


Headwater Guidance
Issued by NWS Charleston, SC
Issued by NWS Charleston, SC
191 FOUS72 KALR 011335 FFHCHS HEADWATER GUIDANCE...CHARLESTON CWA NATIONAL WEATHER SERVICE SOUTHEAST RIVER FORECAST CENTER...ATLANTA GA 933 AM EDT FRI AUG 1 2025 INCHES OF RAINFALL FOR SPECIFIED DURATIONS REQUIRED TO PRODUCE FLASH FLOODING IN HEADWATERS. LOWER AMOUNTS MAY CAUSE FLASH FLOODING IN URBAN OR MOUNTAINOUS AREAS. .B ALR 20250801 Z DH12/DC202508011333 /DUE/PPHCF/PPTCF/PPQCF/PPKCF/PPDCF : :IDENT 1HR 3HR 6HR 12HR 24HR :======= ==== ==== ==== ==== ==== MDVG1 3.0/ 4.9/ 5.6/ 6.8/ 8.0 SUMS1 3.0/ 5.0/ 6.0/ 7.0/ 8.0 : : TO USE HEADWATER ADVISORY TABLES TAKE THE THREE HOUR VALUE ABOVE FOR : THAT LOCATION AND USE THE FOLLOWING RELATIONS... : TABLE 1 / 0 TO 2.4 IN TABLE 4 / 4.1 TO 4.5 IN : 2 / 2.5 TO 3.3 IN 5 / 4.6 TO 4.9 IN : 3 / 3.4 TO 4.0 IN 6 / 5.0 IN : .END $$ S.E.R.F.C. 770-486-0028 or 770-282-2112 Regular Hours 6am-10pm Eastern Time After Hours Please Follow Callback Instructions