TROPICAL DEPRESSION THREE FORECAST/ADVISORY NUMBER 1
NWS NATIONAL HURRICANE CENTER MIAMI FL AL032020
2100 UTC MON JUN 01 2020
CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY...
THE GOVERNMENT OF MEXICO HAS ISSUED A TROPICAL STORM WARNING FROM
CAMPECHE WESTWARD TO PUERTO DE VERACRUZ
SUMMARY OF WATCHES AND WARNINGS IN EFFECT...
A TROPICAL STORM WARNING IS IN EFFECT FOR...
* CAMPECHE TO PUERTO DE VERACRUZ
A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE
EXPECTED SOMEWHERE WITHIN THE WARNING AREA WITHIN 36 HOURS.
TROPICAL DEPRESSION CENTER LOCATED NEAR 19.6N 91.2W AT 01/2100Z
POSITION ACCURATE WITHIN 25 NM
PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 290 DEGREES AT 6 KT
ESTIMATED MINIMUM CENTRAL PRESSURE 1007 MB
MAX SUSTAINED WINDS 25 KT WITH GUSTS TO 35 KT.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.
REPEAT...CENTER LOCATED NEAR 19.6N 91.2W AT 01/2100Z
AT 01/1800Z CENTER WAS LOCATED NEAR 19.5N 90.9W
FORECAST VALID 02/0600Z 19.8N 92.3W
MAX WIND 30 KT...GUSTS 40 KT.
FORECAST VALID 02/1800Z 19.5N 92.8W
MAX WIND 35 KT...GUSTS 45 KT.
34 KT... 40NE 40SE 40SW 40NW.
FORECAST VALID 03/0600Z 19.2N 93.0W
MAX WIND 40 KT...GUSTS 50 KT.
34 KT... 50NE 50SE 50SW 50NW.
FORECAST VALID 03/1800Z 18.8N 93.2W
MAX WIND 45 KT...GUSTS 55 KT.
34 KT... 60NE 50SE 50SW 60NW.
FORECAST VALID 04/0600Z 18.8N 93.2W
MAX WIND 45 KT...GUSTS 55 KT.
34 KT... 60NE 50SE 50SW 60NW.
FORECAST VALID 04/1800Z 18.8N 93.2W
MAX WIND 45 KT...GUSTS 55 KT.
34 KT... 60NE 50SE 50SW 60NW.
EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM
ON DAY 4 AND 175 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY
OUTLOOK VALID 05/1800Z 19.0N 92.8W
MAX WIND 45 KT...GUSTS 55 KT.
OUTLOOK VALID 06/1800Z 23.0N 91.0W
MAX WIND 50 KT...GUSTS 60 KT.
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 19.6N 91.2W
INTERMEDIATE PUBLIC ADVISORY...WTNT33 KNHC/MIATCPAT3...AT 02/0000Z
NEXT ADVISORY AT 02/0300Z
$$
FORECASTER BROWN
BULLETIN
Tropical Depression Three Advisory Number 1
NWS National Hurricane Center Miami FL AL032020
400 PM CDT Mon Jun 01 2020
...TROPICAL DEPRESSION FORMS IN THE BAY OF CAMPECHE...
...EXPECTED TO STRENGTHEN AND BRING HEAVY RAINFALL TO PORTIONS OF
MEXICO...
SUMMARY OF 400 PM CDT...2100 UTC...INFORMATION
----------------------------------------------
LOCATION...19.6N 91.2W
ABOUT 50 MI...80 KM WSW OF CAMPECHE MEXICO
ABOUT 230 MI...370 KM ENE OF COATZACOALCOS MEXICO
MAXIMUM SUSTAINED WINDS...30 MPH...45 KM/H
PRESENT MOVEMENT...WNW OR 290 DEGREES AT 7 MPH...11 KM/H
MINIMUM CENTRAL PRESSURE...1007 MB...29.74 INCHES
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:
The government of Mexico has issued a Tropical Storm Warning from
Campeche westward to Puerto de Veracruz
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Tropical Storm Warning is in effect for...
* Campeche to Puerto de Veracruz
A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area within 36 hours.
For storm information specific to your area, please monitor
products issued by your national meteorological service.
DISCUSSION AND OUTLOOK
----------------------
At 400 PM CDT (2100 UTC), the center of Tropical Depression Three
was located near latitude 19.6 North, longitude 91.2 West. The
depression is moving toward the west-northwest near 7 mph (11 km/h).
This motion at a slower forward speed is expected tonight. The
depression is forecast to turn west-southwestward or southward at a
slower forward speed on Tuesday, and meander over the southern Bay
of Campeche through late Wednesday. On the forecast track, the
center of the cyclone is forecast to be near the coast of the
southern Bay of Campeche Tuesday night through Thursday.
Maximum sustained winds are near 30 mph (45 km/h) with higher gusts.
Gradual strengthening is expected during the next couple of days and
the depression is forecast to become a tropical storm tonight or
Tuesday.
The estimated minimum central pressure is 1007 mb (29.74 inches).
HAZARDS AFFECTING LAND
----------------------
Key messages for Tropical Depression Three can be found in the
Tropical Cyclone Discussion under AWIPS header MIATCDAT3 and WMO
header WTNT43 KNHC.
RAINFALL: Tropical Depression Three is expected to produce rain
accumulations of 10 to 15 inches over parts of the Mexican states
of Tabasco and Veracruz and adjacent portions of Guatemala. This
system is also expected to produce rain accumulations of 5 to 10
inches over parts of El Salvador and Honduras. Isolated maximum
rainfall amounts of 20 inches are possible in the Mexican states of
Tabasco, Veracruz, Oaxaca and portions of Guatemala. This rainfall
may produce life-threatening flash floods and mudslides.
WIND: Tropical storm conditions are expected to first reach the
coast within the warning area Tuesday night.
NEXT ADVISORY
-------------
Next intermediate advisory at 700 PM CDT.
Next complete advisory at 1000 PM CDT.
$$
Forecaster Brown
Tropical Depression Three Discussion Number 1
NWS National Hurricane Center Miami FL AL032020
400 PM CDT Mon Jun 01 2020
Recent satellite data and surface observations from Mexico show
that the circulation associated with the area of disturbed weather
over the Yucatan peninsula has become better defined during the
past several hours, and that the center has moved over the eastern
portion of the Bay of Campeche. Although the deep convection has
waned somewhat, there is evidence of banding in both visible
satellite imagery and recent radar data from Sabancuy, Mexico.
Based on these data, advisories are being issued on a tropical
depression. The initial intensity is set at 25 kt, which is in
agreement with earlier ASCAT data.
The depression will be moving over the warm waters over the Bay of
Campeche and upper-level winds are forecast to be generally
conducive for strengthening during the next couple of days. The NHC
forecast is in line with much of the intensity guidance and calls
for the system to become a tropical storm in 12 to 24 hours, with
some additional strengthening predicted through 48 hours while the
system remains over the southern Bay of Campeche. After that time,
the system's intensity will depend on how much it interacts with
land. Although the latest runs of the GFS and ECMWF models
take the cyclone inland over southern Mexico, the NHC forecast
keeps it just offshore and shows the cyclone maintaining tropical
storm strength. Later in the period, the guidance suggests that
the system could strengthen over the south-central Gulf of Mexico,
but the latter portion of the intensity forecast is of low
confidence.
The depression is moving west-northwestward or 290/6 kt. The system
has been moving cyclonically around a larger gyre over Central
America during the past couple of days, and while it remains
embedded within the gyre it is forecast to turn west-southwestward,
and then southward at a slower forward speed over the next couple of
days. On this track, the cyclone is expected to move near the
southern Bay of Campeche coast during the next day or two, and
confidence it that portion of the track forecast is high. After
that time, two distinct scenarios emerges. The first is that the
cyclone continues moving southward and weakens or dissipates over
the rugged terrain over southern Mexico. The latest runs of the
ECMWF and GFS favor that scenario. In this scenario, both models
show a new system developing near the south-central Gulf of Mexico
from another vorticity center that rotates around the larger gyre.
The second scenario, favored by the UKMET and some EC ensemble
members, is for the depression to eject north-northeast moving
into the central Gulf of Mexico by day 5. The NHC forecast favors
the latter, but it is certainly possible that this tropical cyclone
will move inland and dissipates and a new cyclone formation occurs
later this week. The latter portion of both the track and intensity
forecast are of quite low confidence.
Key Messages:
1. The depression is expected to bring heavy rainfall to portions of
southern Mexico, Guatemala, Honduras and El Salvador, which could
cause life-threatening flash flooding and mudslides. Refer to
products from your local weather office for more information.
2. Tropical storm conditions are expected along the coast of Mexico
where a tropical storm warning is in effect.
3. The system is forecast to begin moving northward across the Gulf
of Mexico later this week. However, it is too soon to specify the
location and timing of any potential impacts along the U.S. Gulf
Coast. Interests in these areas should monitor the progress of this
system through the week and ensure they have their hurricane plan in
place as we begin the season.
FORECAST POSITIONS AND MAX WINDS
INIT 01/2100Z 19.6N 91.2W 25 KT 30 MPH
12H 02/0600Z 19.8N 92.3W 30 KT 35 MPH
24H 02/1800Z 19.5N 92.8W 35 KT 40 MPH
36H 03/0600Z 19.2N 93.0W 40 KT 45 MPH
48H 03/1800Z 18.8N 93.2W 45 KT 50 MPH
60H 04/0600Z 18.8N 93.2W 45 KT 50 MPH
72H 04/1800Z 18.8N 93.2W 45 KT 50 MPH
96H 05/1800Z 19.0N 92.8W 45 KT 50 MPH
120H 06/1800Z 23.0N 91.0W 50 KT 60 MPH
$$
Forecaster Brown
