US Day 3-7 Hazards Outlook
NWS Weather Prediction Center College Park MD
344 PM EDT Fri Jun 07 2019
 
Valid Monday June 10 2019 - Friday June 14 2019
 
Hazards:
- Heavy rain across portions of the Northeast, the Central/Southern Appalachians, the Mid-Atlantic, 
the Great Lakes, and the Ohio Valley, Mon, Jun 10.
- Heavy rain across portions of the Southeast, the Southern/Central Appalachians, and the 
Mid-Atlantic, Tue-Wed, Jun 11-Jun 12.
- Flooding possible across portions of the Mid-Atlantic and the Southern Appalachians.
- Flooding occurring or imminent across portions of the Plains, the Mississippi Valley, the Great 
Lakes, the Northern Rockies, the Northern Great Basin, and the Ohio Valley.
- Flooding likely across portions of the Central Plains and the Central Great Basin.
- Excessive heat across portions of the Southern Plains, Mon, Jun 10.
- Much above normal temperatures across portions of the Central/Northern Great Basin, the Northern 
Rockies, California, and the Pacific Northwest, Mon-Thu, Jun 10-Jun 13.
- Heavy precipitation across portions of the Alaska Panhandle and mainland Alaska, Tue-Wed, Jun 
11-Jun 12.
- Heavy rain across portions of the Alaska Panhandle, Mon-Wed, Jun 10-Jun 12.
- High winds across portions of the Aleutians, Tue-Wed, Jun 11-Jun 12.
 
Detailed Summary:

The medium range period will begin on Monday with split flow--in the southern stream, upper-level 
ridging will be present across the Southwest to Southern Plains, with troughing in the Southeast. 
In the northern stream, more upper-level troughing is expected for the north central U.S., and 
ridging will start to build into the West Coast behind it. This pattern will lead to excessive heat 
for far southern Texas on Monday, with heat indices over 105 degrees F. By Tuesday and Wednesday, 
the northern and southern stream troughs combine, and the central and eastern U.S. will generally 
see below average temperatures throughout the workweek due to the troughing. On the contrary, the 
forecast for the western U.S. is for much above average temperatures and even record-setting heat 
possible as the anomalous ridging builds. The core of the warmth should build northward from 
California on Monday into the Pacific Northwest on Tuesday and Wednesday, and spread into the 
Northern Great Basin and Northern Rockies on Wednesday and Thursday. As the ridging relaxes by the 
end of the week, the much above average warmth should decrease in magnitude, but somewhat above 
average temperatures could still be present for the Northern Great Basin and Northern Rockies. 

In the eastern U.S., moisture will stream in ahead of the aforementioned troughs and help create 
heavy rainfall. The focus of the heavy rainfall should be across the Lower Great Lakes and the 
northern Mid-Atlantic to the Central Appalachians on Monday, and shifting farther south into the 
southern Mid-Atlantic and the Southeast by Tuesday and Wednesday. The Carolinas are expecting lots 
of rain over this weekend, so even though some of these areas are outlooked for drought, flooding 
is a possibility for some areas where heavy rain occurs.

As a surface low pressure system moves through the Gulf of Alaska early to mid next week, 
precipitation is expected for south central to southeastern mainland Alaska and into the Alaska 
Panhandle. While precipitation should remain all rain in much of the Panhandle, some snow is 
possible farther west especially in higher elevations, so chose to use Heavy Precipitation to 
outlook that area. Additionally, borderline high winds are possible in the western Aleutians on 
Tuesday and Wednesday as another surface low approaches and moves across the islands. 


Tate