May Weather Discussion.

[wxdata]

Radar shows 50mph winds just off the surface now moving into Cleveland.

[srainhoutx]

Looks like some back building into Montgomery County along the Northern boundary.

[wxdata]

Also, seabreeze approaching storms; may collide over Liberty.

[wxdata]

SPC changes risk area; now includes SE TX

ALSO...OTHER STORMS HAD DEVELOPED ALONG WEAK SURFACE CONVERGENCE
BOUNDARY BETWEEN POE TO CLL. ALTHOUGH DEEP LAYER SHEAR IS ONLY
AROUND 25-30 KT...MLCAPES FROM 2500-3500 J/KG AND A VERY MOIST
BOUNDARY LAYER WILL BE SUPPORTIVE OF SCATTERED STORMS WITH SEVERE
HAIL AND WET MICROBURSTS. POOL OF GREATER INSTABILITY SHOULD ALSO
AID IN STRONG PROPAGATION ON BACKSIDE OF STORMS...SO NET MOTION IS
LIKELY TO BE MORE SWD THAN EWD.

http://www.spc.noaa.gov/products/outloo ... _2000.html

[wxdata]

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

TXC291-339-407-172012-
/O.EXP.KHGX.TO.W.0009.000000T0000Z-100517T2000Z/
SAN JACINTO TX-MONTGOMERY TX-LIBERTY TX-
302 PM CDT MON MAY 17 2010

...THE TORNADO WARNING FOR LIBERTY...MONTGOMERY AND SAN JACINTO
COUNTIES HAS BEEN ALLOWED TO EXPIRE...

[Mrs.Frosty]

I'm in Cleveland , didn't see a tornado but some VERY heavy wind gusts !!!!

[wxdata]

Radar showing outflow racing out storms heading for NE Harris

[wxdata]

I'm in Cleveland , didn't see a tornado but some VERY heavy wind gusts !!!!

Thanks for the report. Radar did show very strong winds as the storm moved through Cleveland.

[wxdata]

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

THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
NORTHERN POLK COUNTY IN SOUTHEAST TEXAS...
SOUTHEASTERN TRINITY COUNTY IN SOUTHEAST TEXAS...

* UNTIL 400 PM CDT

* AT 311 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 7
MILES NORTH OF CORRIGAN TO 6 MILES NORTH OF GROVETON...OR ALONG A
LINE EXTENDING FROM 6 MILES SOUTH OF DIBOLL TO 11 MILES SOUTHWEST
OF APPLE SPRINGS...AND MOVING SOUTHEAST AT 15 MPH.

* LOCATIONS IN THE SEVERE THUNDERSTORM WARNING INCLUDE BUT ARE NOT
LIMITED TO MOSCOW AND SEVEN OAKS..

[srainhoutx]

NWS thinking the MCS to our NW may create some problems later this evening for our Northern Areas...

MEANWHILE...MCS AND ASSOCIATED SFC OUTFLOW BOUNDARY ARE PUSHING
SOUTHEAST AT 40 MPH THROUGH NORTH CENTRAL TX. AN IMPRESSIVE COLD
POOL HAS DEVELOPED WITH THE MCS WHICH SHOULD KEEP THE STORMS OR
THE REMNANT OUTFLOW GOING UNTIL IT REACHES OUR NRN ZONES. BASED ON
CURRENT MOTION THIS FEATURE WOULD REACH OUR NRN ZONES 23-00Z. LAPS
ANALYSIS SHOWS THAT THE AIRMASS IS QUITE UNSTABLE OVER SE TX WITH
CAPES OF 3000-4000 J/KG AND VIRTUALLY NO CAP. THINK TSRA WILL
CONTINUE TO DEVELOP ALONG RESIDUAL OUTFLOW BOUNDARIES THIS EVENING
WITH ACTIVITY BEING ENHANCED OVER OUR NRN ZONES AS THE MCS OR ITS
OUTFLOW ARRIVE FROM THE NORTH. HAVE PLACED 30-40 POPS NORTH/CENTRAL...
20 POPS COAST THIS EVENING. ISOLATED SEVERE STORMS WILL BE
POSSIBLE AS REFLECTED IN THE HWO.

[wxdata]

Outflow boundary in northern Harris...

[sleetstorm]

Outflow boundary in northern Harris...

What are those white dots on that radar, wxdata? And what do those different hued and size lightning bolts connote?

[wxdata]

Outflow boundary in northern Harris...

What are those white dots on that radar, wxdata?

If you'll enlarge the image by clicking on it, you can see them better. They are the circles for sky conditions at surface reporting stations.

[wxdata]

There may be a weak seabreeze moving through northern Ft. Bend/Brazoria counties heading for southern Harris. We'll see soon if it has any affect on the outflow boundary..

[sleetstorm]

Outflow boundary in northern Harris...

What are those white dots on that radar, wxdata?

If you'll enlarge the image by clicking on it, you can see them better. They are the circles for sky conditions at surface reporting stations.

Okay, thank you. That is interesting.

[wxdata]

Nexrad estimates hail approaching 2" in central Liberty County? Warning soon?

[Andrew]

There may be a weak seabreeze moving through northern Ft. Bend/Brazoria counties heading for southern Harris. We'll see soon if it has any affect on the outflow boundary..

Yea you can see it on the GR Level 3 radar. It looks like the two should meet somewhere around southwest Houston.

[sleetstorm]

I saw it as well. If it holds together, and conditions in the atmosphere are or remain ripe, some people in some parts of Harris County could get more good soaking rain.

[rnmm]

Hello all! Can someone please tell me what my area MAY see from these storms? I understand no one can be 100%, but I was going to fire up the grill and wanted to see what you all thought before I did that. Can we expect some storms/rain or will they dissipate before they can make it to my area or are they going to miss us all together? Thank you...I appreciate it

[wxdata]

Better late than never..

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
440 PM CDT MON MAY 17 2010

TXZ200-214-172245-
CHAMBERS-LIBERTY-
440 PM CDT MON MAY 17 2010

...STRONG THUNDERSTORM OVER SOUTHERN LIBERTY COUNTY...

AT 436 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR LIBERTY...MOVING SOUTH AT 15 MPH.

ONE HALF INCH DIAMETER HAIL...WINDS GREATER THAN 40 MPH...FREQUENT
CLOUD TO GROUND LIGHTNING...BRIEF HEAVY DOWNPOURS...ARE POSSIBLE WITH
THIS STORM.

LOCATIONS IN THE PATH OF THIS STORM INCLUDE...WALLISVILLE...
HANKAMER...LIBERTY...KENEFICK...HARDIN...DEVERS AND COVE.