LON 3105 9537 3087 9532 3086 9533 3078 9534
      3073 9577 3091 9582
TIME...MOT...LOC 2316Z 256DEG 29KT 3084 9574

40

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
621 PM CDT SUN APR 19 2015

TXZ210>212-192345-
AUSTIN TX-WALLER TX-COLORADO TX-
621 PM CDT SUN APR 19 2015

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN COLORADO...CENTRAL
AUSTIN AND SOUTHWESTERN WALLER COUNTIES UNTIL 645 PM CDT...

AT 621 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
FAYETTEVILLE...OR 12 MILES NORTH OF COLUMBUS...MOVING EAST AT 50 MPH.

UP TO NICKEL SIZE HAIL WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
SEALY...BELLVILLE...SAN FELIPE...INDUSTRY...FRELSBURG...CAT SPRING
AND NEW ULM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM CDT FOR
SOUTHEASTERN TEXAS.

LAT...LON 2996 9657 2998 9658 2999 9658 3000 9606
      2970 9609 2979 9669 2983 9669
TIME...MOT...LOC 2321Z 275DEG 43KT 2988 9659

40

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
641 PM CDT SUN APR 19 2015

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

0639 PM     HAIL             HOUSTON                 29.77N  95.39W
04/19/2015  E1.75 INCH       HARRIS             TX   TRAINED SPOTTER

            1.75 INCH HAIL HWY 249 AND LOUETTA RD

&&

EVENT NUMBER HGX1500116

DO

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>