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

Record Heat for the Intermountain West and Northern Plains; Heavy Rainfall and Severe Weather Threats

Record setting heat is expected over the next several days from the Intermountain West through the northern Plains. Furthermore, fire weather concerns increase with dry and breezy conditions. Meanwhile, heavy rainfall and severe thunderstorm threats for the Ohio/Tennessee Valleys, central Appalachians and Southeast today. The threat shifts to central Gulf Coast and across central Texas this week. 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