Mesoscale Discussion issued issued at 6:13 PM on May 18, 1995

Storm Impacting the Northwest U.S.; Fire Weather Conditions in Southern California; Severe Weather in the South

A Pacific storm is bringing areas of low elevation rain, moderate to heavy mountain snow, and high winds to the Northwest. Strong Santa Ana winds and very dry conditions are producing elevated to critical fire weather conditions in southern California. Isolated strong to severe thunderstorms are possible through early Wednesday morning across parts of northeast Texas into western Tennessee. 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