A major pattern change is underway which will promote multiple low pressure systems tracking across the Great Plains and Midwest during early to mid-March. The Weather Prediction Center (valid March 5-9) depicts a swath of heavy precipitation (1 to 3 inches, locally more) from eastern Texas and southeastern Oklahoma northeast through the Lower to Middle Mississippi and Ohio Valleys. This heavier precipitation is forecast to extend into parts of the Northeast, but little to no precipitation is expected from Virginia south to Florida. Much-needed snowfall is expected across the Northern to Central Rockies, while dry weather prevails across California and the Southwest. Much above-normal temperatures are forecast across the southeastern and central U.S. where daily record highs may be broken from March 5 to 9.
The NWS 6-10 day outlook (valid March 10-14) calls for an increased chance of above-normal temperatures for the East, Middle to Lower Mississippi Valley, Southern Great Plains, Southwest, and California. Below-normal temperatures are more likely from the Pacific Northwest east to the Northern Great Plains. Below-normal temperatures are strongly favored for Alaska. The 6-10 day outlook favors above-normal precipitation from the Mississippi Valley to the East Coast. Above-normal precipitation probabilities decrease west across the Great Plains. Above-normal precipitation is also favored for the Pacific Northwest and Northern Rockies. Near to below-normal precipitation is favored across Alaska, while large above-normal precipitation probabilities are forecast throughout Hawaii.
