Discussion in the Austin/San Antonio office of a possible squall line Sunday night into Monday, then fire threat from plummeting humidities and dry vegetation behind front Monday (since it has been so DRY). Hopefully we will get decent rain to mitigate the fire threat, but hail I could do without, at least hail larger than quarters.

But, I guess beggars can't be chooser.
PREV DISCUSSION... /ISSUED 340 AM CST TUE NOV 6 2012/
DISCUSSION...
MOSTLY CLEAR ACROSS SOUTH CENTRAL TEXAS THIS MORNING. THE MAIN
FORECAST ISSUES ARE MOIST GULF RETURN FLOW LATE IN THE WEEK...POPS
AND
THREAT OF SEVERE STORMS WITH A TROUGH AND COLD FRONT SUNDAY
EVENING INTO EARLY MONDAY...AND THE POSSIBILITY OF
FIRE WEATHER
CONCERNS ON MONDAY. THE 00Z MODELS ARE IN FAIR TO GOOD AGREEMENT...
EVEN THROUGH DAY 7. OVERALL...THE FORECAST IS BASED ON A
BLEND...THE GFS AND ECMWF CAPTURE 90 PERCENT OF THE EXPECTATIONS.
HIGH PRESSURE WILL MAINTAIN MOSTLY CLEAR SKIES WITH COOL NIGHTS
AND MILD AFTERNOONS TODAY AND WEDNESDAY. AS THE HIGH PRESSURE AXIS
SHIFTS EAST...MOIST GULF FLOW SHOULD RETURN WEDNESDAY NIGHT...SO
WE HAVE ADDED PATCHY FOG TO THE FORECAST FOR THURSDAY MORNING.
PATCHY FOG IS POSSIBLE AGAIN FRIDAY...BUT WILL LEAVE OUT OF THE
FORECAST FOR NOW AS IT COULD END UP AS A STRATUS DECK. DEEPENING
RETURN FLOW AND A RIPPLE IN THE APPROACHING JET STREAM MAY BE
ENOUGH TO PRODUCE SCATTERED AFTERNOON CONVECTION ON SATURDAY.
HOWEVER...
THE BIG EVENT IS A LARGE TROUGH AND ASSOCIATED COLD
FRONT SWEEPING ACROSS TEXAS SUNDAY EVENING INTO MONDAY MORNING.
INSTABILITY AND LIFT SHOULD BE SUFFICIENT FOR SOME SEVERE
STORMS... LIKELY WITH A SQUALL LINE ALONG THE COLD FRONT. RAIN SHOULD
END AND SKIES CLEAR MONDAY MORNING AS THE TROUGH AXIS SHIFTS EAST.
THIS LEADS TO THE LAST CONCERN FOR FIRE WEATHER AS
GUSTY NORTHWEST
WINDS AND RAPIDLY FALLING HUMIDITY COULD PRODUCE VERY FAVORABLE
CONDITIONS FOR THE SPREAD OF WILDFIRE MONDAY AFTERNOON. WILL
MENTION THIS IN PASSING FOR NOW AND SEE HOW MUCH RAIN IS EXPECTED
WITH LATER MODEL RUNS AND HOW TIMING OF THE DRIER AIR DEVELOPS BEHIND
THE TROUGH AXIS.
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