STORM SUMMARY NUMBER 2 FOR CENTRAL ROCKIES/GREAT PLAINS STORM 
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD  
1000 PM CDT SAT MAY 5 2007  
  
...LATE SEASON WINTER STORM AFFECTING PARTS OF THE CENTRAL ROCKIES
WHILE SEVERE THUNDERSTORMS AND HEAVY RAIN IMPACTING PARTS OF THE
PLAINS STATES...

WINTER STORMS WARNINGS ARE IN EFFECT FOR PORTIONS OF
WYOMING...WESTERN COLORADO AND NORTHEASTERN UTAH.

A HEAVY SNOW WARNINGS HAS BEEN ISSUED FOR NORTHEASTERN UTAH.

SNOW ADVISORIES ARE IN EFFECT FOR PORTIONS OF UTAH...WYOMING AND
WESTERN COLORADO.

SNOW AND BLOWING SNOW ADVISORIES ARE IN EFFECT FOR PORTIONS OF
CENTRAL COLORADO.

FLOOD AND FLASH FLOOD WARNINGS HAVE BEEN ISSUED FOR PORTIONS OF
NORTHERN AND SOUTHEASTERN NEBRASKA...PARTS OF EASTERN SOUTH
DAKOTA...AND A SMALL AREA OF CENTRAL KANSAS.

FLOOD WATCHES ARE IN EFFECT FOR PARTS OF SOUTHERN
MONTANA...EXTREME NORTHEASTERN WYOMING...PORTIONS OF SOUTHWESTERN
SOUTH DAKOTA...AND A PART OF SOUTHEASTERN NORTH DAKOTA.

A TORNADO WATCH IS IN EFFECT FOR A LARGE AREA OF THE PLAINS STATES
EXTENDING FROM WEST CENTRAL TEXAS NORTHWARD TO NORTHERN PORTIONS
OF SOUTH DAKOTA. THE WATCH IS IN EFFECT UNTIL 10 PM CDT FOR MUCH
OF THE CENTRAL AND NORTHERN PLAINS STATES WHILE IT WILL STAY IN
EFFECT UNTIL 3 AM CDT IN THE AREAS FARTHER SOUTHWARD.

AT 900 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED
SCATTERED PRECIPITATION ASSOCIATED WITH THIS STORM EXTENDING FROM
THE SOUTHWEST NORTHWARD INTO THE NORTHERN ROCKIES AND EASTWARD
INTO THE CENTRAL AND NORTHERN PLAINS. AND OVER THE PAST SEVERAL
HOURS...NUMEROUS THUNDERSTORMS HAVE BEGUN TO DEVELOP OVER PARTS OF
OKLAHOMA. THESE THUNDERSTORMS HAVE BEEN GENERALLY MOVING TOWARD
THE NORTH-NORTHEAST WITH A PAST HISTORY OF DAMAGING WINDS...LARGE
HAIL...AND TORNADOES. ELSEWHERE...SNOW HAS BEEN FALLING IN PARTS
OF WYOMING...NORTHERN UTAH...AND A LARGE PORTION OF THE COLORADO
ROCKY MOUNTAINS.


...SELECTED RAINFALL TOTALS IN INCHES AS OF 9 PM CDT...

...SOUTH DAKOTA...

CLARK                               4.47
HURON REGIONAL ARPT                 4.18 
WEBSTER SCHOOL                      3.65
CHAMBERLAIN                         2.73 
LEAD                                2.21 
FORT MEADE                          2.11 
WHITE LAKE                          2.09
WINNER                              2.09
WESSINGTON SPRINGS                  2.03              
SIOUX FALLS 5SE                     1.91
ABERDEEN                            1.25

...NEBRASKA...

BLADEN 8.7SW                        3.49 
EDDYVILLE 11.4N                     3.36 
BERWYN 5.9SSW                       3.29 
OCONTO 0.9ESE                       3.28 
LINCOLN MUNICIPAL                   3.24 
AINSWORTH AIRPORT                   3.07 
VALLEY NWS OFFICE                   2.71 
BROKEN BOW                          2.02 
VALENTINE                           1.87 

...KANSAS...

GREAT BEND                          2.80 


...SELECTED SNOWFALL TOTALS IN INCHES AS OF 9 PM CDT...

...WYOMING...

HOBBS PARK                         27.0 
MARQUETTE                          22.0 
KIRWIN                             21.0 
ST LAWRENCE ALT                    20.0 
BURGESS JUNCTION                   20.0 
TOWNSEND CREEK                     19.0 
COLD SPRINGS                       19.0 
DOME LAKE                          18.0 
BIG GOOSE                          18.0 
LITTLE WARM                        18.0 
GRAVE SPRINGS                      15.0 
SOUTH PASS                         13.0 
DEER PARK                          13.0 
ARMNITO 21N                        13.0 
CASPER MOUNTAIN                    12.0 
HANSEN SAWMILL                     12.0 

...COLORADO...

OURAY                               2.0
VALLECITO DAM                       2.0

...UTAH...

ALTA COLLINS                        9.0
SNOWBIRD                            8.5
GOTHIC                              4.5
BRIGHTON CREST                      4.0
PAGOSA SPRINGS 12NW                 2.0

...MONTANA...

COLE CREEK                          6.0 
RED LODGE                           6.0 
ROSCOE 4SE                          6.0 
DEAN 11SW                           5.0 

AT 900 PM CDT...A 997 MILLIBAR LOW PRESSURE CENTER CURRENTLY
LOCATED OVER SOUTHERN SOUTH DAKOTA AND IS FORECASTED TO MOVE
NORTHWARD WHILE SLIGHTLY WEAKENING OVER THE NEXT 24 HOURS. AREAS
OF PRECIPITATION WILL CONTINUE TO EXPAND BOTH NORTHWARD AND
EASTWARD WITH MANY AREAS EXPECTED TO RECEIVE MODERATE TO HEAVY
AMOUNTS OF RAINFALL. 2 TO 4 INCHES OF RAINFALL CAN BE EXPECTED FOR
PARTS OF NEBRASKA...KANSAS...OKLAHOMA...IOWA...AND MISSOURI. IN
ADDITION TO THE RAINFALL THREAT...A SIGNIFICANT SEVERE WEATHER
OUTBREAK IS IN PROGRESS OVER THE CENTRAL PLAINS...ESPECIALLY OVER
CENTRAL KANSAS AND CENTRAL NEBRASKA...WITH SOME TORNADOES
EXPECTED.

FARTHER WEST...THE MAIN THREAT WILL BE MODERATE AMOUNTS OF
SNOWFALL OVER THE NORTHERN AND CENTRAL ROCKY MOUNTAINS. 4 TO 8
INCHES ARE ANTICIPATED THROUGH SUNDAY WITH ISOLATED AREAS
RECEIVING 12 INCHES. AS THE STORM SYSTEM PUSHES NORTHWARD...HEAVY
SNOWFALL WILL DIMINISH AS A SIGNIFICANT WEATHER THREAT.

THE NEXT STORM SUMMARY WILL BE ISSUED BY THE HYDROMETEOROLOGICAL
PREDICTION AT 4 AM CDT. PLEASE REFER TO YOUR LOCAL NATIONAL
WEATHER SERVICE FORECAST OFFICE FOR ADDITIONAL INFORMATION ON THIS
EVENT.

RUBIN-OSTER