News / 

AP-NW--KNHC-NW Tropical Weather Discussion, NW



Estimated read time: 4-5 minutes

This archived news story is available only for your personal, non-commercial use. Information in the story may be outdated or superseded by additional information. Reading or replaying the story in its archived form does not constitute a republication of the story.

714

AXNT20 KNHC 091041

TWDAT

TROPICAL WEATHER DISCUSSION

NWS NATIONAL HURRICANE CENTER MIAMI FL

705 AM EDT SUN MAR 09 2014

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL

AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF

SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE

EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE

IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL

ANALYSIS.

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH

1045 UTC.

...SPECIAL FEATURE...

GALE WARNING AREAS ARE IN EFFECT FOR THE WEST N ATLANTIC

ASSOCIATED WITH A COLD FRONT EXTENDING FROM 30N53W TO 26N60W TO

19N70W. N OF 27N WITHIN 210 NM E OF FRONT SW WINDS 30 TO 35 KT.

SEAS 9 TO 14 FT. N OF 30N W OF FRONT TO 55W W WINDS 30 TO 35 KT.

SEAS 12 TO 15 FT. PLEASE SEE THE HIGH SEAS FORECAST UNDER

AWIPS/WMO HEADERS MIAHSFAT2/FZNT01 KNHC OR THE OFFSHORE FORECAST

UNDER AWIPS/WMO HEADERS MIAOFFNT3/FZNT23 KNHC FOR MORE DETAILS.

SCATTERED SHOWERS ARE WITHIN 120 NM E OF THE FRONT N OF 22N.

...ITCZ/MONSOON TROUGH...

THE MONSOON TROUGH EXTENDS ACROSS AFRICA INTO THE TROPICAL ATLC

NEAR 6N11W AND CONTINUES TO 1N20W. THE ITCZ EXTENDS FROM 1N20W

TO 1N35W TO THE COAST OF BRAZIL NEAR 0S49W. SCATTERED MODERATE

CONVECTION IS FROM 7S-4N BETWEEN 19W-27W AND FROM 7S-1S BETWEEN

2W-9W. SCATTERED MODERATE TO ISOLATED STRONG CONVECTION WITH

EMBEDDED TSTMS IS FROM 1S-4N BETWEEN 4W-12W.

...DISCUSSION...

GULF OF MEXICO...

A BROAD MIDDLE TO UPPER LEVEL RIDGE COVERS THE SOUTHERN U.S. AND

THE GULF OF MEXICO AND PROVIDES SOUTHWESTERLY WIND FLOW ALOFT

WHICH IS ADVECTING MODERATE MOISTURE FROM THE E PAC WATERS INTO

THE BASIN. A SURFACE RIDGE ANCHORED BY A 1022 MB HIGH OVER THE

NE GULF NEAR 30N86W DOMINATES THE CENTRAL AND EASTERN GULF

WATERS AND PROVIDES MAINLY EASTERLY FLOW OF 10-15 KT. A COLD

FRONT HAS ENTERED THE NW GULF AND EXTENDS FROM SW LOUISIANA NEAR

29N93W TO NE MEXICO NEAR 25N97W. LOW LEVEL MOISTURE CONVERGENCE

ALONG AND IN THE VICINITY OF THE FRONT IS SUPPORTING HEAVY

SHOWERS AND ISOLATED TSTMS N OF 24N W OF 94W. EAST OF 90W CLEAR

SKIES AND FAIR WEATHER DOMINATE. THE EASTERLY FLOW ASSOCIATED

WITH THE RIDGE WILL KEEP THIS FRONT OVER THE FAR WESTERN BASIN

WHERE A LOW IS EXPECTED TO DEVELOP EARLY MONDAY. THE LOW AND

ASSOCIATED FRONT IS FORECAST TO DISSIPATE OVER THE NW GULF BY

TUE MORNING. SHOWERS AND TSTMS ASSOCIATED WITH THE FRONT ARE

EXPECTED MAINLY FOR THE NW GULF THROUGH THIS PERIOD.

CARIBBEAN SEA...

NO NOTABLE FEATURES OCCURRING OVER THE CARIBBEAN AS AN EARLIER

FRONTAL BOUNDARY OVER THE WESTERN BASIN DISSIPATED. THE

REMAINDER PORTION OF THE FRONT IS OVER THE SW N ATLC WATERS WITH

ITS TAIL EXTENDING JUST N OF CENTRAL HISPANIOLA. REMNANT

MOISTURE ASSOCIATED WITH THIS COLD FRONT CONTINUE TO SUPPORT LOW

LEVEL CLOUDINESS ACROSS HISPANIOLA WITH POSSIBLE ISOLATED

SHOWERS THIS MORNING. A MOIST AIRMASS IS NOTED IN SSMI TPW

IMAGERY OVER THE NE CARIBBEAN WHICH MAY BE ENHANCING ISOLATED

SHOWERS IN THIS REGION TO INCLUDE PUERTO RICO AND THE VIRGIN

ISLANDS. ALOFT...A BROAD UPPER LEVEL RIDGE COVERS THE BASIN AND

PROVIDES SOUTHWESTERLY WIND. WATER VAPOR IMAGERY INDICATE DRY

AIR SUBSIDENCE OVER THE CARIBBEAN WHICH IS HINDERING THE

DEVELOPMENT OF DEEP CONVECTION. OTHERWISE...TRADES OF 10-15 KT

DOMINATE THE REGION. EXPECT OVER THE NEXT DAY RESIDUAL SHOWERS

TO REMAIN FROM HISPANIOLA TO PUERTO RICO.

HISPANIOLA...

A COLD FRONT OVER THE SW N ATLC WITH TAIL EXTENDING JUST N OF

CENTRAL HISPANIOLA ALONG WITH REMNANT MOISTURE ASSOCIATED WITH

THE PORTION OF THE FRONT THAT ALREADY DISSIPATED IS ENHANCING

LOW LEVEL CLOUDINESS ACROSS THE ISLAND WITH POSSIBLE ISOLATED

SHOWERS. LINGERING MOISTURE ASSOCIATED WITH THE FRONT IS

EXPECTED TO SUPPORT CONTINUED SHOWERS OVER PORTIONS OF

HISPANIOLA OVER THE NEXT 24 HOURS.

ATLANTIC OCEAN...

A FAST-MOVING COLD FRONT EXTENDS FROM 30N52W TO 25N61W TO 19N70W

BEING SUPPORTED BY A DEEP LAYER TROUGH W OF 45W. SCATTERED

SHOWERS ARE WITHIN 120 NM E OF THE FRONT N OF 22N. GALE FORCE

WINDS ARE ON BOTH SIDES OF THE FRONT NEAR OUR NORTH BORDER. SEE

ABOVE. ANOTHER DEEP LAYER TROUGH OVER THE EASTERN ATLC SUPPORTS

A FRONTAL SYSTEM THAT ENTERS THE AREA OF DISCUSSION AS COLD

FRONT ALONG 30N20W TO 25N30W TO 26N40W WHERE IT TRANSITIONS TO A

STATIONARY FRONT TO 30N44W. OTHERWISE...A SURFACE RIDGE ANCHORED

BY A 1021 MB HIGH NEAR 24N42W COVERS THE REMAINDER CENTRAL AND

EASTERN BASIN N OF 12N. THE COLD FRONT OVER THE SW N ATLC WILL

CONTINUE TO DRIFT NE TO EXTENDS ACROSS THE CENTRAL ATLC BY MON

NIGHT.

FOR ADDITIONAL INFORMATION PLEASE VISIT

HTTP://WWW.HURRICANES.GOV/MARINE

$$

NR

Delivered by Weather Underground Inc. Sun Mar 9 2014 6:42AM EDT

Copyright © The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

The Associated Press

    SIGN UP FOR THE KSL.COM NEWSLETTER

    Catch up on the top news and features from KSL.com, sent weekly.
    By subscribing, you acknowledge and agree to KSL.com's Terms of Use and Privacy Policy.

    KSL Weather Forecast