Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
321 PM EST Tue Nov 19 2019
Valid 00Z Wed Nov 20 2019 - 00Z Fri Nov 22 2019
...Heavy mountain snow over the Central/Southern Rockies as well as the
Great Basin/Southwest and moderate snow over the Northern Tier States
along the border with Canada...
...There is a moderate risk of excessive rainfall over parts of the
...There is a critical risk of wildfire spreading over parts of
A deep upper-level low over the west will aid in producing heavy mountain
snow and heavy lower elevation rain over parts of the Southwest and into
parts of the Central/Southern Rockies through Thursday evening. The heavy
rain over the Southwest will produce numerous flash flooding of many
streams and potentially affecting larger rives through Thursday morning.
Low pressure over the Central High Plains will move northeastward to the
Great Lakes by Thursday evening. The system will produce rain and snow
over parts of the Central/Northern Plains into the Upper Mississippi
Valley/Upper Great Lakes overnight Wednesday into Thursday evening.
Elsewhere, light snow showers will develop over parts of the higher
elevations of the Northeast. In addition, with a surface high will slide
southward across the Northern Rockies, setting up a favorable pressure
gradient for strong northerly wind across portions of Northern and Central
California. The wind will blow at 15-35 mph with higher gusts in
terrain-favored areas, will become common especially across the Central
Valley of California and other terrain-favored areas of the region. RH
values will fall to around 15% during peak heating periods - locally
lower. With dry fuels in place across the region, elevated and critical
wildfire risk have been issued over the region.
Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php