Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
307 AM EST Fri Feb 27 2015
Valid 12Z Fri Feb 27 2015 - 12Z Sun Mar 01 2015
...Heavy snow for parts of the Central/Southern Rockies...
...Temperatures will be 20 to near 40 degrees below average over the
Central and Southern Plains...
Temperatures will be 15 to 30 degrees below average from the Middle
Mississippi Valley to the Ohio Valley and the Northern Mid-Atlantic...
Cold high pressure over the Middle Mississippi Valley will move eastward
to the Mid-Atlantic by Saturday evening. Temperatures east of the Rockies
will be below average for the next few days. In addition, a closed
upper-level low over the Pacific Northwest will move southward to the
Great Basin by Saturday. The energy will trigger coastal rain and higher
elevation snow over parts of the Pacific Northwest that will slowly move
southward into Southern California and the Great Basin by Saturday.
Meanwhile, circulation around the area of high pressure will aid in
producing upslope flow which will aid in producing snow over parts of the
Central/Southern Rockies and High Plains on Friday morning. As the high
moves eastward return flow around the high will pull moisture off the Gulf
of Mexico. As the moisture moves farther inland, the snow over the
Central/Southern High Plains will expand eastward over parts of the
Central Plains/Middle Mississippi Valley on Saturday. Rain will also
develop over parts of the Lower Rio Grande Valley/Southern Plains on
Friday afternoon into Saturday. In between the areas of rain and snow, a
region of rain/freezing rain will develop over parts of the Southern
Plains late Friday night into Saturday. Elsewhere, there will be areas of
rain over parts of southern Florida through Saturday.
Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php