Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
354 PM EDT Thu Sep 21 2017
Valid 00Z Fri Sep 22 2017 - 00Z Sun Sep 24 2017
...Tropical Storm Jose will produce dangerous surf conditions and rip
currents along with rain across southeast Massachusetts...
...Heavy snow possible in the higher elevations of the Northern Rockies...
...Severe storms possible across the Upper Midwest and northern Plains...
A deepening trough will be over much of the western half of the CONUS with
a ridge over the East. This will cause an extensive frontal boundary to
span from southern Canada through the Upper Mississippi Valley,
Northern/Central Plains and into the Southern Rockies/Four
Corners/Southwest. Rain along with higher elevation snow can be expected.
Numerous locations across the Great Basin and Intermountain West have
freeze watches and warnings, as well as, winter weather advisories in
effect. Heavy snow will be possible over the next couple of days in the
higher elevations of the Northern Rockies and the Wasatchs.
Strong wind will accompany this front, especially across southern
California, Nevada, Utah and northern Arizona. Strong to severe
thunderstorms are expected to develop along and ahead of the front on
Friday for portions of the eastern Dakotas and western Minnesota - the
Storm Prediction Center has this area highlighted with a slight risk, with
a broader marginal area encompassing the Upper Mississippi Valley, the
Central Plains, Southern High Plains and portions along the Southern
Rockies. Additionally, periods of heavy rain will be possible along the
front, especially on Saturday.
Tropical Storm Jose will continue to weaken well off New England's coast--
although its affects will still be felt. Heavy rainfall from the western
edge of Jose will impact mainly southeast Massachusetts each day. In
addition, dangerous surf conditions and rip currents will continue to be a
hazard for the Northeast coast through tonight. For the most current
information on Jose, please see the National Hurricane Center
Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php