Alert archive / Guam / Flash Flood Warnings in 2004
Flash Flood Warning 9, NWS Guam
NWS Guam issued this flash flood warning at Aug 23, 2004, 11:00 PM CDT. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 23, 2004, 11:00 PM CDT (04:00 UTC)
- Expired
- Aug 24, 2004, 3:00 AM CDT
- In force
- 4 hr
- Issued by
- NWS Guam
- Area
- Whole counties
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGMY50 PGUM 240416 FFWMY GUZ001-002-003-004-240800- BULLETIN - IMMEDIATE BROADCAST REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TIYAN GU 2 PM LST TUE AUG 24 2004 THE NATIONAL WEATHER SERVICE IN TIYAN GUAM HAS ISSUED A * FLASH FLOOD WARNING FOR... THE MARIANA ISLANDS OF GUAM...ROTA...TINIAN AND SAIPAN. * UNTIL 600 PM LST TUESDAY NIGHT. * AT 2 PM LST...SATELLITE AND DOPPLER WEATHER RADAR IMAGERY INDICATE SHOWERS AND THUNDERSTORMS ASSOCIATED WITH WIND FLOW CONVERGENCE INTO SUPER TYPHOON CHABA MOVING ACROSS THE MARIANA ISLANDS. THESE SHOWERS AND THUNDERSTORMS WILL PERSIST FOR A FEW MORE HOURS. * THESE SHOWERS HAVE ALREADY BROUGHT NEARLY 8 INCHES OF RAIN TO ROTA AND OVER TWO INCHES TO GUAM AND OVER 5 INCHES TO SAIPAN. TWO MORE INCHES OF RAIN OR MORE ARE POSSIBLE BEFORE THIS RAIN EVENT ENDS * EXPECT FLASH FLOODING TO OCCUR IN VALLEYS...AT THE BASE OF MOUNTAINS...ALONG RIVERS AND STREAMS...ALONG ROADWAYS AND IN LOW-LYING AREAS. IF YOU LIVE IN A LOW-LYING AREA...AT THE BASE OF MOUNTAIN VALLEYS... OR NEAR STREAMS AND RIVERS...GO TO HIGHER GROUND AT ONCE. AVOID DRIVING. NEVER TRY TO CROSS A FLOODED ROAD. $$ ZIOBRO
2 follow-up statements
000 WGMY70 PGUM 240529 CCA FFSMY GUZ001-002-003-004-240600- BULLETIN - IMMEDIATE BROADCAST REQUESTED FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TIYAN GU 3 PM LST TUE AUG 24 2004 ...FLASH FLOOD WARNING REMAINS IN EFFECT FOR GUAM...ROTA...TINIAN AND SAIPAN UNTIL 6 PM... A REPORT FROM HAGATNA INDICATE THAT THE HAGATNA RIVER AT THE BRIDGE NEAR THE BANK OF GUAM BUILDING HAS RISEN. THE RAINFALL APPEARS TO HAVE TAPERED OFF ACROSS GUAM...HOWEVER RUNOFF INTO STREAMS AND RIVERS MAY CAUSE A FURTHER RISE AND FLOODING IN CERTAIN AREAS. HERE ARE RAINFALL TOTALS FROM MIDNIGHT TO 3 PM TUESDAY... GUAM INTL AIRPORT/TIYAN (MIDNIGHT TO 10AM)...... 0.92 INCHES APRA HARBOR (AUTOMATED GAUGE)................... 2.37 INCHES INARAJAN (AUTOMATED GAUGE)...................... 2.68 INCHES MANGILAO (AUTOMATED GAUGE)...................... 2.32 INCHES MERIZO (AUTOMATED GAUGE)........................ 2.24 INCHES SINAJANA (SPOTTER MIDNIGHT UNTIL 8AM)............ 0.97 INCHES ROTA INTL AIRPORT/SINAPALU...................... 8.19 INCHES SAIPAN INTERNATIONAL AIRPORT (MIDNIGHT TO 10AM).. 5.34 INCHES $$ ZIOBRO
000 WGMY70 PGUM 240612 FFSMY GUZ001-002-003-004-240800- BULLETIN - IMMEDIATE BROADCAST REQUESTED FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TIYAN GU 4 PM LST TUE AUG 24 2004 ...FLASH FLOOD WARNING REMAINS IN EFFECT FOR GUAM...ROTA...TINIAN AND SAIPAN UNTIL 6 PM... HEAVY RAIN APPEARS TO HAVE TAPERED OFF ACROSS GUAM. HOWEVER...RUNOFF INTO STREAMS AND RIVERS MAY CAUSE FURTHER RISES AND FLOODING IN SOME AREAS. HERE ARE RAINFALL TOTALS FROM MIDNIGHT TO 4 PM TODAY... GUAM INTL AIRPORT/TIYAN......................... 3.62 INCHES APRA HARBOR (AUTOMATED GAUGE)................... 2.37 INCHES INARAJAN (AUTOMATED GAUGE)...................... 2.68 INCHES MANGILAO (AUTOMATED GAUGE)...................... 2.32 INCHES MERIZO (AUTOMATED GAUGE)........................ 2.24 INCHES TOTO (COOPERATIVE OBSERVER)..................... 3.89 INCHES ROTA INTL AIRPORT/SINAPALU (AUTOMATED GAUGE)..... 8.19 INCHES SAIPAN INTERNATIONAL AIRPORT (MIDNIGHT TO 4PM)... 6.66 INCHES $$ ZIOBRO
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Guam wrote its last area forecast discussion before this flash flood warning went out at Aug 23, 10:06 PM CDT, 54 minutes earlier.
Area forecast discussion, Aug 23, 10:06 PM CDT, 54 minutes before
AREA SYNOPTIC DISCUSSION NATIONAL WEATHER SERVICE TIYAN GU 1 PM GUAM LST TUE AUG 24 2004 WESTERN NORTH PACIFIC BETWEEN EQUATOR AND 25N FROM 130E TO 180. SUPER TYPHOON CHABA IS CENTERED NORTHWEST OF THE MARIANAS NEAR 18N140E AND IS MOVING NORTHWEST AT 13 MPH WITH MAXIMUM SUSTAINED WINDS OF 175 MPH. HEAVY RAIN AND THUNDERSTORMS EXTEND OUTWARD UP TO 120 MILES FROM THE CENTER. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS EXTEND FURTHER OUT TO AN AREA BETWEEN 12N AND 21N FROM 135E TO 148E. SEE JOINT TYPHOON WARNING CENTER BULLETIN WTPN32 PGTW FOR FURTHER DETAILS. A MONSOON TROUGH EXTENDS FROM TYPHOON AERE...JUST EAST OF TAIWAN ...THROUGH SUPER TYPHOON CHABA...NORTHWEST OF THE MARIANAS...TO A WEAK CIRCULATION NEAR 11N159E. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS ASSOCIATED WITH THE WEAK CIRCULATION EXTEND NORTH OF CHUUK...POHNPEI AND KOSRAE BETWEEN 9N AND 16N FROM 152E TO 163E. TRADE-WIND CONVERGENCE INTO THE END OF THE MONSOON TROUGH IS PRODUCING SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS NORTH OF THE MARSHALL ISLANDS WITHIN 100 MILES EITHER SIDE OF A LINE FROM 17N165E TO 10N180.
Nearby
Flash Flood Warnings in Guam, 2004Every flash flood warning in 2004
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.