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Houston Area (+ AUS, SAT and MMMY) Snow Miracle Thread


Ed Lizard

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:o ...especially considering it's Feb. 2!!!

This morning, the low temp hit 1F (34 degrees below normal)...this absolutely destorys the previous Feb. 3 record low of 16F, set in 1982. Just incredible...

AREA FORECAST DISCUSSION

NATIONAL WEATHER SERVICE EL PASO TX/SANTA TERESA NM

250 AM MST THU FEB 3 2011

.SYNOPSIS...

RECORD BREAKING COLD TEMPERATURES WILL CONTINUE TODAY AND TONIGHT

ACROSS THE REGION. EL PASO SET NEW RECORD LOWS BOTH YESTERDAY AND

THIS MORNING. YESTERDAY`S HIGH TEMPERATURE IN EL PASO WAS THE

COLDEST HIGH FOR ANY DAY EVER IN OVER 120 YEARS OF RECORD KEEPING.

THE HIGH WAS ONLY 17 DEGREES. THE REGION WILL STAY WELL BELOW

FREEZING AGAIN TODAY AND ALMOST 40 DEGREES BELOW NORMAL. HOWEVER

THE THREAT FOR MORE SNOW IS OVER AND SKIES WILL BEGIN TO CLEAR

ACROSS THE REGION AS THE UPPER STORM DEPARTS. TONIGHT WILL BE

DANGEROUSLY COLD AGAIN.

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From Jeff:

Additional email from Jeff 2pm

Getting numerous reports of sleet now over SE Harris County and light snow in Pasadena and this is shifting slowly NW. Should be crossing over the freezing line shortly. One report of accumulation on rooftops in the Clear Lake area.

Really watching the enhancement on radar over Wharton and Fort Bend Counties as this is heading for central Harris and may produce onset of sleet/snow over more of Harris and Fort Bend counties prior to 400pm…I have had no reports from this area yet, so best bet is most of this is not reaching the ground, but dbz is increasing in this area to near 15 with threshold being 20dbz in the sleet areas.<BR clear=all>

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From Nesdis...

SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 02/03/11 1943Z

SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-763-8678

LATEST DATA USED: GOES-13: 1932Z VOGT

.

LOCATION...ALABAMA...MISSISSIPPI...LOUISIANA...TEXAS...

.

ATTN WFOS...TAE...BMX...HUN...MOB...MEG...JAN...LIX...LCH...SHV...

ATTN WFOS...HGX...CRP...EWX...

ATTN RFCS...SERFC...LMRFC...WGRFC...

.

EVENT...WINTRY MIX OF PRECIP STARTING TO IMPACT THE GULF STATES

.

SATELLITE ANALYSIS AND TRENDS...LATEST WV IMAGERY SHOWS MAIN

UL VORT/IMPULSE LOCATED NEAR 26N/107W WITH AN ELONGATED TROF AXIS

STRETCHING FROM SW TX UP THROUGH KS AND EAST THROUGH PA/NJ. THERE ARE

SEVERAL SUBTLE S/WV IMPULSES WORKING THEIR WAY ALONG THE UL JET WHICH

RESIDES JUST TO THE SOUTH OF THE TROF AXIS... ATTM THERE IS A 140 KT

JET MAX RUNNING FROM AR NE TOWARDS NJ. BLENDED TPW INDICATES THAT THE

DEEPEST MOISTURE REMAINS JUST OFFSHORE IN THE GULF OF MEXICO BUT IS

TRENDING NORTH WITH GOOD MID-TO-UL WINDS DIRECTED TO THE NORTH. PWATS

OVER LAND DIFFER FROM 0.9" JUST ALONG THE GULF COASTLINE NORTH TO 0.5"

ALONG THE NORTHERN FRINGE OF LA/MS/AL/GA.

.

19Z SFC ANALYSIS SHOWS THAT THE WINTRY PRECIP IS BEGINNING TO OVERCOME

THE FAIRLY DRY AIR AT THE SFC WITH REPORTS OF LIGHT FREEZING DRIZZLE

OVER SE LA/S AND C MS WITH RAIN FURTHER TO THE EAST IN GA. BECAUSE SFC

TEMPS ARE HOVERING AROUND 0C, EXPECT FREEZING RAIN/SLEET TO INCREASE

FROM SE TO NW AS THE MAIN UL VORT SWINGS AROUND THE BASE OF THE TROF AND

AS BETTER MOISTURE WORKS ITS WAY NORTH. SNOW WILL LIKELY BE INCREASING

MOSTLY OVER SE COASTLINE OF TX AS WELL. THE 850 0C LINE CURRENTLY RUNS

MOSTLY SW-TO=NE ACROSS C LA/C MS/NW AL.

.

AN ANNOTATED SATELLITE GRAPHIC SHOWING THE HEAVY PRECIPITATION THREAT AREA

SHOULD BE AVAILABLE ON THE INTERNET ADDRESS LISTED BELOW IN APPROXIMATELY

10-15 MINUTES.

.

SHORT TERM OUTLOOK VALID 2000-2300Z...MEDIUM CONFIDENCE FACTOR IN SHORT

TERM OUTLOOK...EXPECT LIGHT FREEZING RAIN/DRIZZLE TO START INCREASING

FROM SE TO NW THIS AFTERNOON AS MAIN UL VORT ROUNDS THE BASE OF THE TROF

AND HELPS INCREASE UVV'S/MOISTURE INCREASES... ALSO SHOULD EXPECT MAINLY

LIGHT SNOW OVER THE SE COASTLINE OF TX FOR AT LEAST THE NEXT 2-3 HRS.

post-32-0-86390900-1296766864.gif

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A post on S2K by a red tagger saying dry air moving in means a bust has some local posters depressed. Now, the NAM, GFS and Euro has had me semi-unoptimistic for over a day now, but this close, too late to pack it in now.

And the RUC 700 mb RH forecast isn't looking too bad...

http://www.nco.ncep.noaa.gov/pmb/nwprod/analysis/namer/ruc/hr3/index_700_m_loop.shtml

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A post on S2K by a red tagger saying dry air moving in means a bust has some local posters depressed. Now, the NAM, GFS and Euro has had me semi-unoptimistic for over a day now, but this close, too late to pack it in now.

And the RUC 700 mb RH forecast isn't looking too bad...

http://www.nco.ncep....00_m_loop.shtml

Which 'red tagger?'

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Precip being so far east was a sign... Too much dry air to overcome. And with the ULL, while there is a period where forcing gets better, the best snow with ULLs is typically under them or jus north of the track. We won't be in that favorable region. It's not a bust yet... Any precip can cause big travel issues, but too much going against great accumulations it seems.

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E-mail from Jeff:

8pm Numerous reports now of freezing rain and sleet to our SW, numerous highway being closed from icing across S TX.

Radar is really starting to light up and clearly moisture advection off the Gulf if in progress. Freezing rain now noted as far NE as Port Aransas.

Expect things to rapidly begin to develop as strong lift is approaching the area from the W and SW.<BR clear=all>

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Corpus -

915 PM...Freezing drizzle has now been reported in every county across the Coastal Bend, and just reached Victoria and Port Lavaca in the past hour. Road surfaces are slick and hazardous over most of the region. Light snow is falling in Laredo. We expect the freezing drizzle to continue through midnight with a gradual transition to sleet and snow after midnight. Still looks like total sleet and snow accumulations of 1-2" west of highway 77. Up to 1/2" of snow is possible in Laredo. Ice accumulations of around 1/8" are likely before the transition to sleet and snow. Numerous vehicle accidents are being reported along the coastal bend. All major highway systems in Corpus Christi have been shut down. Travel is highly discouraged.

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