Headwater Guidance
Issued by NWS San Juan, PR

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128
FOUS72 KALR 070137
FFHSJU
HEADWATER GUIDANCE...SAN JUAN CWA
NATIONAL WEATHER SERVICE
SOUTHEAST RIVER FORECAST CENTER...ATLANTA GA
727 PM EST WED NOV 6 2024

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 20241107 Z DH00/DC202411070027 /DUE/PPHCF/PPTCF/PPQCF
:
:IDENT    1HR   3HR   6HR
:======= ====  ====  ====

AREP4     1.5/  2.0/  2.6
CAGP4     1.4/  1.8/  2.5
CIAP4     1.4/  1.7/  2.3
COAP4     1.7/  2.3/  3.2
COMP4     1.4/  1.8/  2.4
GURP4     1.2/  1.5/  2.1
HORP4     2.0/  2.3/  2.7
MANP4     1.1/  1.4/  1.9
MOCP4     1.2/  1.5/  2.1
RPOP4     1.0/  1.3/  1.9
SEBP4     1.4/  1.7/  2.3
TOAP4     1.2/  1.5/  2.1
VGBP4     1.3/  1.6/  2.2
:
:  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
$$
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