548  
ACUS41 KWBC 090903  
SCCNS1  
 
STORM SUMMARY NUMBER 02 FOR NORTHERN ROCKIES TO THE GREAT LAKES  
WINTER STORM  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
300 AM CST FRI FEB 09 2018  
 
...LIGHT TO MODERATE SNOW QUICKLY MOVING EAST THROUGH THE UPPER  
MIDWEST WITH THE GREATEST SHORT TERM ACCUMULATIONS EXPECTED FROM  
THE WISCONSIN/ILLINOIS BORDER INTO SOUTHERN MICHIGAN AND NORTHERN  
INDIANA...  
 
WIND CHILL ADVISORIES ARE IN EFFECT FROM NORTHEAST MONTANA TO FAR  
NORTHWEST WISCONSIN.  
 
WINTER STORM WARNINGS ARE IN EFFECT FOR MUCH OF MONTANA INTO THE  
ABSAROKA AND BIG HORN MOUNTAINS OF WYOMING. WINTER STORM WARNINGS  
ARE ALSO IN PLACE FROM CENTRAL IOWA...EASTWARD ACROSS SOUTHERN  
WISCONSIN...NORTHERN ILLINOIS...SOUTHERN MICHIGAN...NORTHERN  
INDIANA AND NORTHWESTERN OHIO.  
 
WINTER WEATHER ADVISORIES SURROUND THE WINTER STORM WARNINGS AND  
ARE IN EFFECT FROM MONTANA THROUGH THE MIDWEST INTO LOWER MICHIGAN.  
 
FOR A DETAILED GRAPHICAL DEPICTION OF THE LATEST  
WATCHES...WARNINGS AND ADVISORIES...PLEASE SEE WWW.WEATHER.GOV  
 
AT 200 AM CST...SURFACE OBSERVATIONS CONTINUED TO INDICATE A  
WELL-DEFINED SURFACE FRONT EXTENDING WEST FROM THE OHIO AND  
MID-MISSISSIPPI VALLEYS BACK INTO THE CENTRAL HIGH PLAINS AND  
NORTHWEST FROM THE CENTRAL HIGH PLAINS INTO THE NORTHERN ROCKIES.  
THE FRONT WAS STATIONARY ACROSS THE MID-MISSISSIPPI VALLEY BUT WAS  
SLOWLY ADVANCING SOUTH ACROSS THE CENTRAL HIGH PLAINS AND IT IS  
HERE ACROSS THE CENTRAL HIGH PLAINS THAT THE TEMPERATURE GRADIENT  
WAS NOTED TO BE THE STRONGEST. AT 2 AM...TEMPERATURES RANGED FROM  
THE MID 50S ACROSS NORTHERN COLORADO TO THE SINGLE DIGITS IN THE  
NORTHERN NEBRASKA PANHANDLE. FARTHER NORTH...TEMPERATURES WERE  
ZERO TO TEN BELOW FROM EASTERN MONTANA INTO THE DAKOTAS. IN  
ADDITION TO COLDER TEMPERATURES...STRONG GUSTY WINDS HAVE BEEN  
OBSERVED NORTH OF THE FRONT ACROSS PORTIONS OF MONTANA AND  
NORTHERN WYOMING. RADAR IMAGERY INDICATED AREAS OF LIGHT TO  
MODERATE SNOW FALLING NORTH OF THE BOUNDARY FROM WESTERN MONTANA  
INTO THE CENTRAL/NORTHERN HIGH PLAINS AND EASTWARD FROM THE UPPER  
MISSISSIPPI VALLEY INTO LOWER MICHIGAN AND NORTHERN INDIANA/OHIO.  
 
...SELECTED STORM TOTAL SNOWFALL IN INCHES FROM 900 PM CST WED FEB  
07 THROUGH 200 AM CST FRI FEB 09...  
   
..IOWA
 
 
READLYN 6.0  
DUBUQUE 2 WNW 4.8  
FORT DODGE 4.5  
WAUKON 4.5  
CEDAR FALLS 4.0  
FREEPORT 1 E 4.0  
JEFFERSON 1 S 4.0  
   
..ILLINOIS
 
 
ROCKFORD 4.0  
ROCHELLE 2.7  
ROMEOVILLE 2.0  
CHICAGO 3 SSE 1.6  
   
..MONTANA
 
 
POWDERVILLE 8 NNE 12.0  
HAVRE 1 S 11.8  
EKALAKA 8.7  
FORSYTH 0.4 ENE 8.0  
ISMAY 27.6 WSW 8.0  
MALTA 33 SW 8.0  
ROCK SPRINGS 8.0  
   
..SOUTH DAKOTA
 
 
RED ELM 9 WSW 6.0  
FORT PIERRE 1 ENE 5.7  
STEPHAN 2 E 4.5  
GANN BALLEY 4.0  
SALEM 5 NE 4.0  
   
..WISCONSIN
 
 
DESOTO 1 SE 5.0  
RICHLAND CENTER 5.0  
PLATTEVILLE 4.3  
FITCHBURG 3.1  
 
...SELECTED PEAK WIND GUSTS IN MILES PER HOUR EARLIER IN THE  
EVENT...  
   
..MONTANA
 
 
YELLOWSTONE CLUB - TIMBER STATION 62  
SIEBEN FLATS MDT 59  
   
..WYOMING
 
 
GARRETT 11 SSE 67  
WHEATLAND 9 S 64  
W ROCK RIVER 61  
CENTENNIAL 14 NE 60  
GLENDO 9 S 60  
CHEYENNE 12 WNW 58  
SHERIDAN 2 SSW 57  
 
A WEAK SURFACE LOW IS FORECAST TO DEVELOP ALONG THE SURFACE FRONT  
AND TRACK NORTHEAST FROM THE MID-MISSISSIPPI VALLEY EARLY FRIDAY  
MORNING INTO THE SOUTHERN GREAT LAKES REGION FRIDAY AFTERNOON.  
MODERATE TO HEAVY SNOWS ARE POSSIBLE NORTH OF THE FRONT WITH TWO  
ROUNDS OF SNOW. ROUND ONE WILL CONTINUE TO MOVE EAST ACROSS THE  
SOUTHERN GREAT LAKES REGION INTO NORTHERN NEW YORK AND NEW ENGLAND  
TONIGHT WHILE ROUND TWO MOVES INTO THE MIDWEST LATER TODAY AND  
TONIGHT. ADDITIONAL ACCUMULATIONS OF 4 TO 8 INCHES ARE EXPECTED  
THROUGH SATURDAY MORNING FROM SOUTHERN MICHIGAN INTO WESTERN AND  
NORTHERN NEW YORK...WITH LOCALLY EMBEDDED HIGHER AMOUNTS. AN  
ADDITIONAL TWO TO FOUR INCHES OF SNOW ARE EXPECTED FROM WYOMING  
INTO PORTIONS OF THE CENTRAL PLAINS AND MIDWEST THROUGH SATURDAY  
MORNING. ADDITIONAL SNOW IS EXPECTED FOR SOME OF THESE SAME  
LOCATIONS ON SUNDAY.  
 
THE NEXT STORM SUMMARY WILL BE ISSUED BY THE WEATHER PREDICTION  
CENTER AT 900 AM CST. PLEASE REFER TO YOUR LOCAL NATIONAL WEATHER  
SERVICE OFFICE FOR ADDITIONAL INFORMATION ON THIS EVENT.  
 
OTTO  

 
 
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