Tropical Weather Discussion
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000
AXPZ20 KNHC 130902
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC SUN JUL 13 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
0900 UTC.

...TROPICAL WAVES...

TROPICAL WAVE AXIS FROM SE MEXICO NEAR 19N92W INTO THE PACIFIC
TO 7N97W MOVING W AT AROUND 20 KT. THERE IS NO SIGNIFICANT
CONVECTION ASSOCIATED WITH THE WAVE.

TROPICAL WAVE AXIS FROM 17N132W TO 11N132W MOVING W AT AROUND 20
KT. ACTIVE CONVECTION ASSOCIATED TO THE WAVE IS FOUND IN THE
VICINITY OF THE SOUTHERN PORTION OF THE WAVE ALONG THE ITCZ.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

MONSOON TROUGH EXTENDS FROM 10N86W TO 5N95W TO 6N101W. ITCZ
EXTENDS FROM 6N101W TO 7N12W THEN RESUMES FROM 11N122W TO
10N135W TO 5N140W. SCATTERED MODERATE TO STRONG CONVECTION
WITHIN 180 NM EITHER SIDE OF AXIS FROM 91N-99W AND WITHIN 150 NM
N OF AXIS FROM 125W-130W AND WITHIN 120 NM N OF AXIS FROM 135W
TO 140W.

...DISCUSSION...

SHARP UPPER LEVEL TROUGH IN THE FAR NW PORTION OF THE DISCUSSION
AREA WITH AXIS FROM 32N135W TO 25N134W TO 18N140W. BROKEN HIGH
CLOUDS ARE WITHIN 250 NM E OF THE TROUGH...OTHERWISE STRONG
SUBSIDENCE WITH DRY AND STABLE AIR AT THE MIDDLE LEVELS IS N OF
18N W OF 120W. AN UPPER LEVEL ANTICYCLONIC CIRCULATION IS
CENTERED NEAR 11N121W WITH A RIDGE EXTENDING N TO 25N126W.
ANOTHER RIDGE EXTENDS FROM THE ANTICYCLONE W TO 10N140W. UPPER
LEVEL DIFFLUENT FLOW ASSOCIATED WITH THE ANTICYCLONE IS
ENHANCING CONVECTION FROM 10N-14N BETWEEN 122W-129W.

GULF TEHUANTEPEC...AN ENHANCED PRESSURE GRADIENT FROM THE SW
GULF OF MEXICO TO THE GULF OF TEHUANTEPEC HAVE INCREASED NLY
WINDS TO 20-30 KT WITH SEAS 8-11 FT. WINDS WILL DECREASE TO 20-
25 KT AND SEAS WILL SUBSIDE TO 8 FT MON THEN TO 20 KT OR LESS
TUE.

$$
DGS


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