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HYDROLOGIC OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
1213 PM CDT THU APR 22 2004
...WETTER THAN NORMAL WEATHER PATTERN IMPROVES CONDITIONS OVER WEST
CENTRAL TEXAS...
SYNOPSIS...
CONDITIONS ACROSS WEST CENTRAL TEXAS CONTINUE TO IMPROVE DUE TO A
WETTER THAN NORMAL WEATHER PATTERN THAT THE AREA HAS EXPERIENCED
SINCE JANUARY. RAIN IS FORECAST OVER WEST CENTRAL TEXAS AGAIN THIS
WEEKEND...BEGINNING LATE ON APRIL 23...AS A COLD FRONT MOVES THROUGH
THE REGION. THE POTENTIAL FOR HEAVY RAIN COULD BE IN STORE FOR
FRIDAY NIGHT AS THE FRONT INTERACTS WITH THE DRYLINE. ON
SUNDAY...APRIL 25...SURFACE HIGH PRESSURE BUILDS ACROSS THE AREA
BRINGING DRY BUT COOL CONDITIONS.
THE U.S. DROUGHT MONITOR...ISSUED THROUGH THE NATIONAL DROUGHT
MITIGATION CENTER ON APRIL 20...CONTINUES TO REFLECT THE GOOD YEAR TO
DATE MOISTURE RECEIVED OVER WEST CENTRAL TEXAS AND INDICATES THAT THE
AREA IS EXPERIENCING NEAR NORMAL CONDITIONS.
FROM APRIL 1 THROUGH APRIL 21...THE SAN ANGELO REGIONAL AIRPORT
RECEIVED 1.78 INCHES OF RAIN. THE AVERAGE MONTHLY RAINFALL FOR SAN
ANGELO IN APRIL IS 1.60 INCHES. YEAR TO DATE...SAN ANGELO HAS
RECEIVED 6.57 INCHES OF RAIN.
FROM APRIL 1 THROUGH APRIL 21...THE ABILENE REGIONAL AIRPORT RECEIVED
1.79 INCHES OF RAIN. THE AVERAGE MONTHLY RAINFALL FOR ABILENE IN
APRIL IS 1.67 INCHES. YEAR TO DATE...ABILENE HAS RECEIVED 7.63
INCHES OF RAIN.
HYDROLOGIC IMPACTS...
WHILE THE RAINS HAVE BEEN BENEFICIAL...THEY HAVE PRODUCED ONLY MINOR
AMOUNTS OF RUNOFF INTO OUR RIVERS AND RESERVOIRS. THE USGS
WATERWATCH INDICATES THAT PORTIONS OF THE CLEAR FORK OF THE BRAZOS
RIVER...HUBBARD CREEK...CALIFORNIA CREEK AND MIDDLE CONCHO RIVER ARE
REPORTING BELOW NORMAL FLOWS. MOST OF THE RESERVOIRS LOCATED ACROSS
WEST CENTRAL TEXAS ARE WELL BELOW THEIR CONSERVATION CAPACITY. THE
WATER LEVEL IN TWIN BUTTES RESERVOIR REMAINS BELOW THE USGS DATA
COLLECTION EQUIPMENT THAT PROVIDES READINGS OF THE POOL ELEVATION.
RESERVOIR CONDITIONS AS OF APRIL 21...
CURRENT CONSERVATION CURRENT %
ELEVATION CAPACITY CAPACITY CONSERVATION
RESERVOIR (FT) (AC-FT) (AC-FT) CAPACITY
FORT PHANTOM HILL 1622.33 70036 29330 42
LAKE STAMFORD 1412.22 51570 31780 62
HUBBARD CREEK 1165.12 318070 121140 38
HORDS CREEK LAKE 1884.72 8800 2790 32
LAKE BROWNWOOD 1424.68 131428 129360 98
E.V. SPENCE 1840.44 517272 43040 8
TWIN BUTTES BELOW EQUIPMENT
O.C. FISHER 1858.15 119200 2810 2
O.H. IVIE 1525.45 554340 191740 35
FIRE DANGER IMPACTS...
CURRENTLY ACROSS WEST CENTRAL TEXAS...THERE ARE NO COUNTIES THAT HAVE
AN ESTABLISHED COUNTY WIDE BURN BAN. TO ASSESS FIRE POTENTIAL...THE
TEXAS FOREST SERVICE USES THE KEETCH-BYRAM DROUGHT INDEX...WHICH IS A
NUMERICAL INDEX CALCULATED DAILY FOR EACH COUNTY. EACH NUMBER IS AN
ESTIMATE OF THE AMOUNT OF PRECIPITATION...IN HUNDREDTHS OF AN
INCH...NEEDED TO BRING THE SOIL BACK TO SATURATION. THE INDEX RANGES
FROM 0 TO 800...WITH 0 REPRESENTING A SATURATED SOIL AND 800 A
COMPLETELY DRY SOIL. THE KEETCH-BYRAM DROUGHT INDEX ISSUED ON APRIL
21 SHOWS THAT THE FIRE POTENTIAL ACROSS WEST CENTRAL TEXAS IS LOW AND
FALLS WITHIN THE 0 TO 200 RANGE.
AGRICULTURAL IMPACTS...
THE CROP MOISTURE INDEX MONITORS SHORT TERM MOISTURE CONDITIONS
ACROSS MAJOR CROP PRODUCING REGIONS. THE INDEX IS NOT USED FOR
MONITORING EXTENDED DROUGHT CONDITIONS. THE CROP MOISTURE INDEX
ISSUED BY THE TEXAS CLIMATIC DIVISIONS ON APRIL 10 INDICATES THAT
SHORT TERM MOISTURE CONDITIONS ARE ADEQUATE TO VERY WET OVER WEST
CENTRAL TEXAS.
OUTLOOK...
THE OUTLOOK THROUGH JULY 2004...ISSUED BY THE CLIMATE PREDICTION
CENTER...SUGGESTS THAT WEST CENTRAL TEXAS WILL EXPERIENCE ABOVE
NORMAL TEMPERATURES. THE PRECIPITATION OUTLOOK THROUGH JULY 2004
SUGGESTS THAT OUR AREA WILL EXPERIENCE NEAR NORMAL PRECIPITATION.
KEEP UP TO DATE ON THE LATEST DROUGHT INFORMATION AT THE FOLLOWING
WEBSITES...
WWW.SRH.WEATHER.GOV/SSD/HTML/DROUGHT.HTM
WWW.DROUGHT.NOAA.GOV
WWW.TEXASWATERINFO.NET/MONITORING/METEOROLOGICAL/DROUGHT/INDICES.HTM