April 2015: Pleasant Weather To End April

Fri Apr 17, 2015 6:12 pm

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
610 PM CDT FRI APR 17 2015

AUSTIN TX-HARRIS TX-WALLER TX-FORT BEND TX-
610 PM CDT FRI APR 17 2015

...SPECIAL WEATHER STATEMENT...

AT 609 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM
OVER KATY...MOVING NORTH AT 40 MPH. THE STORM IS ALSO PRODUCING
FREQUENT CLOUD TO GROUND LIGHTNING.

WINDS IN EXCESS OF 35 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
KATY...BROOKSHIRE...ELDRIDGE / WEST OAKS...SOUTHWESTERN ADDICKS PARK
TEN...FULSHEAR...PATTISON...CINCO RANCH AND MONAVILLE.

Fri Apr 17, 2015 6:16 pm

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
614 PM CDT FRI APR 17 2015

THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
SOUTH CENTRAL COLORADO COUNTY IN SOUTHEASTERN TEXAS...
SOUTHWESTERN WHARTON COUNTY IN SOUTHEASTERN TEXAS...
CENTRAL JACKSON COUNTY IN SOUTH CENTRAL TEXAS...

* UNTIL 815 PM CDT

* AT 613 PM CDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. 2.5 TO 3 INCHES OF RAIN HAVE
FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
EL CAMPO...EDNA...GANADO...PIERCE...EGYPT...MORALES...LOUISE...
GARWOOD...CORDELE AND NADA.

Fri Apr 17, 2015 6:20 pm

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
618 PM CDT FRI APR 17 2015

COLORADO TX-WHARTON TX-JACKSON TX-MATAGORDA TX-
618 PM CDT FRI APR 17 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM CDT
FOR SOUTHERN COLORADO...SOUTHWESTERN WHARTON...EASTERN JACKSON AND
WEST CENTRAL MATAGORDA COUNTIES...

AT 617 PM CDT...DOPPLER RADAR INDICATED A LINE OF SEVERE
THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING
WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 9 MILES SOUTHEAST OF WEIMAR TO 6 MILES NORTHWEST OF
EL CAMPO TO 7 MILES SOUTH OF GANADO...MOVING EAST AT 45 MPH. THE
MOST INTENSE PART OF THE STORM WAS MOVING INTO EL CAMPO.

LOCATIONS IMPACTED INCLUDE...
EL CAMPO...EDNA...GANADO...LA WARD...PIERCE...LOLITA...LAKE TEXANA
DAM...LOUISE...ALTAIR...ROCK ISLAND...GARWOOD...VANDERBILT AND NADA.

Fri Apr 17, 2015 6:22 pm

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
621 PM CDT FRI APR 17 2015

THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
WEST CENTRAL BRAZORIA COUNTY IN SOUTHEASTERN TEXAS...
COLORADO COUNTY IN SOUTHEASTERN TEXAS...
WHARTON COUNTY IN SOUTHEASTERN TEXAS...
SOUTHEASTERN AUSTIN COUNTY IN SOUTHEASTERN TEXAS...
EAST CENTRAL JACKSON COUNTY IN SOUTH CENTRAL TEXAS...
SOUTHWESTERN WALLER COUNTY IN SOUTHEASTERN TEXAS...
WESTERN FORT BEND COUNTY IN SOUTHEASTERN TEXAS...
NORTHWESTERN MATAGORDA COUNTY IN SOUTHEASTERN TEXAS...

* UNTIL 700 PM CDT

* AT 620 PM CDT...DOPPLER RADAR INDICATED A LINE OF SEVERE
THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM NEAR
COLUMBUS TO NEAR EL CAMPO TO LOLITA...AND MOVING NORTHEAST AT 45
MPH. THIS STORM HAS A HISTORY OF PRODUCING WIND DAMAGE IN JACKSON
COUNTY EARLIER THIS EVENING.

* LOCATIONS IMPACTED INCLUDE...
WESTERN ROSENBERG...BAY CITY...EL CAMPO...WHARTON...SEALY...
SWEENY...COLUMBUS...EAGLE LAKE...NEEDVILLE...EAST BERNARD...
WALLIS...SIMONTON...SAN FELIPE...BEASLEY...KENDLETON...ORCHARD...
MARKHAM...VAN VLECK...PIERCE AND BOLING-LAGO.

Fri Apr 17, 2015 6:31 pm

Urban Flood Advisory about to be issued. Katy has picked .76 of rain in 15 minutes.

Fri Apr 17, 2015 6:33 pm

FLOOD ADVISORY
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
632 PM CDT FRI APR 17 2015

COLORADO TX-WHARTON TX-HARRIS TX-AUSTIN TX-WALLER TX-FORT BEND TX-
632 PM CDT FRI APR 17 2015

THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A

* FLOOD ADVISORY FOR...
EAST CENTRAL COLORADO COUNTY IN SOUTHEASTERN TEXAS...
NORTHEASTERN WHARTON COUNTY IN SOUTHEASTERN TEXAS...
WEST CENTRAL HARRIS COUNTY IN SOUTHEASTERN TEXAS...
SOUTHEASTERN AUSTIN COUNTY IN SOUTHEASTERN TEXAS...
SOUTHEASTERN WALLER COUNTY IN SOUTHEASTERN TEXAS...
NORTHWESTERN FORT BEND COUNTY IN SOUTHEASTERN TEXAS...

* UNTIL 830 PM CDT

* AT 630 PM CDT...DOPPLER RADAR INDICATED HEAVY RAIN DUE TO
THUNDERSTORMS. THIS WILL CAUSE MINOR FLOODING IN THE ADVISORY AREA.
UP TO 2 INCHES OF RAIN HAVE FALLEN.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
ROSENBERG...KATY...RICHMOND...WHARTON...SEALY...BROOKSHIRE...EAGLE
LAKE...PECAN GROVE...MISSION BEND...SOUTHWESTERN ELDRIDGE / WEST
OAKS...EAST BERNARD...WALLIS...FULSHEAR...PLEAK...SIMONTON...SAN
FELIPE...BEASLEY...PATTISON...KENDLETON AND ORCHARD.

Fri Apr 17, 2015 6:43 pm

From Nesdis:

SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 04/17/15 2338Z
SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-683-1404
LATEST DATA USED: GOES-EAST:2315Z JS
.
LOCATION...S CENT TO SE TEXAS...
.
ATTN WFOS...LCH...HGX...CRP...EWX...BRO...
ATTN RFCS...WGRFC...
.
EVENT...UPDATE TO PREVIOUS SPENES MESSAGES FOR CONVECTIVE OUTLOOK/HEAVY
RAIN POTENTIAL.
.
SATELLITE ANALYSIS AND TRENDS...ORIGINAL MCS CONTINUES TO BOW FORWARD
AND MERGE WITH ACTIVITY DEVELOPING JUST AHEAD OF IT ALONG THE COASTAL
TROF/WESTWARD EXTENSION OF OLD SFC BOUNDARY WITH RESULTANT BATCH OF VERY
INTENSE RAINFALL APPROACHING HOUSTON. THE ATTENTION NOW TURNS TO THE
TRAILING OUTFLOW SET DOWN BY THIS COMPLEX AND THE NEW UPWIND DEVELOPMENT
TAKING PLACE ALONG AND NEAR THIS BOUNDARY. HAVE SEEN EVIDENCE THROUGH THE
GOES SOUNDER PRODUCTS AND RAP ANALYSIS OF RELATIVE INSTABILITY RESERVOIR
PRESENT OVER SW TX AND MEXICO JUST TO THE S AND SW OF THE AREA OF NEW
UPWIND DEVELOPMENT ALONG THE OUTFLOW BOUNDARY. NOTED RECENT SPC SWOMCD
WHICH REFERENCES THIS BOUNDARY AND THE UPSTREAM ENVIRONMENT OVER SW
TX/MEXICO. CONCERN WITH RESPECT TO HEAVY RAINFALL IS GROWING WITH MEAN
FLOW ROUGHLY ALIGNED PARALLEL TO THIS BOUNDARY WHICH IS ENCOURAGING CELL
TRAINING WHICH IS NOT EXCEPTIONALLY ORGANIZED TO THIS POINT. WATER VAPOR
ANIMATION STILL POINTS TOWARD VERY DIFFLUENT FLOW ALOFT WITH SPLIT IN
SUBTROPICAL FLOW AND EVIDENCE OF STRUNG OUT UPSTREAM MID/UPPER LEVEL
SHORTWAVE OVER MEXICO STILL DEPICTED IN THE CIRA 500-300MB LAYERED TPW
PRODUCT ALONG WITH APPARENT UPPER LEVEL SPEED MAX OVER DURANGO/COAHULA
IN CENT MEXICO AIMED DIRECTLY TOWARD THE SW END OF THE ONGOING ACTIVITY
OVER S TX. THIS SITUATION SHOULD BE CLOSELY WATCHED FOR AT LEAST THE
NEXT SEVERAL HOURS IF NOT BEYOND WITH UPSTREAM INSTABILITY AND POTENTIAL
TRIGGERS FOR ADDITIONAL CONVECTIVE DEVELOPMENT LURKING. PLEASE REFER TO
WPC QPF AND ANY ADDITIONAL WPC MPD'S FOR FURTHER INFORMATION.

Fri Apr 17, 2015 6:49 pm

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
647 PM CDT FRI APR 17 2015

THE NATIONAL WEATHER SERVICE IN CORPUS CHRISTI HAS ISSUED A

* TORNADO WARNING FOR...
CENTRAL BEE COUNTY IN SOUTH CENTRAL TEXAS...

* UNTIL 715 PM CDT

* AT 646 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED
2 MILES SOUTHWEST OF BEEVILLE...AND MOVING EAST AT 30 MPH.

IN ADDITION...GOLF BALL SIZED HAIL WILL OCCUR WITH THIS STORM.

* LOCATIONS IMPACTED INCLUDE...
BEEVILLE.

Fri Apr 17, 2015 6:57 pm

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
656 PM CDT FRI APR 17 2015

THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
BRAZORIA COUNTY IN SOUTHEASTERN TEXAS...
EASTERN WHARTON COUNTY IN SOUTHEASTERN TEXAS...
SOUTHWESTERN HARRIS COUNTY IN SOUTHEASTERN TEXAS...
SOUTHEASTERN AUSTIN COUNTY IN SOUTHEASTERN TEXAS...
WEST CENTRAL GALVESTON COUNTY IN SOUTHEASTERN TEXAS...
SOUTHEASTERN WALLER COUNTY IN SOUTHEASTERN TEXAS...
FORT BEND COUNTY IN SOUTHEASTERN TEXAS...
NORTHEASTERN MATAGORDA COUNTY IN SOUTHEASTERN TEXAS...

* UNTIL 745 PM CDT

* AT 655 PM CDT...DOPPLER RADAR INDICATED A LINE OF SEVERE
THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM NEAR
EAST BERNARD TO NEAR BRAZORIA...AND MOVING NORTHEAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
WESTERN PEARLAND...SUGAR LAND...MISSOURI CITY...ROSENBERG...LAKE
JACKSON...ALVIN...ANGLETON...STAFFORD...BAY CITY...KATY...
RICHMOND...WHARTON...HITCHCOCK...MANVEL...WEST COLUMBIA...SWEENY...
MEADOWS...FRESNO...TOWN WEST AND PECAN GROVE.

Fri Apr 17, 2015 7:00 pm

Tornado Watch issued for portions of South Central/SE Texas until 2:00AM CDT. Jackson and Matagorda Counties are included in the Watch.

04172015 ww0070_overview_wou.gif

Fri Apr 17, 2015 7:05 pm

Code: Select all

WATCH COUNTY NOTIFICATION FOR WATCHES 68/70
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
658 PM CDT FRI APR 17 2015

THE NATIONAL WEATHER SERVICE HAS ISSUED TORNADO WATCH 70 UNTIL
2 AM CDT SATURDAY WHICH REPLACES A PORTION OF SEVERE THUNDERSTORM
WATCH 68. THE NEW WATCH IS VALID FOR THE FOLLOWING AREAS

IN SOUTHEAST TEXAS THE NEW WATCH INCLUDES 2 COUNTIES

JACKSON               MATAGORDA             

THIS INCLUDES THE CITIES OF...BAY CITY...EDNA AND PALACIOS.

$$
THE NATIONAL WEATHER SERVICE HAS ISSUED TORNADO WATCH 70 UNTIL
2 AM CDT SATURDAY WHICH REPLACES A PORTION OF SEVERE THUNDERSTORM
WATCH 68. THE NEW WATCH IS VALID FOR THE FOLLOWING AREAS

THE NEW WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS

MATAGORDA BAY         
WATERS FROM FREEPORT TO THE MATAGORDA SHIP CHANNEL OUT 20 NM     

$$

SEVERE THUNDERSTORM WATCH 68 REMAINS VALID UNTIL 10 PM CDT THIS
EVENING FOR THE FOLLOWING AREAS

IN SOUTHEAST TEXAS THIS WATCH INCLUDES 14 COUNTIES

AUSTIN                BRAZORIA              BRAZOS               
BURLESON              CHAMBERS              COLORADO             
FORT BEND             GALVESTON             GRIMES               
HARRIS                MONTGOMERY            WALLER               
WASHINGTON            WHARTON               

THIS INCLUDES THE CITIES OF...ALVIN...ANAHUAC...ANGLETON...
BELLVILLE...BRENHAM...BROOKSHIRE...BRYAN...CALDWELL...
COLLEGE STATION...COLUMBUS...CONROE...EAGLE LAKE...EL CAMPO...
FREEPORT...FRIENDSWOOD...GALVESTON...HEMPSTEAD...HOUSTON...
HUMBLE...KATY...LAKE JACKSON...LAKE SOMERVILLE...LEAGUE CITY...
MISSOURI CITY...MONT BELVIEU...NAVASOTA...PASADENA...PEARLAND...
PIERCE...PRAIRIE VIEW...RICHMOND...ROSENBERG...SEALY...
SUGAR LAND...TEXAS CITY...THE WOODLANDS...TOMBALL...WEIMAR...
WHARTON...WILLIS AND WINNIE.

$$

SEVERE THUNDERSTORM WATCH 68 REMAINS VALID UNTIL 10 PM CDT THIS
EVENING FOR THE FOLLOWING AREAS

THIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS

GALVESTON BAY         
WATERS FROM HIGH ISLAND TO FREEPORT OUT 20 NM                    

$$

Fri Apr 17, 2015 7:09 pm

Supercells lining up West to East from Eagle Pass where the new Tornado Watch was just issued.

Fri Apr 17, 2015 7:10 pm

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
709 PM CDT FRI APR 17 2015

THE NATIONAL WEATHER SERVICE IN CORPUS CHRISTI HAS ISSUED A

* TORNADO WARNING FOR...
SOUTH CENTRAL GOLIAD COUNTY IN SOUTH CENTRAL TEXAS...
WEST CENTRAL REFUGIO COUNTY IN SOUTH CENTRAL TEXAS...
SOUTHEASTERN BEE COUNTY IN SOUTH CENTRAL TEXAS...

* UNTIL 745 PM CDT

* AT 708 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 8
MILES NORTHEAST OF SKIDMORE...AND MOVING EAST AT 25 MPH.

IN ADDITION...GOLF BALL SIZED HAIL WILL OCCUR WITH THIS STORM.

* LOCATIONS IMPACTED INCLUDE...
BLANCONIA.

Fri Apr 17, 2015 7:14 pm

Looks like it will be a long evening/night for us. Stay safe everyone. Turn around, don't drown!

Fri Apr 17, 2015 7:18 pm

Folks in Ft Bend, Brazoria and Galveston Counties heads up. Rotation being detected along the bow echo.

Fri Apr 17, 2015 7:19 pm

we sort of lucked out here, the stuff coming up from the south kind of deflected the worst of it out of our path, so far... still raining, of course, but nothing severe, so far...

Fri Apr 17, 2015 7:20 pm

Report: possible brief tornado touchdown in Clemville...10 miles west of Bay City.

Fri Apr 17, 2015 7:21 pm

FLOOD ADVISORY
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
720 PM CDT FRI APR 17 2015

COLORADO TX-WASHINGTON TX-AUSTIN TX-WALLER TX-
720 PM CDT FRI APR 17 2015

THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A

* FLOOD ADVISORY FOR...
NORTHEASTERN COLORADO COUNTY IN SOUTHEASTERN TEXAS...
SOUTHEASTERN WASHINGTON COUNTY IN SOUTHEASTERN TEXAS...
AUSTIN COUNTY IN SOUTHEASTERN TEXAS...
CENTRAL WALLER COUNTY IN SOUTHEASTERN TEXAS...

* UNTIL 1015 PM CDT

* AT 719 PM CDT...DOPPLER RADAR INDICATED HEAVY RAIN DUE TO
THUNDERSTORMS. THIS WILL CAUSE MINOR FLOODING IN THE ADVISORY AREA.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
SEALY...HEMPSTEAD...BELLVILLE...COLUMBUS...PINE ISLAND...SAN
FELIPE...INDUSTRY...FRELSBURG...MONAVILLE...ALTAIR...CAT SPRING AND
NEW ULM.

Fri Apr 17, 2015 7:25 pm

Significant bow echo with damaging winds likely. Keep aware of the weather during the next 1-2 hours from Houston metro to the coast.

Fri Apr 17, 2015 7:41 pm

04172015 mcd0346.gif

MESOSCALE DISCUSSION 0346
NWS STORM PREDICTION CENTER NORMAN OK
0739 PM CDT FRI APR 17 2015

AREAS AFFECTED...UPPER GULF COAST OF SE TX AND SABINE VALLEY

CONCERNING...SEVERE THUNDERSTORM WATCH 68...

VALID 180039Z - 180215Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 68
CONTINUES.

SUMMARY...RISK FOR DAMAGING WINDS...MARGINALLY SEVERE HAIL AND A
BRIEF TORNADO WILL PERSIST WITH A TSTM CLUSTER APPROACHING THE SRN
HOUSTON METRO AND GALVESTON BAY. UNCERTAINTY DOES EXIST WITH HOW FAR
EAST THIS RISK WILL PERSIST BEYOND WW 68. MONITORING FOR POSSIBLE
DOWNSTREAM WW ISSUANCE OVER THE SABINE VALLEY.

DISCUSSION...AREAL EXTENT OF 50-DBZ BASE REFLECTIVITY HAS DIMINISHED
WITH SLOWING OF FORWARD SPEED TO 35-40 KT. HOWEVER...WITH A SWATH OF
45-55 KT INBOUND VELOCITIES...DAMAGING WINDS WILL BE THE PRIMARY
HAZARD. A BRIEF TORNADO MAY ALSO OCCUR GIVEN THE STRUCTURE OF THE
MCV AND SATURATED TROPICAL THERMODYNAMIC PROFILES COINCIDENT WITH
SUBSTANTIAL VEERING OF THE DEEP-LAYER WIND PROFILE WITH HEIGHT.

DESPITE A LARGE SWATH OF LEADING STRATIFORM RAIN EXTENDING NEAR THE
MOUTH OF THE SABINE RIVER...00Z LCH RAOB STILL DEPICTED MODERATE
BUOYANCY AMIDST 700-500 MB LAPSE RATES AROUND 7 DEG C/KM. WITH
STRONG MID/HIGH-LEVEL W/SWLYS EVIDENT IN HGX VWP DATA SUPPORTING
60+-KT EFFECTIVE SHEAR...THIS CLUSTER WILL PROBABLY REMAIN ORGANIZED
AS IT EVOLVES ALONG THE UPPER TX COAST THROUGH 03Z. WHETHER THIS
RISK SHIFTS OFFSHORE OR REACHES COUNTIES E OF WW 68 IS UNCERTAIN.

..GRAMS/CORFIDI.. 04/18/2015

ATTN...WFO...LCH...HGX...

April 2015: Pleasant Weather To End April

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