Heavy rain, mountain snow and strong winds in the western U.S. this week
The western U.S. will experience active weather yet again this week as significant Pacific moisture brings rain and mountain snow to the region. This heavy rain will bring flood concerns to parts of WA, OR and CA. Very heavy snow is possible in the Sierra, Cascades, Great Basin and parts of the northern Rockies.
Hazardous Weather Conditions
High and low forecast temperature values represent air temperature.
Water temperature forecast is experimental.
Last Update: 8:18 am EST Jan 18, 2017
Forecast Valid: 9am EST Jan 18, 2017-6pm EST Jan 24, 2017
LAKES WILL CONTINUE TO NORTHERN NEW ENGLAND TODAY AND WEAKEN AS IT
PROGRESSES. MEANWHILE...HIGH PRESSURE OF 30.2 INCHES OVER THE MID
MISSISSIPPI VALLEY WILL SHIFT TO THE OHIO VALLEY TONIGHT AND TO
THE MID ATLANTIC COAST THURSDAY. LOW PRESSURE OF AROUND 29.7
INCHES WILL GRADUALLY ORGANIZE ACROSS THE MID MISSISSIPPI VALLEY
THURSDAY NIGHT...AND MOVE NORTHWARD TO LAKE MICHIGAN BY FRIDAY
WHILE WEAKENING. ANOTHER LOW PRESSURE OF AROUND 29.4 INCHES IS
FORECAST TO DEVELOP ACROSS THE CENTRAL PLAINS FRIDAY AND TRACK TO
THE UPPER MIDWEST SATURDAY NIGHT...WHILE ANOTHER LOW OF 29.4
INCHES DEVELOPS AND MOVES EAST THROUGH THE SOUTHERN GULF STATES ON
- This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
- The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.