SPC AC 300727
DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0227 AM CDT SAT SEP 30 2006
VALID 021200Z - 031200Z
...NO SVR TSTM AREAS FORECAST...
...UPPER MS VLY AND CNTRL GRTLKS REGION...
H5 TROUGH EXPECTED TO DIG SEWD ACROSS THE CANADIAN ROCKIES ON SUNDAY
WILL SKIRT ALONG THE CANADIAN BORDER BEFORE EJECTING TOWARD HUDSON
BAY BY LATE MON. AN ATTENDANT SFC LOW WILL DEVELOP NEWD ACROSS THE
DAKS AND INTO MN BY MON NIGHT WITH A TRAILING COLD FRONT MOVING SEWD
INTO THE UPPER MS VLY AND NRN NEB BY LATE MON NIGHT.
AHEAD OF THE FRONT...MODIFIED GULF MSTR WILL CONTINUE TO ADVECT NWD
THROUGH THE SRN AND ERN PARTS OF THE PLAINS TO THE GRTLKS REGION.
PLUME OF MID-TROPOSPHERIC WARM AIR WILL STREAM NEWD AND LIMIT
SFC-BASED TSTMS ALONG THE COLD FRONT/LEE-TROUGH. MEANWHILE...
ONGOING EARLY MON CONVECTION ACROSS PARTS OF WI/MI WILL PROBABLY
WEAKEN DURING THE MORNING. COVERAGE AND INTENSITY MAY INCREASE
AGAIN BY LATE AFTN AS PARCEL TRAJECTORIES EMANATE FROM AN
INCREASINGLY HOT SOURCE REGION OVER THE PLAINS. THE STEEPENING
LAPSE RATES ALOFT AND INCREASING SHEAR ALONG BASE OF THE UPPER WAVE
MAY BE SUFFICIENT FOR ISOLD ELEVATED SVR STORMS PRODUCING HAIL FROM
PARTS OF THE UPR MS VLY EWD INTO THE CNTRL GRTLKS MON NIGHT.
..RACY.. 09/30/2006
CLICK TO GET WUUS03 PTSDY3 PRODUCT
NOTE: THE NEXT DAY 3 OUTLOOK IS SCHEDULED BY 1100Z
|
