DROUGHT INFORMATION STATEMENT NATIONAL WEATHER SERVICE DODGE CITY KS 140 PM CDT WED JUL 2 2008
...DROUGHT CONDITIONS CONTINUE ACROSS FAR SOUTHWEST KANSAS...
OVERVIEW...
THE LATEST DROUGHT MONITOR ISSUED BY THE U.S. DEPARTMENT OF AGRICULTURE ON JUNE 26 SHOWS PROGRESSIVELY WORSENING DRY CONDITIONS FROM MODERATE IN THE AREAS OF GARDEN CITY AND DODGE CITY TO EXCEPTIONAL AT ELKHART. SOME SPECIFICS INCLUDE BIG BOW 4 WSW, 5.91 INCHES OF RAINFALL SINCE OCTOBER 1, 2007, WHICH IS 64 PERCENT OF NORMAL (9.21 INCHES), AND ELKHART HAVING ONLY 3.49 INCHES OF RAINFALL SINCE OCTOBER 1, 30 PERCENT OF THE NORMAL OF 11.65 INCHES. FOR OTHER SELECTED LOCATIONS SINCE OCTOBER 1: HUGOTON 4.97 INCHES, 41 PERCENT OF NORMAL (12.06 INCHES); LAKIN 4.67 INCHES, 40 PERCENT OF NORMAL (11.59 INCHES); RICHFIELD 10 WSW 3.64 INCHES, 36 PERCENT OF NORMAL (10.17 INCHES) AND ULYSSES 3NE 4.32 INCHES, 39 PERCENT OF NORMAL (10.97 INCHES).
FOR DODGE CITY, THERE HAS BEEN 11.49 INCHES OF RAINFALL SINCE OCTOBER 1, WHICH IS 78 PERCENT OF NORMAL. HOWEVER, SINCE JUNE 2001 (85 MONTHS) THE RAINFALL DEFICIT IS 22.88 INCHES (ROUGHLY THE YEARLY AVERAGE), AND IS IN THE TOP 20 PERCENT OF THE DRIEST 85-MONTH PERIODS ON RECORD. THE DRIEST SUCH PERIOD WAS OCTOBER 1932-NOVEMBER 1939 WHEN THERE WAS A DEFICIT OF 55.4 INCHES OR 65 PERCENT OF NORMAL.
THE JET STREAM PATTERN RESPONSIBLE FOR VERY HEAVY TO EXCEPTIONAL FLOODING RAINFALL FOR AREAS SUCH AS EASTERN KANSAS AND MISSOURI INTO PARTICULARLY HARD HIT IOWA HAS ALSO CONTRIBUTED TO THE INTENSE DROUGHT CONDITIONS OVER EXTREME SOUTHWEST KANSAS (EXTENDING INTO THE OKLAHOMA AND NORTHERN TEXAS PANHANDLES). THIS WEATHER PATTERN HAS WEAKENED DURING THE LAST FEW WEEKS. WHILE MORE "TYPICAL" SUMMERTIME THUNDERSTORM ACTIVITY APPEARS PROBABLE, NO SIGNIFICANT RELIEF IS LIKELY FROM THE DROUGHT THROUGH THIS SUMMER. OFFICIAL FORECASTS FROM THE CLIMATE PREDICTION CENTER (CPC) SUGGEST SOME IMPROVEMENT.
HYDROLOGIC IMPACTS...
CURRENTLY THERE IS NO WATER FLOWING IN THE STREAM AND CREEK BEDS FOR THE LOCATIONS IMPACTED BY THIS DROUGHT. FLOWS ALONG THE ARKANSAS RIVER IN EXTREME WESTERN KANSAS ARE A RESULT OF RELEASES FROM JOHN MARTIN RESERVOIR FOR IRRIGATION PURPOSES.
FIRE DANGER IMPACTS...
RAINFALL THIS SPRING HAS BEEN INSUFFICIENT TO SUPPORT MUCH GREEN UP OF VEGETATION IN STANTON, MORTON AND STEVENS COUNTIES, AND CURED VEGETATION WILL SUPPORT RAPID SPREAD OF WILDFIRES. THE POTENTIAL FOR WILDFIRES WILL BE EXTREME WHENEVER STRONG WINDS AND LOW RELATIVE HUMIDITIES DEVELOP. IN GRANT, HASKELL AND SEWARD COUNTIES, THERE HAS BEEN ENOUGH RAINFALL TO SUPPORT ABOUT 80% GREEN UP. CURED GRASSES WILL CARRY FIRE EFFECTIVELY, AND RAPIDLY SPREADING WILDFIRES WILL BE POSSIBLE WHENEVER ATMOSPHERIC CONDITIONS ARE FAVORABLE. A COUNTYWIDE BURN BAN IS IN EFFECT IN MORTON COUNTY. LITTLE IMPROVEMENT IS EXPECTED UNLESS WIDESPREAD RAINFALL OCCURS.
AGRICULTURAL IMPACTS...
SOIL MOISTURE DEFICITS ARE VERY HIGH, GREATER THAN 4 INCHES OF RAINFALL FOR MORTON AND STEVENS COUNTIES PER CPC THROUGH JULY 1. YIELDS FROM DRY LAND CROPS HAVE BEEN SIGNIFICANTLY IMPACTED. THERE HAS ALSO BEEN CONSIDERABLE WIND EROSION PARTICULARLY FOR LOCATIONS IN STEVENS COUNTY.
OUTLOOK...
SCATTERED THUNDERSTORMS ARE EXPECTED TONIGHT THROUGH FRIDAY FOR THE DROUGHT IMPACTED AREAS. HOWEVER, FORECASTS FROM CPC THROUGH WEEK-2 TILT THE ODDS TOWARD ABOVE NORMAL TEMPERATURES AND BELOW NORMAL RAINFALL. THESE SAME OFFICIAL FORECASTS SHOW NO PROBABILITY SHIFTS OF TEMPERATURES AND PRECIPITATION THROUGH AUGUST.
BERRY/RUTHI/HUTTON/SLOAN