US Day 3-7 Hazards Outlook
NWS Weather Prediction Center College Park MD
408 PM EDT Wed Jun 03 2020
 
Valid Saturday June 06 2020 - Wednesday June 10 2020
 
Hazards:
- Heavy rain across portions of the Central Rockies, the Central Great Basin, the Northern Rockies, 
and the Northern Great Basin, Sat-Mon, Jun 6-Jun 8.
- Heavy rain across portions of the Northern/Central Plains, the Mississippi/Tennessee Valleys, and 
the Southeast, Mon-Tue, Jun 8-Jun 9.
- Heavy rain across portions of the Southeast and the Lower Mississippi Valley, Sat-Tue, Jun 6-Jun 
9.
- Heavy rain across portions of the Mississippi/Tennessee/Ohio Valleys, the Middle Mississippi 
Valley, and the Great Lakes, Wed, Jun 10.
- Severe weather across portions of the Northern Plains, Sat, Jun 6.
- Severe weather across portions of the Upper Mississippi Valley and the Northern Plains, Sun, Jun 
7.
- Flooding occurring or imminent across portions of the Lower Mississippi Valley, the Northern 
Plains, the Northern Rockies, the Middle Mississippi Valley, the Mid-Atlantic, the Southeast, the 
Great Lakes, and the Ohio Valley.
- Flooding likely across portions of the Middle Mississippi Valley.
- Much above normal temperatures across portions of the Central Rockies, the Central Plains, and 
the Southern Plains, Sat-Mon, Jun 6-Jun 8.
- Much below normal temperatures across portions of the Northern/Central Great Basin, the Northern 
Rockies, California, and the Pacific Northwest, Sat-Sun, Jun 6-Jun 7.
- Much below normal temperatures across portions of the Northern/Central Great Basin, the Northern 
Plains, and the Northern/Central Rockies, Mon, Jun 8.
 
Detailed Summary:

The medium-range period (Sat Jun 6 - Wed Jun 10) will begin with much above normal temperatures 
over the central and southern High Plains under an upper ridge of high pressure. High temperatures 
over this area are forecast to reach the century mark over the next couple of days. By the weekend, 
the much above normal temperatures should be confined to the central and southern High Plains as a 
large cool air mass works its way through the northwestern U.S., behind a cold front. Much below 
normal temperatures are expected for this region as that area could see temperatures drop to well 
over 20 degrees below normal. Heavy rain will tend to be focused over the northern Rockies and 
northern/central Great Basin. As the aforementioned cold front emerges from the Northern Rockies 
it'll raise the threat for severe weather over the Northern Plains and Upper Midwest on Saturday 
and Sunday. By Sunday, a cold front is expected to bring down cooler and drier air from eastern 
Canada, ending the heat along much of the East Coast for early next week.

Perhaps the area that warrants growing concerns during the medium-range period is in the Gulf of 
Mexico, where the National Hurricane Center has been monitoring Tropical Storm Cristobal. Models 
project that Cristobal will continue to track northward into the central part of the Gulf of Mexico 
in the short range. Although the exact track of this system is uncertain at this point, its 
relative large size means that many areas along the Gulf Coast will see an increasing threat of 
heavy rain this weekend. This includes areas from far eastern Texas through the central Gulf states 
to most of Florida including portions of the Southeast. The heavy rain may extend farther inland, 
across much of the the lower and middle Mississippi Valley depending on the track and forward 
motion of the tropical system. Current model guidance appears to spread heavy rain into the Midwest 
and Great Lakes region through the end of the medium range period.

Over Alaska, relatively quiet weather is in store through the medium-range period. Much warmer than 
normal temperatures across the northwestern part of the state will gradually moderate. However, ice 
jam flooding remains a concern over the North Slope as rivers have not yet broken up, while minor 
snowmelt flooding is a possibility in central and southern parts of the mainland. Farther south, 
some terrain-influenced/enhanced precipitation is expected to linger across southern Alaska, where 
wet snow is possible for the higher elevations. Precipitation amounts are not expected to be heavy. 
Fire potential will remain low to moderate in southern Alaska due to the rain, but increased 
thunderstorm potential, particularly north of the Alaska Range, along heat troughs running through 
mainland Alaska compounded by favorable fuels could produce a number of starts.

Kebede/Kong