Headwater Guidance
Issued by NWS San Juan, PR

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978
FOUS72 KALR 120137
FFHSJU
HEADWATER GUIDANCE...SAN JUAN CWA
NATIONAL WEATHER SERVICE
SOUTHEAST RIVER FORECAST CENTER...ATLANTA GA
936 PM EDT SAT MAY 11 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 20240512 Z DH00/DC202405120136 /DUE/PPHCF/PPTCF/PPQCF
:
:IDENT    1HR   3HR   6HR
:======= ====  ====  ====

AREP4     1.5/  1.9/  2.6
CAGP4     1.7/  2.3/  3.2
CIAP4     1.5/  1.8/  2.4
COAP4     1.8/  2.3/  3.2
COMP4     1.5/  1.8/  2.3
GURP4     1.6/  2.0/  2.8
HORP4     2.2/  2.9/  3.6
MANP4     1.1/  1.4/  1.9
MOCP4     1.3/  1.9/  2.7
RPOP4     1.2/  1.5/  2.0
SEBP4     1.4/  1.8/  2.3
TOAP4     1.4/  1.8/  2.3
VGBP4     1.2/  1.5/  2.1
:
:  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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