Wx Infinity Forums

Update from Jeff:

Line of strong storms extends from Lufkin to Jersey Village to Richmond to Palacios.



Radar shows several bowing line segments which could produce wind damage with little or no warning. First segment is over NW Harris County moving toward Tomball. Second segment is over northern Fort Bend County moving toward Sugar Land and SW Harris County and the third and strongest is over SE Wharton county moving toward western and southwestern Fort Bend County. These many bows may be capable of transporting stronger winds aloft to the surface.



The line continues to move eastward at 10-15mph under the influence of a surface cold pool which is helping to shove the line on eastward even under increasingly parallel upper level flow conditions. At some point the line is going to run out of forward momentum and pull up stationary, but it is likely this will be just east of our area. Will continue to watch radar trends closely. A quick 1-2 inches of rainfall is likely with the line.

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
745 AM CDT TUE MAR 20 2012

THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A

* TORNADO WARNING FOR...
CENTRAL HARRIS COUNTY IN SOUTHEAST TEXAS...

* UNTIL 815 AM CDT

* AT 741 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS TORNADO
WAS LOCATED NEAR BUNKER HILL VILLAGE... MOVING NORTHEAST AT 30 MPH.

* LOCATIONS IN THE TORNADO WARNING INCLUDE BUT ARE NOT LIMITED TO THE
GALLERIA AND PINEY POINT VILLAGE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN THE INTERIOR HALLWAY OR
A ROOM SUCH AS A CLOSET ON THE LOWEST LEVEL OF A STURDY BUILDING. USE
BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM
WINDOWS.

IF YOU ARE INSIDE A MOBILE HOME OR VEHICLE...EVACUATE THEM
IMMEDIATELY AND SEEK SHELTER INSIDE A STURDY BUILDING. AS A LAST
RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW SPOT AND COVER YOUR
HEAD WITH YOUR HANDS.

A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 9 AM CDT FOR THE
WARNED AREA.

HGX issues Flood Advisory for Western Harris and Western Montgomery Counties. From Jeff:

Radar indicates strong rotation near I-10 and Beltway 8.



Tornado Warning has been issued for Harris County until 815am.



Locations in the path of this storm include: Downtown Houston, Heights, Bunker Hill, The Galleria.\



Also: Urban Flood Advisory issued for Harris and Montgomery counties until 1045am.

srainhoutx wrote:SHORT TERM FORECAST
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
733 AM CDT TUE MAR 20 2012

{snip}

MONTGOMERY-LIBERTY-WALLER-HARRIS-CHAMBERS-WHARTON-FORT BEND-
JACKSON-MATAGORDA-BRAZORIA-GALVESTON-
INCLUDING THE CITIES OF...SHEPHERD...COLDSPRING...LIVINGSTON...
CORRIGAN...ONALASKA...THE WOODLANDS...CONROE...WILLIS...LIBERTY...
CLEVELAND...DAYTON...HEMPSTEAD...PRAIRIE VIEW...BROOKSHIRE...
HOUSTON...PASADENA...KATY...TOMBALL...HUMBLE...WINNIE...
MONT BELVIEU...ANAHUAC...EL CAMPO...WHARTON...PIERCE...
SUGAR LAND...MISSOURI CITY...RICHMOND...ROSENBERG...EDNA...
BAY CITY...PALACIOS...PEARLAND...LAKE JACKSON...ALVIN...
ANGLETON...FREEPORT...LEAGUE CITY...TEXAS CITY...FRIENDSWOOD...
GALVESTON
733 AM CDT TUE MAR 20 2012

So....it's going to go right around Spring, huh? It'll move through Tomball, The Woodlands, then on to Humble and go riiiiight around Spring.

Getting very dark with sheet lightening in downtown. Radar shows small bow echo creating the Tornado Warning approaching downtown.

HGX issues Flood Advisory for Austin, Burleson and Washinton Counties

Portastorm reports 2 Hill Country Lakes have open their flood gates due to heavy rainfall over night. It's been ages since that occurred!

I'm in the Wall Cloud in West Houston... rain just wrapped in from the NNE from the SW

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
817 AM CDT TUE MAR 20 2012

THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A

* TORNADO WARNING FOR...
NORTHERN BRAZORIA COUNTY IN SOUTHEAST TEXAS...

* UNTIL 900 AM CDT

* AT 816 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS
TORNADO WAS LOCATED NEAR MANVEL...MOVING EAST AT 25 MPH.

* LOCATIONS IN THE TORNADO WARNING INCLUDE BUT ARE NOT LIMITED TO
PEARLAND AND IOWA COLONY.

First, Pearland folks, watch out....


Secondly, here's a shot of the Bunker Hill wall cloud I took this morning:

Blasting rains in downtown Houston. Must be gusting at least 50MPH.

Great pic...should post it in the picture section!

Really, really, really dark in the Gulfgate area. Rain coming down hard...

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
834 AM CDT TUE MAR 20 2012

TXZ199-200-213-201430-
HARRIS-LIBERTY-MONTGOMERY-
834 AM CDT TUE MAR 20 2012

...SIGNIFICANT WEATHER ADVISORY...

AT 832 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM HUMBLE TO 6 MILES
NORTHWEST OF JACINTO CITY TO SOUTH HOUSTON...MOVING EAST AT 30 MPH.

WINDS UP TO 50 MPH...FREQUENT CLOUD TO GROUND LIGHTNING...BRIEF
MODERATE DOWNPOURS...ARE POSSIBLE WITH THESE STORMS.

LOCATIONS IN THE PATH OF THESE STORMS INCLUDE...PORTER...NEW CANEY...
LAKE HOUSTON DAM...SOUTH HOUSTON...PLUM GROVE...PASADENA...
KINGWOOD...JACINTO CITY...HUMBLE...HIGHLANDS...GALENA PARK...DEER
PARK...CLOVERLEAF...CHANNELVIEW AND BARRETT.

HGX extends Severe Thunderstorm Watch until 10:00AM for Chambers, Galveston and Liberty Counties

Look at that moderate to heavy blob of rain training over Brazos, Burleson, Waller, Austin and Colorado Counties.

After this rain, I could go a couple weeks of dry weather, and NOT HUMID, to dry the grass out so I can mow and do some yard work. Snakes are already out in my neck of the woods.

Looks like line is slowing down. I am now starting to see training on the SE side of Harris county. Main line of storm that moved through downtown earlier looks like it detached a bit from the main line and moved NE/NNE. Now another bow echo'ish is coming from the South to NE/NNE. Folks in Pasadena, Webster, League City, Deer Park, Baytown, Pearland: heads up! This will probably be where most of the flooding will occur where it looks like as of now. Glad the severe part has decreased a bit.

Expecting a flood warning to be issued soon at this rate of rainfall falling and not moving much.

I was just about to post that it looks like it's slowing down.

The line should slow down as it reaches Beaumont to Lake Charles area, but I don't see too much slowing yet. Could be a much heavier rain event east of Houston. So far, the line has produced from 0.75 to 1.75" of rain across the city. Not that big of a deal for us, but watch out in SW LA where it really slows down.