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National Weather Service
Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
347 AM EDT Thu Mar 26 2026
Valid 12Z Sun Mar 29 2026 - 12Z Thu Apr 02 2026
...Overview...
Multiple rounds of shortwave impulses will propagate through the Northeast while rotating around the southern periphery of a deep mid-level low centered over eastern Canada next week. Elsewhere, a relatively stagnant zonal flow pattern across the northern tier the country will give way to a more amplified one by mid-week, when the mean trough stationed over the Gulf of Alaska will dislodge and dig into the West Coast of the CONUS. The southern tier ridge will slide into the East by mid-to-late next week.
...Guidance/Predictability Assessment...
Models are in reasonably good agreement regarding the overall synoptic evolution of the mid-level pattern during the medium range period. Some uncertainties arise with respect to the timing and intensity of the waves moving through the Northeast as well as the incoming Pacific trough mid-week.
A general model blend consisting of all of the available deterministic and Ai guidance were used on days 3, 4 and 5 due to minor differences in their respective 500 mb patterns. Ensemble means were introduced into the blend on day 5 and became a majority of the blend beginning on day 6.
...Weather/Hazards Highlights...
Weaker ridging over the West than last week will still generate well above average temperatures through early next week.Temperatures across the High Plains and Rockies foothills will be between 30-40 degrees above average. Sunday and Monday will be the final two days of scattered to widespread tied or broken record warm temperatures. A cold front will sweep south through the Plains by mid-week, effectively moderating temperatures across the northern tier.
A deep Pacific system will enter the West next week, by digging down the coastline before ejecting out over the rest of the country. A surface low pressure system tracking across the central U.S. will become the focus for scattered to isolated thunderstorms. Guidance has begun to consolidate around a heavy rain threat over parts of the Midwest and Great Lakes beginning next Tuesday. Two separate yet recent rounds of heavy rainfall over the Ohio Valley will have made those soils especially vulnerable to flash flooding by any more heavy rain that occurs next week.
An active northern stream featuring a series of low pressure systems will produce several rounds of light rain/snow across portions of the interior Northeast and New England next week.
Kebede