Severe Thunderstorm Warning 57, NWS Grand Forks, ND

FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
333 AM CDT SUN JUN 9 2002

.SHORT TERM...
WATER VAPOR LOOP SHOWS UPPER LOW OVER THE PACIFIC NORTHWEST WITH A
WAVE ON THE WEST SIDE. WAVE APPEARS TO BE DIGGING FARTHER TO THE
SOUTHWEST THAN THE ETA FORECAST. SO PREFER THE SLOWER AVN FOR THE
UPPER AIR FEATURES. HOWEVER PREFER THE ETA HANDLING THE
PRECIPITATION OVER THE NORTHERN PLAINS. 850 THETA-E RIDGE WAS ACROSS
EXTENDED FROM TX TO SD. GOOD E-W THETA-E GRADIENT WAS ACROSS ND WITH
LOW LEVEL JET FLOW ACROSS THE GRADIENT. GRADIENT WILL SHIFT INTO
SOUTHERN CANADA TODAY. ANOTHER ROUND OF THUNDERSTORMS IS EXPECTED
SUNDAY NIGHT AS DRIER/COOLER AIR MOVES INTO WESTERN ND. STORMS WILL
FIRE IN THE WEST AND MOVE INTO THE EASTERN ND. ALSO LOW LEVEL JET
REDEVELOPS SUNDAY NIGHT. DRIER/COOLER AIR CONTINUES TO MOVE INTO
EASTERN ND ON MONDAY. WRAP AROUND PRECIPITATION WILL MOVE INTO FOR
TUESDAY.

.LONG TERM...
NO CHANGES.

.FGF...FLOOD WATCH ENTIRE FORECAST AREA TODAY THROUGH MONDAY.
SEVERE THUNDERSTORM WATCH FOR SOUTHEAST ND AND PARTS OF NORTHEAST ND
TIL 7AM CDT.
HOPPES

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS, ND
613 AM CDT SUN JUN 9 2002

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1220 AM    DEVILS LAKE               ND   1.00 INCH HAIL
06/09/02   RAMSEY

1224 AM    DEVILS LAKE               ND   1.25 INCH HAIL
06/09/02   RAMSEY

1230 AM    REYNOLDS                  ND   .75 INCH HAIL
06/09/02   TRAILL

0140 AM    5 E WAUBUN                MN   .75 INCH HAIL
06/09/02   MAHNOMEN

0230 AM    GRAND FORKS               ND   FLASH FLOODS
06/09/02   GRAND FORKS                    NUMEROUS CITY STREETS
                                          FLOODED. CARS STRANDED
                                          ALONG UNIVERSITY AVENUE
                                          NEAR THE UNIVERSITY OF
                                          NORTH DAKOTA CAMPUS.

0325 AM    9 NE ADA                  MN   WIND DAMAGE
06/09/02   NORMAN                         SPOTTER ESTIMATED 80 MPH
                                          WIND GUST. 8 TO 10 INCH
                                          DIAMETER TREES DOWN AND
                                          WINDOW BLOWN OUT.

0505 AM    6 SE TWIN VALLEY          MN   .75 INCH HAIL
06/09/02   NORMAN

0605 AM    5 W SYRE                  MN   FLASH FLOODS
06/09/02   NORMAN                         HIGHWAY 113 FLOODED

MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024-
026>030-038-039-049-052>054-091400-

SPECIAL WEATHER STATEMENT
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
718 AM CDT SUN JUN 9 2002

...SEVERE THUNDERSTORMS ARE EXPECTED ACROSS EASTERN NORTH DAKOTA AND
NORTHWEST AND WEST CENTRAL MINNESOTA EARLY THIS MORNING AND AGAIN
TONIGHT...

SYNOPSIS...VERY UNSTABLE AIR WILL REMAIN ACROSS THE NORTHERN PLAINS
THROUGH MONDAY MORNING. TEMPERATURES WILL RISE TO THE UPPER 80S IN
THE SOUTH AND EASTERN COUNTIES WITH DEWPOINTS APPROACHING 70 DEGREES.
LOW PRESSURE OVER WESTERN SOUTH DAKOTA WILL MOVE SLOWLY INTO
SOUTHEAST NORTH DAKOTA BY MONDAY MORNING. COOLER DRIER AIR OVER
WESTERN NORTH DAKOTA WILL BEGIN TO SLOWLY SHIFT EAST THROUGH MONDAY
MORNING.

AREA OF CONCERN...A SLIGHT RISK OF SEVERE WEATHER WILL OCCUR EARLY
THIS MORNING SOUTH OF A LINE FROM VALLEY CITY ND TO BEMIDJI MN.
ANOTHER SLIGHT RISK OF SEVERE STORM WILL OCCUR SUNDAY NIGHT OVER ALL
OF EASTERN NORTH DAKOTA AND NORTHWEST AND WEST CENTRAL MINNESOTA.

TIME...UNTIL 10 AM CDT FOR THE SOUTHERN PORTION OF THE REGION. THE
SECOND ROUND OF THUNDERSTORMS ARE EXPECTED AFTER 4 PM.

TYPE OF HAZARD...MAINLY FLOODING. SOME LARGE HAIL AND SOME DAMAGING
WINDS.

HOPPES
NNNN

MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024-
026>030-038-039-049-052>054-101430-

SPECIAL WEATHER STATEMENT
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
720 AM CDT SUN JUN 9 2002

...SEVERE THUNDERSTORMS ARE EXPECTED ACROSS EASTERN NORTH DAKOTA AND
NORTHWEST AND WEST CENTRAL MINNESOTA TODAY AND THIS EVENING...

SYNOPSIS...A WARM FRONT EXTENDS FROM NEAR BEMIDJI TO FARGO TO
MOBRIDGE SOUTH DAKOTA.  LOW PRESSURE WILL MOVE NORTHEAST ALONG THE
FRONT TODAY. A MOIST AND UNSTABLE AIRMASS WILL EXIST OVER THE AREA
TODAY AND THIS EVENING.  THEN AS THE SYSTEM MOVES EAST OF THE AREA
OVERNIGHT...THE THREAT FOR SEVERE WEATHER WILL END.

AREA OF CONCERN...A SLIGHT RISK OF SEVERE WEATHER WILL OCCUR EARLY
THIS MORNING NORTH OF A DEVILS LAKE TO GRAFTON TO BAUDETTE LINE.
THEN ALL OF EASTERN NORTH DAKOTA AND NORTHWEST AND WEST CENTRAL
MINNESOTA IS UNDER A SLIGHT RISK LATER THIS AFTERNOON AND EARLY
EVENING.

TIME...FROM 7 AM UNTIL 10 AM THIS MORNING...AND THEN AGAIN FROM 3 PM
UNTIL 9 PM THIS EVENING.

TYPE OF HAZARD...LARGE HAIL...DAMAGING WIND GUSTS...AND FLOODING.

RIDDLE

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