ACUS11 KWNS 131127
SWOMCD
SPC MCD 131126
MOZ000-KSZ000-131630-
MESOSCALE DISCUSSION 2077
NWS STORM PREDICTION CENTER NORMAN OK
0526 AM CST FRI DEC 13 2013
AREAS AFFECTED...NERN KS THROUGH WRN AND CNTRL MO
CONCERNING...FREEZING RAIN
VALID 131126Z - 131630Z
SUMMARY...FREEZING RAIN WITH .01-.05 INCH PER HOUR RATES WILL
DEVELOP THROUGH NERN KS AND WRN THROUGH CNTRL MO THIS MORNING.
DISCUSSION...LEADING EDGE OF AN EXPANSIVE AREA OF MOSTLY LIGHT RAIN
WITH SOME EMBEDDED HEAVIER SHOWERS IS MOVING THROUGH ERN KS INTO
SWRN MO WHERE SFC TEMPERATURES ARE IN THE UPPER 20S TO NEAR 30 F.
THIS CORRIDOR OF PRECIPITATION IS DEVELOPING IN ASSOCIATION WITH
WARM ADVECTION AND ISENTROPIC ASCENT ALONG A WARM CONVEYOR BELT
ATTENDING A PROGRESSIVE SHORTWAVE TROUGH AND WILL CONTINUE TO EXPAND
NEWD DURING THE MORNING. A STRONG SWLY LLJ HAS CONTRIBUTED TO A
SIGNIFICANT WARM NOSE ALOFT ABOVE THE SUBFREEZING SFC LAYER AND WILL
RESULT IN PRECIPITATION FALLING AS FREEZING RAIN AS IT DEVELOPS
THROUGH MO THIS MORNING. WARM ADVECTION IN THE NEAR SFC LAYER WILL
BE OFFSET FOR A WHILE BY EVAPORATIVE COOLING AS PRECIPITATION
INITIALLY FALLS THROUGH DRY AIR. HOWEVER...AS THE NEAR SFC LAYER
BECOMES SATURATED...TEMPERATURES SHOULD GRADUALLY WARM ABOVE
FREEZING LATER THIS MORNING. FORECAST SOUNDINGS SHOW NEWD
DEVELOPMENT OF A SHALLOW UNSTABLE LAYER. SOME OF THE RAIN APPEARS
CONVECTIVE IN NATURE...SUGGESTING RAINFALL RATES /THOUGH GENERALLY
LIGHT/ COULD BE ENHANCED AT TIMES WITHIN THE CONVECTIVE ELEMENTS.
..DIAL.. 12/13/2013
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...LSX...SGF...EAX...
LAT...LON 36689388 37789457 39079490 39009309 37649135 36879192
36689388
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
To unsubscribe from WX-STORM send e-mail to LISTSERV@LISTSERV.ILLINOIS.EDU with
"unsub wx-storm" in the body of your message. For more information write cnovy@cox.net.
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment