Hey I'm not making this up, this is from the NWS TBW Discussion
NOW...SNOW FLURRIES. BELIEVE IT OR NOT...SUCCESSIVE RUNS OF THE
GFS ARE QUITE VIGOROUS WITH SUNDAY NIGHT`S REINFORCING SHORT WAVE.
GFS POINT SOUNDINGS AND CROSS SECTIONS SHOW NEAR SATURATION
BETWEEN 900 AND 700 MB ALONG WITH A RIBBON OF VERTICAL MOTION.
MOST INTERESTING IS THE DEPTH OF THE NEAR-SATURATED CONDITIONS IN
SUBFREEZING TEMPERATURES...WHICH INCLUDES *ALL* OF IT. AT THE SAME
TIME...SURFACE WIND CONVERGENCE COULD DEVELOP BEFORE DAYBREAK MONDAY IF
YOU BELIEVE THE MODEL TRENDS (THE 18Z NAM IS SIMILAR) OVER AT
LEAST THE CENTRAL ZONES. WITH SURFACE TEMPERATURES IN THE LOWER TO
MID 30S...BUT MORE IMPORTANTLY DEWPOINTS BETWEEN 25 AND 30 (RATHER
THAN UNDER 20 WHICH WOULD EVAPORATE ANY PRECIPITATION)...IT IS NOT OUT OF THE
QUESTION THAT SOME FLAKES MAY FALL. STAY TUNED.
Snow Flurries in Tampa on Monday?????
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- Extremeweatherguy
- Category 5
- Posts: 11095
- Joined: Mon Oct 10, 2005 8:13 pm
- Location: Florida
Looks like there is a little less of a chance in the Tampa area, tho better up north prob. Ocala/Cirtus county.
SPEAKING OF AN APPROACHING SHORT WAVE...MODELS PROG THIS WAVE TO
PASS ACROSS THE AREA BETWEEN 12 AND 18Z MONDAY. AT FIRST GLANCE...IT
LOOKS INTERESTING TO SEE SUCH A COLD AIRMASS IN PLACE IN COMBINATION
WITH A SHORT WAVE AND A BRIEF SURGE OF LOW LVL MOISTURE OFF THE
GULF. CROSS SECTIONS AND FORECAST SOUNDINGS SUGGEST THAT IF THE
MOISTURE WAS DEEP ENOUGH AND WITH SUFFICIENT LIFT...PERHAPS THE
NORTH HALF OF OUR CWA MAY EVEN SEE A FEW SNOW FLAKES MONDAY MORNING
(FREEZING LEVEL TOO HIGH SOUTHERN HALF TO SUPPORT FROZEN PCPN).
GIVEN THAT CONDITIONS NEED TO BE NEARLY PERFECT FOR SUCH AN EVENT TO
OCCUR HERE...CLIMO STILL GETS ALOT OF WEIGHT IN THIS FORECAST...AND
AS SUCH I WOULDN`T GET TOO EXCITED ABOUT SEEING WHITE STUFF JUST
YET. INSTEAD...WE WILL CLOSELY WATCH HOW THE SECONDARY SHORT WAVE
EVOLVES TODAY AND SUNDAY. AS MENTIONED ABOVE...IF CLOUDS THICKEN UP
AND WINDS INCREASE SOONER THAN EXPECTED...LOW LEVEL TEMPS MAY END UP
BEING TOO WARM FOR FROZEN PCPN.
SPEAKING OF AN APPROACHING SHORT WAVE...MODELS PROG THIS WAVE TO
PASS ACROSS THE AREA BETWEEN 12 AND 18Z MONDAY. AT FIRST GLANCE...IT
LOOKS INTERESTING TO SEE SUCH A COLD AIRMASS IN PLACE IN COMBINATION
WITH A SHORT WAVE AND A BRIEF SURGE OF LOW LVL MOISTURE OFF THE
GULF. CROSS SECTIONS AND FORECAST SOUNDINGS SUGGEST THAT IF THE
MOISTURE WAS DEEP ENOUGH AND WITH SUFFICIENT LIFT...PERHAPS THE
NORTH HALF OF OUR CWA MAY EVEN SEE A FEW SNOW FLAKES MONDAY MORNING
(FREEZING LEVEL TOO HIGH SOUTHERN HALF TO SUPPORT FROZEN PCPN).
GIVEN THAT CONDITIONS NEED TO BE NEARLY PERFECT FOR SUCH AN EVENT TO
OCCUR HERE...CLIMO STILL GETS ALOT OF WEIGHT IN THIS FORECAST...AND
AS SUCH I WOULDN`T GET TOO EXCITED ABOUT SEEING WHITE STUFF JUST
YET. INSTEAD...WE WILL CLOSELY WATCH HOW THE SECONDARY SHORT WAVE
EVOLVES TODAY AND SUNDAY. AS MENTIONED ABOVE...IF CLOUDS THICKEN UP
AND WINDS INCREASE SOONER THAN EXPECTED...LOW LEVEL TEMPS MAY END UP
BEING TOO WARM FOR FROZEN PCPN.
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