US Day 3-7 Hazards Outlook
NWS Weather Prediction Center College Park MD
348 PM EST Wed Nov 13 2019
 
Valid Saturday November 16 2019 - Wednesday November 20 2019
 
Hazards:
- Heavy rain across portions of the Mid-Atlantic, Sat-Sun, Nov 16-Nov 17.
- Flooding occurring or imminent across portions of the Northern Plains.
- High winds across portions of the Southeast, the Mid-Atlantic, and the Northeast, Sat-Mon, Nov 
16-Nov 18.
- Much below normal temperatures across portions of the Northeast, the Central Appalachians, the 
Middle Mississippi Valley, the Mid-Atlantic, the Southeast, the Great Lakes, and the Ohio Valley, 
Sat-Sun, Nov 16-Nov 17.
- Heavy precipitation across portions of the Alaska Panhandle and mainland Alaska, Tue-Wed, Nov 
19-Nov 20.
- Heavy precipitation across portions of the Alaska Panhandle and mainland Alaska, Sat-Sun, Nov 
16-Nov 17.
- High significant wave heights for coastal portions of the Aleutians, Mon-Tue, Nov 18-Nov 19.
 
Detailed Summary:

Cold air associated with high pressure over Eastern Ontario in Eastern Canada will aid in producing 
and area of much below normal temperatures over parts of the Northeast, Great Lakes, Ohio Valley, 
Mid-Atlantic, and Southeast on Saturday.  In addition, as low pressure along the Southeast Coast 
moves northeastward to the Carolina Coast, on Saturday into Sunday.  The circulation around the low 
will aid in producing onshore flow off the Atlantic producing rain.  The rain will be heavy enough 
to meet the criteria for depicting an area of heavy rain over parts of the North Carolina Coast on 
Saturday into Sunday.  Furthermore, with deep low pressure along the Southeast Coast and strong 
high pressure building over the Northeast, strong wind will develop along the East Coast from Cape 
Cod to the northern portion of the South Carolina on Saturday and gradually tapering off on Monday. 
 The hazard of high winds will be depicted on the hazards map from Saturday into Monday.

For Hawaii, very humid air and upper-level energy will aid in producing heavy rain over parts of 
the Hawaiian Island on Saturday into Monday.

Over Alaska, low pressure over the Gulf of Alaska and associated front will move eastward onshore 
over the Alaska Panhandle and Western Canada on Saturday into Sunday.  A plume of moisture 
associated with the system will stream moisture into the Alaskan Panhandle producing rain and snow 
that will meet the criteria for heavy precipitation over the Panhandle on Saturday into Sunday.  
Additionally, a deep area of low pressure will move over the Aleutians on Monday into Tuesday.  The 
waves associated with the area of low pressure will be 20 feet or higher meeting the criteria for 
significant waves on the Pacific side of the Aleutians from the Central Islands westward on Monday 
and Tuesday.  The front associated with the system will move into the mainland on Tuesday as the 
associated plume of moisture will move into the southern mainland producing an area of rain and 
snow that will meet the criteria for heavy precipitation over parts of the southern mainland into 
parts of the Panhandle on Tuesday into Wednesday.  The area of heavy precipitation will extend from 
the eastern portion of Kenai Peninsula eastward into the Alaska Panhandle north of Juneau on 
Tuesday into Wednesday.  

Ziegenfelder