The posts in this forum are NOT official forecast and should not be used as such. They are just the opinion of the poster and may or may not be backed by sound meteorological data. They are NOT endorsed by any professional institution or 
IT'S OFFICIAL!!!!!
WINTER STORM WARNING IN EFFECT FROM NOON SUNDAY TO 7 AM EST MONDAY UNTIL 4:58AM EST
Urgent - Winter Weather Message National Weather Service Baltimore MD/Washington DC 357 PM EST Sat Jan 24 2004
.A Low Pressure System Will Move Northeast From The Southern Plains Tonight Into The Ohio Valley On Sunday. Moisture Will Overspread The Region Sunday And Override The Artic Air Mass Causing To Snow To Breakout Sunday Afternoon And Continue Into Sunday Night. Snow Will Likely Mix With Sleet Before Ending Early Monday Morning As The Storm System Moves Away From The Region.
0958- Anne Arundel MD-Arlington/Falls Church/Alexandria VA- District Of Columbia DC-Fairfax VA-Fauquier VA-Howard MD-Loudoun VA- Montgomery MD-Prince Georges MD- Prince William/Manassas/Manassas Park VA-Rappahannock VA- Southern Baltimore MD-
...Winter Storm Warning In Effect From Noon Sunday To 7 AM EST Monday...
Snow Will Begin Early Sunday Afternoon Across The Region. Snow Could Be Heavy At Times Sunday Afternoon And Evening. Snow Will Become Mixed With Sleet At Times Sunday Evening. All Precipitation Will Gradually Taper Off By Daybreak Monday...Although Patches Of Light Freezing Drizzle Are Expected To Linger On Monday. Total Accumulation Of Snow And Sleet Is Expected To Range From 4 To 7 Inches Before The Storm System Moves Out Early Monday.
A Winter Storm Warning Is Issued When Severe Winter Weather Is Expected To Occur. Heavy Snow And/Or Ice Are Forecast To Accumulate In The Affected Areas Causing Hazardous Driving Conditions. Those With Travel Plans In The Warning Area Are Advised To Choose An Alternate Route, Or Should Use Extreme Caution If Travel Is Unavoidable.
The Greenland Block.........Just Gotta Love It!!!!!!!!!!!!!
-JEB!!!!!!!!!!!!!!!!!!!! Thank You, GREENLAND BLOCK!!!!!
As for here. Larry Cosgrove is saying: The ETA version should have the best handle on the disturbance forecast to eject from the upper Rio Grande Valley. Since the high-resolution scheme is built specifically for meteorological phenomena such as cold air damming and overrunning (high resolution to pinpoint thermal inequities in both the vertical and horizontal planes), I had no other alternative but to trust the scenario of the W TX impulse moving into confluence over the Ohio Valley on Sunday. This action should introduce high dewpoints and energy to a compacted baroclinic zone (cAk vs. mT). Since a second storm is fast approaching from the Intermountain Region, acceleration seems likely. A subtropical high across the Greater Antilles is acting as both a steering mechanism and provider of water content; if the anticyclone were not so strong, it would be easy to consider a further-south path for the vestigial low. I still believe the heaviest snows will fall from C IL....C IN....N, C OH....N WV....N MD....DE....PA....NJ....S NY, with a small stripe of 12"+ accumulations likely (note the very high Omega/UVV fields seen on GEM and ETA data). The recent trends toward a narrower, more southern placement of the precipitation are an indication that this forerunner system will experience shearing and compaction as it enters a confluent zone below Arctic high pressure in QC. Ice and glazing is also a consideration due to the warmer readings expected to reach the upper reaches of the boundary layer, with the primary sleet/freezing rain outlook stretching from N MO....C, S IL....C, S IN....C, S OH....WV....VA....DC....MD Eastern Shore, as well as pockets of frozen types across W, C NC....E TN....E KY. So strong is the heat ridge that the 50 deg F isotherm might reach a New Albany IN....Cynthiana KY....Jellico TN....Dalton GA....Rock Hill SC....Washington NC....Norfolk VA arc at some point during Sunday and Monday.
