Alert archive / Puerto Rico / Flash Flood Watches in 2010

Flash Flood Watch 8, NWS JSJ

July 22, 2010

NWS JSJ issued this flash flood watch at Jul 22, 2010, 3:19 PM CDT. It was in force for 11 hr.

The area

The counties it named.

The facts

Issued: Jul 22, 2010, 3:19 PM CDT (20:19 UTC)
Expired: Jul 23, 2010, 2:35 AM CDT
In force: 11 hr
Issued by: NWS JSJ
Flood severity: None

What forecasters said that day

The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS JSJ wrote its last area forecast discussion before this flash flood watch went out at Jul 22, 2:54 PM CDT, 25 minutes earlier.

Area forecast discussion, Jul 22, 2:54 PM CDT, 25 minutes before

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Hazardous weather outlook, Jul 22, 4:51 AM CDT, 10 hours 28 minutes before

HAZARDOUS WEATHER OUTLOOK FOR PUERTO RICO AND THE U.S. VIRGIN
ISLANDS
NATIONAL WEATHER SERVICE SAN JUAN PR
551 AM AST THU JUL 22 2010

AMZ710>745-PRZ001>013-231015-
SAN JUAN AND VICINITY-NORTHEAST-SOUTHEAST-EASTERN INTERIOR-
NORTH CENTRAL-CENTRAL INTERIOR-PONCE AND VICINITY-NORTHWEST-
WESTERN INTERIOR-MAYAGUEZ AND VICINITY-SOUTHWEST-CULEBRA-VIEQUES-
THE NEARSHORE AND OFF SHORE ATLANTIC AND CARIBBEAN COASTAL WATERS-
551 AM AST THU JUL 22 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PUERTO RICO AND THE
ADJACENT COASTAL WATERS.

.DAY ONE...TODAY AND TONIGHT

A VERY MOIST AND UNSTABLE AIR MASS WILL COMBINE WITH LOCAL AND DIURNAL
EFFECTS TO PRODUCE CLOUDINESS...SHOWERS AND A FEW THUNDERSTORMS ACROSS
THE LOCAL ISLANDS. PERIODS OF HEAVY RAINFALL AND URBAN AND SMALL
STREAM FLOODING WILL REMAIN POSSIBLE...WITH THE POTENTIAL FOR FLASH
AND RIVER FLOODING AS WELL AS MUDSLIDES IN AREAS OF STEEP TERRAIN.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

SHOWERS AND ISOLATED THUNDERSTORMS WILL GRADUALLY BECOME SCATTERED
BY FRIDAY. DUE TO ALREADY SATURATED SOILS...ANY ADDITIONAL RAINFALL
WILL LIKELY RESULT IN RAPID RISES IN SMALL STREAMS AND CREEKS AS
WELL AS INCREASE THE POTENTIAL FOR MUDSLIDES IN AREAS OF STEEP
TERRAIN.

.SPOTTER INFORMATION STATEMENT...SPOTTER REPORTS ARE ENCOURAGED.

AMZ715-725-VIZ001-002-231015-
ST. THOMAS ST. JOHN ADJACENT ISLANDS-ST CROIX-
NEARSHORE ATLANTIC AND ADJACENT CARIBBEAN COASTAL WATERS-
551 AM AST THU JUL 22 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE U.S. VIRGIN ISLANDS AND
THE ADJACENT COASTAL WATERS.

.DAY ONE...TODAY AND TONIGHT

A VERY MOIST AND UNSTABLE AIR MASS WILL COMBINE WITH LOCAL AND DIURNAL
EFFECTS TO PRODUCE CLOUDINESS...SHOWERS AND A FEW THUNDERSTORMS ACROSS
THE LOCAL ISLANDS. PERIODS OF HEAVY RAINFALL AND URBAN FLOODING WILL
REMAIN POSSIBLE...WITH THE POTENTIAL FOR GUT FLOODING AS WELL AS
MUDSLIDES IN AREAS OF STEEP TERRAIN.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

SHOWERS AND ISOLATED THUNDERSTORMS WILL GRADUALLY BECOME SCATTERED
BY FRIDAY. URBAN AND GUT FLOODING IS POSSIBLE IN ISOLATED LOCATIONS.

.SPOTTER INFORMATION STATEMENT...SPOTTER REPORTS ARE ENCOURAGED.

In the hours before

Special weather statement, Jul 22, 1:40 PM CDT, 1 hour 39 minutes before

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Special weather statement, Jul 22, 1:43 PM CDT, 1 hour 36 minutes before

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Special weather statement, Jul 22, 2:02 PM CDT, 1 hour 17 minutes before

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Special weather statement, Jul 22, 2:16 PM CDT, 1 hour 3 minutes before

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Special weather statement, Jul 22, 2:26 PM CDT, 53 minutes before

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Special weather statement, Jul 22, 2:40 PM CDT, 39 minutes before

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The office that day

Everything else NWS JSJ issued on the same UTC day.

Issued	Product	Office	Lasted
Jul 21, 9:43 PM CDT	Areal Flood Advisory	JSJ	3 hr
Jul 22, 7:32 AM CDT	Areal Flood Advisory	JSJ	4 hr
Jul 22, 1:08 PM CDT	Areal Flood Advisory	JSJ	3 hr
Jul 22, 1:16 PM CDT	Areal Flood Advisory	JSJ	5 hr
Jul 22, 1:20 PM CDT	Areal Flood Advisory	JSJ	115 min
Jul 22, 3:16 PM CDT	Special Marine Warning	JSJ	119 min
Jul 22, 4:06 PM CDT	Areal Flood Advisory	JSJ	3 hr
Jul 22, 5:19 PM CDT	Areal Flood Advisory	JSJ	3 hr
Jul 22, 6:14 PM CDT	Special Marine Warning	JSJ	2 hr
Jul 22, 5:49 PM CDT	Areal Flood Advisory	JSJ	6 hr

Nearby

Flash Flood Watches in Puerto Rico, 2010 Every flash flood watch in 2010

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.