STORM SUMMARY NUMBER 4 FOR MAJOR WINTER STORM OVER THE NORTH
CENTRAL U.S.
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD
300 PM CST THU MAR 1 2007

...MAJOR STORM CONTINUING OVER THE CENTRAL PLAINS EXPECTED TO
BRING A VARIETY OF WEATHER FROM HEAVY SNOW...HEAVY RAIN...AND
SEVERE WEATHER TO PORTIONS OF THE EASTERN U.S. OVER THE NEXT TWO
DAYS...

BLIZZARD WARNINGS ARE IN EFFECT FOR PORTIONS OF WESTERN
IOWA...NORTHEASTERN NEBRASKA...EASTERN SOUTH DAKOTA...SOUTHWESTERN
MINNESOTA...AS WELL AS ALONG SECTIONS OF THE WESTERN SHORE OF LAKE
SUPERIOR IN MINNESOTA AND WISCONSIN.

WINTER STORM WARNINGS ARE IN EFFECT FOR PORTIONS OF IOWA...EASTERN
NEBRASKA...EASTERN NORTH DAKOTA...MUCH OF
MINNESOTA...WISCONSIN...AND NORTHERN MICHIGAN AS WELL AS THE UPPER
PENINSULA. FARTHER EAST...WINTER STORM WARNINGS HAVE BEEN ISSUED
FOR CENTRAL AND EASTERN NEW YORK STATE...VERMONT...NEW
HAMPSHIRE...AND MUCH OF MAINE.

WINTER STORM WATCHES ARE IN EFFECT FOR A PORTIONS OF NORTH CENTRAL
NEBRASKA...AND INTO NEW ENGLAND INCLUDING PORTIONS OF EASTERN NEW
YORK STATE...MASSACHUSETTS...AND EASTERN MAINE.

FREEZING RAIN ADVISORIES HAVE BEEN CANCELED ACROSS THE AFFECTED
AREAS.

FLOOD AND FLASH FLOOD WARNINGS ARE IN EFFECT FOR PORTIONS OF
WESTERN KANSAS... NORTHWESTERN MISSOURI... ILLINOIS...INDIANA AND
OHIO.

FLOOD WATCHES ARE IN EFFECT FOR PORTIONS OF
ILLINOIS...INDIANA...OHIO...PENNSYLVANIA...EASTERN WEST
VIRGINIA...NORTHERN VIRGINIA...MARYLAND...NORTHERN
DELAWARE...WESTERN NEW JERSEY...SOUTHEASTERN NEW
YORK...CONNECTICUT...RHODE ISLAND...AND SOUTHEASTERN
MASSACHUSETTS.

TORNADO WATCHES ARE IN EFFECT FOR SECTIONS OF THE OHIO AND
TENNESSEE VALLEYS...SOUTHEAST LOUISIANA AND THE SOUTHEASTERN
UNITED STATES. SOME OF THESE WATCHES ARE LISTED AS A PARTICULARLY
DANGEROUS SITUATION MEANING AN INCREASED THREAT OF
TORNADOES...HAIL AND WIND EXISTS WITHIN THESE WATCHES.

AT 200 PM CST...A STRONG 979 MILLIBAR LOW PRESSURE CENTER WAS
LOCATED OVER CENTRAL IOWA ABOUT 45 MILES NORTHEAST OF DES MOINES.
THIS LOW HAS BEEN SLOWLY MOVING TO THE NORTH NORTHEAST AND IS
EXPECTED TURN MORE NORTHEASTWARD OVER THE NEXT 12 HOURS. THE
ASSOCIATED COLD FRONT EXTENDS SOUTH SOUTHWESTWARD THROUGH THE
CENTER OF THE COUNTRY...JUST EAST OF THE MISSISSIPPI RIVER...INTO
THE GULF OF MEXICO AND INTO NORTHERN MEXICO.

...SELECTED STORM TOTAL SNOWFALL ACCUMULATIONS IN INCHES AS OF 200
PM CST...

...NORTH DAKOTA...

WISHEK                       12.0 
LISBON                       11.0 
JAMESTOWN                    10.0 
VALLEY CITY                   9.0 
FORT RANSOM                   8.0 
HEBRON                        8.0 
LITCHVILLE                    7.5 
DUNN CENTER                   7.0
GRAND FORKS                   6.5  
ASHLEY 7NE                    6.0  
MINOT AIR BASE                6.0 
TROGA                         6.0
WILLISTON                     6.0 
FARGO                         4.7 
BISMARCK                      4.5 
DICKINSON                     4.5

...SOUTH DAKOTA...

CLARK                        11.0 
VICTOR                       10.0 
WATERTOWN                     8.0 
ROSCOE                        6.0 
ABERDEEN                      6.0 

...MINNESOTA...

MINNEAPOLIS-ST. PAUL          8.0 
FAIRMONT                      7.0 
SLAYTON                       7.0 
DULUTH 7 NNW                  6.0 
HINCKLEY 1 SE                 6.0 
FOREST LAKE                   6.0 
NEW AUBURN                    6.0 
JACKSON                       5.0 

...NEBRASKA...

ONAWA                        12.0 
OMAHA                         8.0 
BENNET                        6.0 
DESHLER                       2.0 

...IOWA...

HARLAN                       14.0 
SIOUX FALLS                   8.0 
SPIRIT LAKE                   7.5 
SIOUX CITY                    6.7 

...WISCONSIN....

WEBSTER 1 S                   3.6 
MANITOWOC                     3.0 
POPLAR                        2.3 
BROOKFIELD                    2.3 
BROWN DEER                    2.3 
WAUKESHA 3 S                  2.0 

THE LATEST NOAA NATIONAL WEATHER SERVICE RADARS ARE SHOWING AN
EXTENSIVE AREA OF PRECIPITATION FROM THE UPPER MISSISSIPPI
VALLEY...INTO THE GREAT LAKES REGION AND SOUTHWARD TO THE GULF OF
MEXICO...MAINLY EAST OF THE MISSISSIPPI RIVER. SNOW IS CONFINED TO
THE WESTERN AND NORTHERN PORTIONS OF THE PRECIPITATION SHIELD
ACROSS SECTIONS OF WESTERN IOWA AND MINNESOTA EASTWARD INTO NEW
YORK STATE. LIGHT TO MODERATE RAIN...WITH EMBEDDED
THUNDERSTORMS...SOME SEVERE...ARE NOTED FROM THE OHIO VALLEY AND
WESTERN MID ATLANTIC SOUTHWARD TO THE GULF OF MEXICO. THE STORM
SYSTEM AND ITS PRECIPITATION ARE FORECAST TO SLOWLY MOVE EASTWARD
THIS EVENING REACHING THE EAST COAST OVERNIGHT.

ON FRIDAY...THIS LOW WILL CONTINUE A SLOW EAST NORTHEASTWARD
PROGRESSION INTO THE WESTERN GREAT LAKES REGION. LOCALLY VERY
HEAVY SNOWS AND BLIZZARD OR NEAR BLIZZARD CONDITIONS WILL
ACCOMPANY THIS AREA OF LOW PRESSURE. TOTAL SNOW ACCUMULATIONS
COULD EXCEED 12 INCHES OVER A LARGE AREA FROM MINNESOTA EASTWARD
THROUGH THE GREAT LAKES INTO NORTHERN NEW YORK AND NEW ENGLAND.
LATER TONIGHT AND EARLY FRIDAY MORNING...A SECONDARY AREA OF LOW
PRESSURE IS EXPECTED TO DEVELOP ALONG THE MID ATLANTIC COAST AND
MOVE NORTHEASTWARD THROUGH NEW ENGLAND...BRINGING THE POTENTIAL
FOR HEAVY RAIN TO PARTS OF THE MID ATLANTIC STATES AND HEAVY SNOW
TO PORTIONS OF THE NORTHEAST. A THREAT FOR FREEZING RAIN EXISTS
FROM PORTIONS OF THE GREAT LAKES EASTWARD INTO CENTRAL AND EASTERN
NEW YORK STATE AND NEW ENGLAND. ICE ACCUMULATIONS OF OVER 0.25"
ARE POSSIBLE ACROSS THESE REGIONS.  

VERY HEAVY RAIN IS POSSIBLE FROM THE GULF COAST STATES NORTHWARD
INTO THE MID ATLANTIC REGION THROUGH FRIDAY...AS VERY MOIST AIR
FLOWS NORTHWARD FROM THE GULF OF MEXICO AHEAD OF THE COLD FRONT
FORECAST TO PUSH THROUGH THE AREA. THE STORM WILL FINALLY EXIT THE
NORTHEAST DURING THE DAY SATURDAY. 

THE NEXT STORM SUMMARY WILL BE ISSUED BY THE HYDROMETEOROLOGICAL
PREDICTION CENTER AT 900 PM CST.  PLEASE REFER TO YOUR LOCAL
NATIONAL WEATHER SERVICE FORECAST OFFICE FOR ADDITIONAL
INFORMATION ON THIS EVENT. 

OTTO