998  
ACUS11 KWNS 051737  
SWOMCD  
SPC MCD 051736  
ILZ000-IAZ000-MOZ000-NEZ000-052330-  
 
MESOSCALE DISCUSSION 0048  
NWS STORM PREDICTION CENTER NORMAN OK  
1136 AM CST MON FEB 05 2018  
 
AREAS AFFECTED...IOWA AND VICINITY  
 
CONCERNING...HEAVY SNOW  
 
VALID 051736Z - 052330Z  
 
SUMMARY...A ZONE/BAND OF HEAVY SNOW -- FALLING AT LOCAL RATES IN  
EXCESS OF 1" PER HOUR -- WILL CONTINUE MOVING ACROSS THE IOWA  
VICINITY THIS AFTERNOON.  
 
DISCUSSION...LATEST SATELLITE IMAGERY SHOWS A SHORT-WAVE TROUGH  
WITHIN WEST-SOUTHWEST FLOW ALOFT MOVING ACROSS THE NEBRASKA/KANSAS  
VICINITY AT THIS TIME, WITH A SMALL/WELL-DEFINED BAROCLINIC LEAF  
EVIDENT OVER THE IOWA AREA. WITHIN THIS LEAF STRUCTURE, RADAR  
CONTINUES TO REVEAL AN AREA OF MODERATE TO LOCALLY HEAVY SNOWFALL,  
CROSSING THE MISSOURI VALLEY AND OVERSPREADING PARTS OF IOWA AT THIS  
TIME.  
 
AS QG ASCENT ASSOCIATED WITH THE SHORT-WAVE TROUGH CONTINUES  
SHIFTING EAST-SOUTHEASTWARD, EXPECT THE ZONE OF HEAVIEST  
PRECIPITATION TO MOVE ACROSS CENTRAL AND INTO EASTERN IOWA OVER THE  
NEXT SEVERAL HOURS. SOME AREAS WILL LIKELY EXPERIENCE SNOWFALL  
RATES IN EXCESS OF AN INCH PER HOUR FOR A PERIOD OF A COUPLE OF  
HOURS, AND A LONGER DURATION OF MODERATE SNOWFALL ADDING TO THE  
OVERALL ACCUMULATION.  
 
..GOSS.. 02/05/2018  
   
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT
 
 
ATTN...WFO...ILX...DVN...DMX...OAX...  
 
LAT...LON 41199617 42319520 42669220 42219083 41379017 40799057  
40589167 40849495 41199617  
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab SPC Page Main Text Page