Alert archive / Puerto Rico / Special Marine Warnings in 2008

Special Marine Warning 13, NWS JSJ

April 27, 2008

NWS JSJ issued this special marine warning at Apr 27, 2008, 4:56 PM CDT. It was in force for 2 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
Apr 27, 2008, 4:56 PM CDT (21:56 UTC)
Expired
Apr 27, 2008, 7:00 PM CDT
In force
2 hr
Issued by
NWS JSJ
Area
Storm-based polygon

What forecasters said that day

The local office's own words before this special marine warning 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 special marine warning went out at Apr 27, 2:30 PM CDT, 2 hours 26 minutes earlier.

Area forecast discussion, Apr 27, 2:30 PM CDT, 2 hours 26 minutes before
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Hazardous weather outlook, Apr 27, 6:16 AM CDT, 10 hours 40 minutes before
HAZARDOUS WEATHER OUTLOOK FOR PUERTO RICO AND THE U.S. VIRGIN
ISLANDS
NATIONAL WEATHER SERVICE SAN JUAN PR
716 AM AST SUN APR 27 2008

AMZ710>750-PRZ001>013-281130-
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-
716 AM AST SUN APR 27 2008

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

.DAY ONE...TODAY AND TONIGHT

ABUNDANT LOW LEVEL MOISTURE ASSOCIATED TO A LOW LEVEL TROUGH
MOVING ACROSS THE FORECAST AREA THIS MORNING...AND EXPECTED TO
MOVE WESTWARD THROUGH THIS EVENING...WILL COMBINE WITH DIURNAL
HEATING AND LOCAL ISLAND EFFECTS TO PRODUCE MODERATE TO HEAVY
SHOWER ACTIVITY AND THUNDERSTORMS ACROSS MOST OF PUERTO RICO THIS
AFTERNOON. HOWEVER...WE ARE ANTICIPATING THAT THE HEAVIEST RAINFALL
MAY OCCUR OVER THE WESTERN HALF OF PUERTO RICO AND INTERIOR
SECTIONS OF THE ISLAND. FOR THE NEXT 12 HOURS OR SO...WE ARE
ESTIMATING ONE TO THREE INCHES OF RAIN OVER THESE AREAS.
HAVING SAID THAT...URBAN AND STREAM FLOOD STATEMENTS WILL BE
NEEDED AS SHOWERS AND THUNDERSTORMS BEGIN TO DEVELOP ACROSS LAND
AREAS LATER THIS AFTERNOON. THERE IS SLIGHT TO MODERATE CHANCE
FOR MUDSLIDES IN THE STEEP MOUNTAINOUS AREAS SUCH AS THOSE ACROSS
THE CORDILLERA CENTRAL AND EL YUNQUE.

A MODERATE EAST NORTHEAST WIND FLOW WILL PREVAIL THROUGH LATE THIS
AFTERNOON. HOWEVER...MARINERS SHOULD EXPECT PERIODS OF LOCALLY
HEAVY SHOWERS AND THUNDERSTORMS MAINLY OVER THE OFFSHORE ATLANTIC
AND CARIBBEAN WATERS THROUGH THE EVENING. THIS WILL CONTINUE TO
MAKE HAZARDOUS MARINE CONDITIONS ACROSS THE REGIONAL WATERS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS REQUIRED

AMZ720-730-VIZ001-002-281130-
ST. THOMAS ST. JOHN ADJACENT ISLANDS-ST CROIX-
NEARSHORE ATLANTIC AND ADJACENT CARIBBEAN COASTAL WATERS-
716 AM AST SUN APR 27 2008

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

.DAY ONE...TODAY AND TONIGHT

ABUNDANT LOW LEVEL MOISTURE ASSOCIATED TO A LOW LEVEL TROUGH
MOVING ACROSS THE FORECAST AREA THIS MORNING...AND EXPECTED TO
MOVE WESTWARD THROUGH THIS EVENING...WILL COMBINE WITH DIURNAL
HEATING AND LOCAL ISLAND EFFECTS TO PRODUCE MODERATE TO HEAVY
SHOWER ACTIVITY AND THUNDERSTORMS ACROSS MOST OF THE U.S. VIRGIN
ISLANDS THIS AFTERNOON. HOWEVER...WE ARE ANTICIPATING THAT THE
HEAVIEST RAINFALL MAY OCCUR OVER THE WESTERN HALF SECTORS OF ST
CROIX AND ST THOMAS. WE ARE ESTIMATING ONE TO TWO INCHES OF
RAINFALL WITHIN THE NEXT 12 HOURS OR SO. HAVING SAID THAT...URBAN
AND STREAM FLOOD STATEMENTS WILL BE NEEDED AS SHOWERS AND
THUNDERSTORMS BEGIN TO DEVELOP ACROSS LAND AREAS LATER THIS
AFTERNOON. THERE IS SLIGHT TO MODERATE CHANCE FOR MUDSLIDES IN THE
STEEP MOUNTAINOUS AREAS OF ST THOMAS AND ST CROIX. STAY TUNED FOR
ANY UPDATES DURING THE DAY THESE WEATHER CONDITIONS BEGIN TO
AFFECT THE ISLANDS AND COASTAL WATERS.

A MODERATE EAST NORTHEAST WIND FLOW WILL PREVAIL THROUGH LATE THIS
AFTERNOON. HOWEVER...MARINERS SHOULD EXPECT PERIODS OF LOCALLY
HEAVY SHOWERS AND THUNDERSTORMS MAINLY OVER THE OFFSHORE ATLANTIC
AND CARIBBEAN WATERS THROUGH THE EVENING. THIS WILL CONTINUE TO
MAKE HAZARDOUS MARINE CONDITIONS ACROSS THE REGIONAL WATERS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS REQUIRED

In the hours before

Special weather statement, Apr 27, 2:33 PM CDT, 2 hours 23 minutes before
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Special weather statement, Apr 27, 2:52 PM CDT, 2 hours 4 minutes before
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Local storm report, Apr 27, 3:43 PM CDT, 1 hour 13 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN JUAN PR
443 PM AST SUN APR 27 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0439 PM     TSTM WND DMG     BARRANQUITAS            18.19N 66.31W
04/27/2008                   BARRANQUITAS       PR   EMERGENCY MNGR

            PREMA EMERGENCY MANAGEMENT OFFICIALS REPORTED MINOR WIND
            DAMAGE FROM THUNDERSTORM WIND GUSTS IN BARRIO
            BARRANCAS...IN BARRANQUITAS.

&&

ABTAHI
Special weather statement, Apr 27, 3:51 PM CDT, 1 hour 5 minutes before
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Special weather statement, Apr 27, 4:09 PM CDT, 47 minutes before
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Local storm report, Apr 27, 4:29 PM CDT, 27 minutes before
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The office that day

Everything else NWS JSJ issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 27, 9:42 AM CDTFlash Flood WatchJSJ11 hr
Apr 27, 4:15 PM CDTFlash Flood WarningJSJ2 hr
Apr 27, 4:24 PM CDTFlash Flood WarningJSJ2 hr
Apr 27, 4:24 PM CDTFlash Flood WarningJSJ2 hr
Apr 27, 4:36 PM CDTFlash Flood WarningJSJ114 min
Apr 27, 5:53 PM CDTFlash Flood WarningJSJ3 hr
Apr 27, 6:09 PM CDTFlash Flood WarningJSJ2 hr
Apr 27, 6:25 PM CDTFlash Flood WarningJSJ2 hr
Apr 27, 6:35 PM CDTFlash Flood WarningJSJ9 hr
Apr 27, 6:42 PM CDTSpecial Marine WarningJSJ2 hr

Nearby

Special Marine Warnings in Puerto Rico, 2008Every special marine warning in 2008

Sources

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