May Weather Discussion.

[weatherguy425]

Outflow now being spit out by both storm complexes.

[wxdata]

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
918 PM CDT MON MAY 17 2010

TXC339-180245-
/O.CON.KHGX.SV.W.0030.000000T0000Z-100518T0245Z/
MONTGOMERY TX-
918 PM CDT MON MAY 17 2010

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM CDT
FOR MONTGOMERY COUNTY...

AT 916 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
MONTGOMERY...OR 12 MILES WEST OF WILLIS...AND MOVING EAST AT 15 MPH.

* LOCATIONS IN THE THE SEVERE THUNDERSTORM WARNING INCLUDE BUT ARE
NOT LIMITED TO LAKE CONROE DAM...PANORAMA VILLAGE AND CONROE

[wxdata]

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
918 PM CDT MON MAY 17 2010

THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
NORTHWESTERN HARRIS COUNTY IN SOUTHEAST TEXAS...
SOUTHWESTERN MONTGOMERY COUNTY IN SOUTHEAST TEXAS...
WALLER COUNTY IN SOUTHEAST TEXAS...

* UNTIL 1000 PM CDT

* AT 916 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS
STORM WAS LOCATED NEAR HEMPSTEAD...AND MOVING SOUTHEAST AT 30 MPH.

* LOCATIONS IN THE SEVERE THUNDERSTORM WARNING INCLUDE BUT ARE NOT
LIMITED TO WALLER...PRAIRIE VIEW...PINEHURST AND MAGNOLIA.

[txflagwaver]

Power is back on....looks like rain won't make it this far....

[wxdata]

Radar is showing 50mph+ winds just of the ground near Prairie View

[Rip76]

They're firing.

[wxdata]

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
933 PM CDT MON MAY 17 2010

TXC339-180243-
/O.CAN.KHGX.SV.W.0030.000000T0000Z-100518T0245Z/
MONTGOMERY TX-
933 PM CDT MON MAY 17 2010

...THE SEVERE THUNDERSTORM WARNING FOR MONTGOMERY COUNTY IS
CANCELLED...

THE THUNDERSTORM WHICH PROMPTED THE SEVERE THUNDERSTORM HAS WEAKENED
BELOW SEVERE LEVELS.

[srainhoutx]

Radar is showing 50mph+ winds just of the ground near Prairie View

Heading my way!

[svrwx0503]

The storms entering the northwest side of Harris county look to be developing back to the south quickly. We could see this line move across much of the metro area over the next hour or so.

[biggerbyte]

The storms entering the northwest side of Harris county look to be developing back to the south quickly. We could see this line move across much of the metro area over the next hour or so.

Indeed! Expect much of Harris and Montgomery counties to get hammered tonight.

[wxdata]

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
939 PM CDT MON MAY 17 2010

TXC201-339-473-180300-
/O.CON.KHGX.SV.W.0031.000000T0000Z-100518T0300Z/
MONTGOMERY TX-WALLER TX-HARRIS TX-
939 PM CDT MON MAY 17 2010

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT
FOR HARRIS...WALLER AND MONTGOMERY COUNTIES...

AT 934 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
WALLER...OR NEAR PRAIRIE VIEW...AND MOVING SOUTHEAST AT 30 MPH.

* LOCATIONS IN THE THE SEVERE THUNDERSTORM WARNING INCLUDE BUT ARE
NOT LIMITED TO MONAVILLE...STAGECOACH...PINEHURST...PINE ISLAND...
MAGNOLIA AND HEMPSTEAD

[wxdata]

Storm is either back-building to the southwest or new storms have developed to the southwest of the main storm.

[Rip76]

Strange build up after dark.
What's the trigger? Just instability?

[wxman57]

Strange build up after dark.
What's the trigger? Just instability?

Right now a big trigger is converging outflow boundaries from collapsing storms north and south of Houston. The boundaries converged just NW of Houston and the area is moving SE.

[wxdata]

NWS-

new Severe Thunderstorm Watch to be issued for southern SE TX

[wxdata]

Strange build up after dark.
What's the trigger? Just instability?

Also, MCS' can be like the Energizer Bunny, they keep going and going and going, with darkness be darned..

[wxdata]

New Watch until 5am

[wxdata]

Possible rotation of the storm in NW Harris.

[wxdata]

VIL is down with the storm over NW Harris.

[wxdata]

0z NAM ups rain to nearly 70% Tuesday!