Severe Thunderstorm Warning 136, NWS Sioux Falls, SD

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HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1045 AM CDT MON JUL 31 2006

SDZ038>040-050-052>071-MNZ071-072-080-081-089-090-097-098-
IAZ001>003-012>014-020>022-031-032-NEZ013-014-011200-
AURORA-BEADLE-BON HOMME-BROOKINGS-BRULE-BUENA VISTA IA-
CHARLES MIX-CHEROKEE IA-CLAY-CLAY IA-COTTONWOOD MN-DAKOTA NE-
DAVISON-DICKINSON IA-DIXON NE-DOUGLAS-GREGORY-HANSON-HUTCHINSON-
IDA IA-JACKSON MN-JERAULD-KINGSBURY-LAKE-LINCOLN-LINCOLN MN-
LYON IA-LYON MN-MCCOOK-MINER-MINNEHAHA-MOODY-MURRAY MN-NOBLES MN-
OBRIEN IA-OSCEOLA IA-PIPESTONE MN-PLYMOUTH IA-ROCK MN-SANBORN-
SIOUX IA-TURNER-UNION-WOODBURY IA-YANKTON-
1045 AM CDT MON JUL 31 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST SOUTH DAKOTA...
SOUTHWEST MINNESOTA...NORTHWEST IOWA...AND NORTHEAST NEBRASKA.

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS...
THERE WILL BE A CHANCE OF THUNDERSTORMS ACROSS THE AREA
TONIGHT...WITH THE BEST CHANCE NORTH OF INTERSTATE 90. A FEW OF
THE STORMS COULD BECOME SEVERE LATE THIS EVENING.

FIRE DANGER...
A RED FLAG WARNING IS IN EFFECT WEST OF A HURON TO TYNDALL LINE
THIS AFTERNOON AND EARLY EVENING. HIGH TEMPERATURES WILL VARY
FROM 100 TO 105 DEGREES AND RELATIVE HUMIDITIES WILL DROP TO 20
TO 30 PERCENT CAUSING EXTREME FIRE CONDITIONS. WINDS WILL BE OUT
OF THE SOUTH AT 10 TO 20 MPH...BUT WILL SHIFT TO THE NORTHWEST
LATE THIS AFTERNOON.

EXCESSIVE TEMPERATURES...
A HEAT ADVISORY IS IN EFFECT THROUGH THIS EVENING AS HEAT INDICES
OF 105 TO 110 DEGREES CAN BE EXPECTED THIS AFTERNOON INTO EARLY
EVENING ACROSS THE ENTIRE AREA.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

A COLD FRONT WILL MOVE SOUTHEAST ACROSS THE AREA TUESDAY.
SCATTERED THUNDERSTORMS WILL BECOME MORE WIDESPREAD BY TUESDAY
EVENING. SOME OF THE STORMS COULD BECOME SEVERE IN THE LATE
AFTERNOON AND EVENING HOURS...WITH LARGE HAIL AND STRONG WINDS
POSSIBLE ESPECIALLY IN PORTIONS OF NORTHWEST IOWA.  AREAS OF
HEAVY RAIN MAY BE POSSIBLE IN PORTIONS OF SOUTHEAST SOUTH
DAKOTA...SOUTHWEST MINNESOTA...AND NORTHWEST IOWA TUESDAY NIGHT.

IT WILL REMAIN VERY HOT ACROSS NORTHWEST IOWA AND NORTHEAST
NEBRASKA ON TUESDAY WITH AFTERNOON HEAT INDICES NEAR 105 DEGREES.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE POSSIBLE AFTER 7 PM NORTH OF A LINE
FROM MITCHELL SOUTH DAKOTA TO MARSHALL MINNESOTA.

&&

FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT
WWW.CRH.NOAA.GOV/FSD. THIS INCLUDES THE GRAPHICAL HAZARDOUS
WEATHER OUTLOOK.