PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE RAPID CITY SD
1000 AM MDT FRI AUG 11 2006

DROUGHT CONDITIONS CONTINUE ACROSS WESTERN SOUTH DAKOTA AND NORTHEASTERN WYOMING

AS OF AUGUST 11th...EXCEPTIONAL DROUGHT CONDITIONS HAVE DEVELOPED ACROSS ZIEBACH...HAAKON...JACKSON AND MELLETTE COUNTIES. EXTREME DROUGHT CONDITIONS INTENSIFIED OVER HARDING...PERKINS...BUTTE...MEADE...EASTERN PENNINGTON ...EASTERN CUSTER...SHANNON...BENNETT...TODD AND TRIPP COUNTIES. DROUGHT CONDITIONS HAVE INTENSIFIED TO SEVERE DROUGHT OVER THE REST OF THE RAPID CITY FORECAST AREA. THIS INCLUDES CAMPBELL...CROOK AND WESTON COUNTIES IN NORTHEAST WYOMING AND LAWRENCE...FALL RIVER...WESTERN PENNINGTON AND WESTERN CUSTER COUNTIES IN WESTERN SOUTH DAKOTA. ALTHOUGH SOME LOCATIONS HAVE RECEIVED SIGNIFICANT RAINFALL IN AUGUST DUE TO ISOLATED THUNDERSTORMS...OVERALL DROUGHT CONDITIONS CAN ONLY IMPROVE WHEN SUBSTAINTIAL WIDESPREAD PRECIPITATION IS RECEIVED.
 
TEMPERATURES IN JULY WERE 4 TO 8 DEGREES ABOVE NORMAL ACROSS NORTHEAST WYOMING AND WESTERN SOUTH DAKOTA. MOST LOCATIONS EXCEEDED THE CENTURY MARK NUMEROUS TIMES DURING THE MONTH. JULY 2006 WAS THE SECOND WARMEST JULY ON RECORD ...WITH 1936 BEING THE HOTTEST.

PRECIPITATION DURING JULY WAS MUCH BELOW NORMAL. MOST LOCATIONS ONLY RECEIVED 20 TO 40 PERCENT OF THEIR NORMAL PRECIPITATION FOR THE MONTH. IT WAS THE DRIEST JULY IN HISTORY FOR NEWELL...KADOKA...CEDAR BUTTE...HARRINGTON AND 14 MILES SOUTH OF MISSION. IT WAS THE SECOND DRIEST JULY FOR INTERIOR...MISSION AND HILL CITY.

RESERVOIR DATA

RESERVOIRS AROUND THE REGION REMAIN WELL BELOW CAPACITY. THE TABLE BELOW SHOWS RESERVOIR PERCENT OF NORMAL CAPACITY AND CHANGE IN ELEVATION OVER THE PAST 30 DAYS AS CALCULATED BY THE BUREAU OF RECLAMATION.

RESERVOIR       PERCENT OF NORMAL   ELEVATION CHANGE
.......................................................................................................................
ANGOSTURA                         35%                                 -3.5 FT
BELLE FOURCHE                26%                                 -8.5 FT
DEERFIELD                           78%                                 -0.5 FT
KEYHOLE                               32%                                  2.0 FT
PACTOLA                                61%                                -6.5 FT
SHADEHILL                           70%                                 -5.0 FT


OUTLOOK THROUGH SEPTEMBER

DROUGHT CONDITIONS ARE EXPECTED TO PERSIST ACROSS WESTERN SOUTH DAKOTA AND NORTHEASTERN WYOMING THROUGH SEPTEMBER.

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