Valid Saturday April 04, 2020 to Friday April 10, 2020
US Hazards Outlook NWS Climate Prediction Center College Park MD 300 PM
EDT March 27 2020
Synopsis: A general consensus of models shows
mid-level high pressure over the North Pacific and Aleutians, and over the
northwestern CONUS. Mid-level low pressure is forecast off the West and East
Coasts of the Lower 48 states, with some energy beginning to move onshore in
the West. Increased storm activity is expected across much of the southern
CONUS during week-2.
Slight risk of heavy
precipitation for portions of the Southern Great Plains and Lower Mississippi
Valley, Sat-Fri, Apr 4-10.
Slight risk of much below normal temperatures for the Northern Great
Plains, Sat-Sun, Apr 4-5.
For Saturday April 04 - Friday
April 10: A broad mid-level trough is predicted to be off the Eastern
Seaboard at the start of week-2 and drift very slowly eastward (in the mean).
This trough is forecast to influence much of the northeastern quadrant of the
CONUS for most, if not all, of the period, with cooler temperatures and drier
conditions. However, for areas to the south, from the Southern Plains and Lower
Mississippi Valley across the remainder of the Gulf Coast region, warmer
temperatures and wetter conditions are favored. This is associated with
southern stream energy transiting this portion of the country. A slight risk of
heavy precipitation is posted for eastern Texas, Louisiana, and adjacent parts
of Arkansas and Oklahoma, Apr 4-10, where about 1.5-2.0 inches of rain is
expected to fall, in the form of occasional showers and thunderstorms.
Localized thunderstorm activity could result in higher precipitation totals.
Widespread cold surface high pressure forecast over Canada is expected to
result in the transport of anomalously cold air southward across the
north-central states during the first two days of the week-2 period. There is
at least a 20% chance that minimum surface temperatures during this time could
fall to the 15th percentile or lower. Portions of this region are expected to
see minimum temperatures fall below 20 degrees F. Any impacts are likely to be
mitigated across the northern Plains, as it is still prior to the growing
season in that area.
Forecaster: Anthony Artusa
Please consult local NWS Forecast Offices for short range forecasts and region-specific information.