GREAT discussion. Thank you #43! Love the beginning....
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
355 AM CST MON FEB 22 2010
...SIGNIFICANT WINTER WEATHER TO AFFECT THE NORTHERN THIRD OF
SOUTHEAST TEXAS ON TUESDAY AND TUESDAY EVENING...
.DISCUSSION...
DID YOU ENJOY THE 70S TODAY? ENJOY THE CALM BEFORE STORM. A COLD
FRONT HAS CROSSED THE COAST AND HAS CLEARED OUT THE STUBBORN SEA
FOG PLAGUING THE COAST. COLD AIR ADVECTION WILL PERSIST TODAY
THROUGH TUESDAY. WRAP AROUND CLOUDS WILL PERSIST THIS MORNING
BEFORE DISSIPATING AROUND MID DAY LEAVING SKIES PARTLY CLOUDY.
CLOUDS WILL BE ON THE INCREASE LATE TONIGHT AHEAD OF A POTENT
SHORT WAVE THAT WILL APPROACH SOUTHEAST TEXAS ON TUESDAY.
ON TUESDAY AND TUESDAY NIGHT...AS THE S/WV APPROACHES...IT WILL
TAP INTO THE MOISTURE REMAINING OVER THE REGION. COLD AIR
ADVECTION WILL CONTINUE IN THE WAKE OF THIS MORNINGS FRONT. AS
PRECIPITATION BEGINS TO FALL...EVAPORATIVE COOLING OF THE COLUMN
WILL ENSUE. FORECAST SOUNDINGS SHOW A BIT OF DRY AIR AROUND 900 MB
SO ONCE PRECIP BEGINS TO FALL...SO WILL THE TEMPERATURES. ALL MODELS
ARE IN AGREEMENT THAT TEMPERATURES WILL FALL BELOW 0 C NORTH OF A
CALDWELL TO TRINITY LINE BY AFTERNOON. RAIN WILL START IN THE
MORNING BUT QUICKLY CHANGE OVER TO SNOW. A WINTER STORM WATCH HAS
BEEN ISSUED FOR AREAS NORTH OF A BRENHAM TO LIVINGSTON LINE FOR TUESDAY.
HAVE BUMPED POPS UPWARD AREA WIDE FOR TUESDAY AFTERNOON. LOCAL
POLICIES DICTATE THAT A WINTER STORM WATCH IS ISSUED WHEN 2 OR
MORE INCHES OF SNOW IS FORECAST.
AT THIS TIME IT APPEARS THAT 2 TO
4 INCHES OF SNOW WILL FALL NORTH OF A BRENHAM TO LIVINGSTON LINE.
THERE ARE MANY UNCERTAINTIES WITH THIS SYSTEM.
AM RATHER CONCERNED
THAT CONVECTIVE BANDING COULD SET UP FROM BRYAN TO CROCKETT...
SIMILAR TO WHAT HAPPENED IN DFW A FEW WEEKS AGO. 
THIS WOULD BUMP
SNOW TOTALS UP SIGNIFICANTLY OVER THE EXTREME NORTH. WHERE DOES
THE RAIN SNOW LINE SET UP?
AM CONCERNED THAT MONTGOMERY AND
NORTHWESTERN HARRIS COUNTIES MAY GET ACCUMULATING SNOW LATE
TUESDAY AFTERNOON WHICH IS SOONER THAN MODELS SUGGEST. MODELS
INDICATE THAT TEMPERATURES WILL BE COLD ENOUGH TUESDAY EVENING FOR
THE
RAIN TO CHANGE TO SNOW IN HOUSTON AND THERE IS SOME POTENTIAL
FOR MINOR ACCUMULATIONS ON GRASSY SURFACES AS FAR SOUTH AS THE
I-10 CORRIDOR. COULD EVEN GET A RAIN SNOW MIX ALL THE WAY TO THE
COAST. UPPER FLOW QUICKLY BECOMES CONFLUENT BY 09Z WEDNESDAY AND
THE PRECIP SHOULD SHUT DOWN RATHER QUICKLY.
.HGX WATCHES/WARNINGS/ADVISORIES...
TX...WINTER STORM WATCH FROM TUESDAY MORNING THROUGH TUESDAY EVENING
FOR THE FOLLOWING ZONES: BRAZOS...BURLESON...GRIMES...
HOUSTON...MADISON...MONTGOMERY...POLK...SAN JACINTO...
TRINITY...WALKER...WASHINGTON.
Second winter storm watch of the year for the HGX CWA!
