US Day 3-7 Hazards Outlook
NWS Weather Prediction Center College Park MD
410 PM EDT Mon Oct 26 2020
 
Valid Thursday October 29 2020 - Monday November 02 2020
 
Hazards:
- Heavy rain across portions of the Northeast, the Central/Southern Appalachians, the Mid-Atlantic, 
the Southeast, the Great Lakes, and the Ohio Valley, Thu, Oct 29.
- Much below normal temperatures across portions of the Plains, the Central Rockies, the 
Mississippi Valley, and the Southwest, Thu, Oct 29.
- Heavy precipitation across portions of the Alaska Panhandle and mainland Alaska, Fri-Sat, Oct 
30-Oct 31.
 
Detailed Summary:

Hurricane ZETA is forecast to move northward across the Gulf of Mexico and make landfall Wednesday 
evening over Southeast Louisiana.  After  landfall, the storm will move northeastward while 
weakening moving off the Mid-Atlantic Coast by Friday.  ZETA will interact with a nearby front 
producing heavy rain over parts of the Mid-Atlantic, Southern/Central Appalachians, and parts of 
the Ohio Valley on Thursday.  The moisture associated with ZETA will move into cold air over 
Northern New England producing snow over the area but the snow will not be heavy enough to put out 
a separate area of heavy snow or heavy precipitation.  

Meanwhile, cold high pressure over the Central Rockies and extending into parts of the Southern 
Rockies will aid in allowing temperatures to be 12 to 20 degrees below normal over parts of the the 
Plains, Mississippi Valley on Thursday.  The temperatures will begin to moderate after Thursday.   

For Alaska, low pressure south of the Aleutians on Thursday will move eastward across the Gulf of 
Alaska moving into the Alaska Panhandle by Saturday.  The system will be accompanied by moisture 
that will, likewise, move into the Panhandle.  The storm will produce heavy precipitation from near 
Yakutat to near Sitka on Friday into Saturday.    

For Hawaii, deep tropical moisture over the island chain will produce several inches of rain each 
day which may result in flooding.  There is currently a Flash Flood Watch up that will remain 
through Thursday.



Ziegenfelder