US Day 3-7 Hazards Outlook NWS Weather Prediction Center College Park MD 325 PM EST Tue Feb 08 2022 Valid Friday February 11 2022 - Tuesday February 15 2022 Hazards: - Heavy precipitation across portions of the Alaska Panhandle, Fri-Sat, Feb 11-Feb 12. - Much below normal temperatures across portions of mainland Alaska, Fri-Mon, Feb 11-Feb 14. Detailed Summary: Relatively tranquil conditions with little in the way of hazardous weather can be expected through the medium-range period (Friday, February 11th-Tuesday, February 15th). While the basic upper-air pattern across North America remains similar to that in recent weeks, the broad northern stream trough is forecast to retreat farther north leading to less chance of it interacting with the southern stream flow coming up from the Gulf of Mexico toward the southeastern U.S. Only a couple of areas will be marginally close to hazardous weather consideration. A clipper low pressure system is forecast to deliver a period of snow from northern Minnesota to the Great Lakes Friday into Saturday. The highest chance for the snow to accumulate a few inches will be near the Canadian border of northern Minnesota. Behind this clipper, a shot of arctic air is forecast to drop temperatures to 15-20 degrees below normal across lower Michigan and into the northern portion of the Ohio Valley on Sunday. A dome of high pressure stationed over the West Coast will contribute to anomalously warm temperatures. Parts of Southern California are under an excessive heat watch with high temperatures expected to be in the upper 80s to mid 90s. Parts of northern California may experience high temperatures between 20-25 degrees above average during this period. For Alaska, the frequent influx of Pacific moisture toward southeastern Alaska through the Panhandle in the short-range period is forecast to relax on Thursday before picking back up by the time the medium-range period begins on Friday. By later on Friday into Saturday, the next moisture plume associated with a triple-point low is forecast to bring heavy precipitation mainly across the northern portion of the Panhandle. A consistent period of below average temperatures in the short range is expected to continue into the medium range for parts of the western/northern mainland coast as well as the Brooks Range due to a persistent area of high pressure. By early next week, models have been indicating a bigger storm system to move across the Aleutians. It appears that this system will not be strong enough to generate winds of 50 knots or higher over a significant area. Therefore, no areas of high winds have been indicated for the Aleutians at this time. Kebede/Kong