National Weather Service United States Department of Commerce

Cold Front Moving Through the Northeast U.S. Monday; Atmospheric River to Impact the Pacific Northwest Midweek

A cold front will cross the Great Lakes and Northeast U.S. through Monday with gusty winds and areas of rain showers. A strong atmospheric river is expected to move into the Pacific Northwest by midweek bringing a threat for moderate to heavy rainfall, gusty winds, and mountain snows for parts of Washington, Oregon, northern California, and the Sierra Nevada. Read More >


ZCZC MKCSWOMCD ALL;343,0864 403,0825 363,0825 303,0864;
ACUS3 KMKC 182313
MKC MCD 182313

SELS MESOSCALE DISCUSSION FOR ...ERN KY/ERN TN/NERN AND CNTRL
AL/NRN GA... 
CONCERNING...SEVERE THUNDERSTORM POTENTIAL...

SVR WX/TORNADO OUTBREAK HAS BEEN IN PROGRESS ACRS PTNS OF THE LWR
OH AND TN VLYS INTO THE LWR MS VLY DURG THE PAST 3 TO 4 HRS. ACTVTY
IS OCRG IN A RGN OF VERY UNSTBL AIR AND STG SPD SHEAR. LTST MDL
DATA FROM THE RAPID UPDATE CYCLE SUGGESTS THAT THE ACTVTY WILL BE
MOVG EWD DURG THE NXT 3 TO 6 HRS EXTDG ALG THE WRN SIDE OF THE
APPALACHIAN CHAIN WITH HELICITY VALUES BTWN 300 AND 400 M2/S2.

WE ARE CURRENTLY MONITORING AREAS FM CNTRL AND ERN AL INTO NRN GA
FOR PSBL WW.

..MCCARTHY.. 05/18/95