Overall Green Tropical Cyclone alert for TWENTY-ONE-23 in Nicaragua, Honduras from 23 Oct 2023 21:00 UTC to 24 Oct 2023 15:00 UTC

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Overall Green alert Tropical Cyclone for TWENTY-ONE-23

in Nicaragua, Honduras

Global Telecommunication Service

GTS (Global Telecommunication Service) is the official Warning and Alerting channel by the World Meteorological Organization (WMO) adopted by several Warning Organizations. As soon as a new GTS message regarding Tropical Cyclones(WT) or Tsunami(WE) the messages are processed and possibly assigned to the specific event. When a new GTS message is present an new tab in the specific event report page is present.The presence of a GTS message is shown in the homepage with a dedicated icon.

Click on the messages list to visualize on the right the detailed text.

Measurements Levels

SOURCE	GAUGE LOCATION	LAT	LON	TIME (UTC)	HEIGHT (m)	PERIOD (min)

24/10 14:59 WTNT41KNHC241457

24/10 14:59 WTNT31KNHC241456

24/10 14:59 WTNT21KNHC241456

24/10 08:44 WTNT41KNHC240842

24/10 08:44 WTNT31KNHC240842

24/10 08:43 WTNT21KNHC240841

24/10 02:35 WTNT41KNHC240233

24/10 02:34 WTNT31KNHC240232

24/10 02:34 WTNT21KNHC240232

23/10 20:41 WTNT41KNHC232039

23/10 20:40 WTNT31KNHC232038

23/10 20:39 WTNT21KNHC232037

Original Message :

WTNT41 KNHC 241457
TCDAT1

Remnants Of Twenty-One Discussion Number 4
NWS National Hurricane Center Miami FL AL212023
1100 AM EDT Tue Oct 24 2023

Satellite images show that the convection associated with Tropical
Depression Twenty-One has weakened, and there are no signs of a
well-defined surface center. Thus the system has dissipated over
Nicaragua and the initial wind speed is set to 20 kt. The remnants
of the system are forecast to continue west-northwestward to
westward and cross over to the eastern Pacific by Wednesday. Heavy
rainfall with flash and urban flooding remain the primary impacts
even as the system dissipates.

This is the last advisory from the National Hurricane Center on
this system.

KEY MESSAGES:

1. Heavy rains from the remnants of the depression will continue to
impact portions of Nicaragua through Tuesday night with heavy
rainfall spreading into Honduras during the day on Tuesday. This
rainfall is likely to produce flash and urban flooding, along with
possible mudslides in areas of higher terrain.

FORECAST POSITIONS AND MAX WINDS

INIT 24/1500Z 13.6N 84.8W 20 KT 25 MPH...REMNANTS OF
12H 25/0000Z...DISSIPATED

$$
Forecaster Bucci

>

Original Message :

WTNT31 KNHC 241456
TCPAT1

BULLETIN
Remnants Of Twenty-One Advisory Number 4
NWS National Hurricane Center Miami FL AL212023
1100 AM EDT Tue Oct 24 2023

...TROPICAL DEPRESSION DISSIPATES INLAND...
...THIS IS THE LAST ADVISORY...

SUMMARY OF 1100 AM EDT...1500 UTC...INFORMATION
-----------------------------------------------
LOCATION...13.6N 84.8W
ABOUT 130 MI...210 KM NNW OF BLUEFIELDS NICARAGUA
MAXIMUM SUSTAINED WINDS...25 MPH...35 KM/H
PRESENT MOVEMENT...WNW OR 290 DEGREES AT 3 MPH...6 KM/H
MINIMUM CENTRAL PRESSURE...1007 MB...29.74 INCHES

WATCHES AND WARNINGS
--------------------
There are no coastal watches or warnings in effect.

DISCUSSION AND OUTLOOK
----------------------
At 1100 AM EDT (1500 UTC), the remnants of Tropical Depression
Twenty-One were located near latitude 13.6 North, longitude 84.8
West. The remnants are moving toward the west-northwest near 3 mph
(6 km/h) and gradual turn toward the west is expected soon.

Maximum sustained winds are near 25 mph (35 km/h) with higher gusts.

The estimated minimum central pressure is 1007 mb (29.74 inches).

HAZARDS AFFECTING LAND
----------------------
Key messages for the remnants of Tropical Depression Twenty-One can
be found in the Tropical Cyclone Discussion under AWIPS header
MIATCDAT1 and WMO header WTNT41 KNHC.

RAINFALL: The remnants of the tropical depression are expected to
produce additional rainfall totals of 4 to 8 inches with maximum
amounts of 12 inches across Nicaragua and 2 to 4 inches with maximum
amounts of 6 inches across southern and eastern Honduras. These
rains are likely to produce flash and urban flooding, along with
mudslides in areas of higher terrain.

NEXT ADVISORY
-------------
This is the last public advisory issued by the National Hurricane
Center on this system.

$$
Forecaster Bucci

>

Original Message :

WTNT21 KNHC 241456
TCMAT1

REMNANTS OF TWENTY-ONE FORECAST/ADVISORY NUMBER 4
NWS NATIONAL HURRICANE CENTER MIAMI FL AL212023
1500 UTC TUE OCT 24 2023

NOTICE... LAND-BASED TROPICAL CYCLONE WATCHES AND WARNINGS ARE NO
LONGER INCLUDED IN THE TROPICAL CYCLONE FORECAST/ADVISORY...(TCM).
CURRENT LAND-BASED COASTAL WATCHES AND WARNINGS CAN BE FOUND IN THE
MOST RECENTLY ISSUED TROPICAL CYCLONE PUBLIC ADVISORY...(TCP).

REMNANTS OF CENTER LOCATED NEAR 13.6N 84.8W AT 24/1500Z
POSITION ACCURATE WITHIN 60 NM

PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 290 DEGREES AT 3 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 1007 MB
MAX SUSTAINED WINDS 20 KT WITH GUSTS TO 30 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 13.6N 84.8W AT 24/1500Z
AT 24/1200Z CENTER WAS LOCATED NEAR 13.5N 84.4W

FORECAST VALID 25/0000Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 13.6N 84.8W

THIS IS THE LAST FORECAST/ADVISORY ISSUED BY THE
NATIONAL HURRICANE CENTER ON THIS SYSTEM

$$
FORECASTER BUCCI

>

Original Message :

WTNT41 KNHC 240842
TCDAT1

Tropical Depression Twenty-One Discussion Number 3
NWS National Hurricane Center Miami FL AL212023
500 AM EDT Tue Oct 24 2023

Proxy-vis satellite imagery indicates that the center of Tropical
Depression Twenty-One has moved inland over Nicaragua tonight. This
was confirmed from both ASCAT B and -C scatterometer passes that
depicted there was no circulation offshore. Infrared imagery
indicates that deep convection remains just offshore. The initial
intensity is held at 25 kt for this advisory.

Since the center of the circulation has moved inland, the depression
should become a remnant low or dissipate later today. Heavy
rainfall with flash and urban flooding remain the primary impacts
even as the system dissipates. The estimated motion is around 310/5
kt. The depression and then the remnants, are forecast to continue
northwestward, and then generally head westward toward the eastern
Pacific after that.

KEY MESSAGES:

1. Heavy rains from the depression will continue to impact portions
of Nicaragua through Tuesday night with heavy rainfall spreading
into Honduras during the day on Tuesday. This rainfall is likely to
produce flash and urban flooding, along with possible mudslides in
areas of higher terrain.

FORECAST POSITIONS AND MAX WINDS

INIT 24/0900Z 13.1N 84.0W 25 KT 30 MPH
12H 24/1800Z 13.2N 84.8W 25 KT 30 MPH...POST-TROP/REMNT LOW
24H 25/0600Z...DISSIPATED

$$
Forecaster Kelly

>

Original Message :

WTNT31 KNHC 240842
TCPAT1

BULLETIN
Tropical Depression Twenty-One Advisory Number 3
NWS National Hurricane Center Miami FL AL212023
500 AM EDT Tue Oct 24 2023

...TROPICAL DEPRESSION PRODUCING HEAVY RAINFALL OVER NICARAGUA...

SUMMARY OF 500 AM EDT...0900 UTC...INFORMATION
----------------------------------------------
LOCATION...13.1N 84.0W
ABOUT 75 MI...125 KM N OF BLUEFIELDS NICARAGUA
MAXIMUM SUSTAINED WINDS...30 MPH...45 KM/H
PRESENT MOVEMENT...NW OR 310 DEGREES AT 6 MPH...9 KM/H
MINIMUM CENTRAL PRESSURE...1007 MB...29.74 INCHES

WATCHES AND WARNINGS
--------------------
There are no coastal watches or warnings in effect.

DISCUSSION AND OUTLOOK
----------------------
At 500 AM EDT (0900 UTC), the center of Tropical Depression
Twenty-One was located near latitude 13.1 North, longitude 84.0
West. The depression is moving toward the northwest near 6 mph
(9 km/h), and a northwestward to west-northwestward motion will
continue during the next day or so.

Maximum sustained winds are near 30 mph (45 km/h) with higher gusts.
Little change in strength is forecast. The depression is expected
to dissipate over Nicaragua later today.

The estimated minimum central pressure is 1007 mb (29.74 inches).

HAZARDS AFFECTING LAND
----------------------
Key messages for Tropical Depression Twenty-One can be found in the
Tropical Cyclone Discussion under AWIPS header MIATCDAT1 and WMO
header WTNT41 KNHC.

RAINFALL: The tropical depression is expected to produce additional
rainfall totals of 4 to 8 inches with maximum amounts of 12 inches
across Nicaragua and 2 to 4 inches with maximum amounts of 6 inches
across southern and eastern Honduras. These rains are likely to
produce flash and urban flooding, along with mudslides in areas of
higher terrain.

NEXT ADVISORY
-------------
Next complete advisory at 1100 AM EDT.

$$
Forecaster Kelly

>

Original Message :

WTNT21 KNHC 240841
TCMAT1

TROPICAL DEPRESSION TWENTY-ONE FORECAST/ADVISORY NUMBER 3
NWS NATIONAL HURRICANE CENTER MIAMI FL AL212023
0900 UTC TUE OCT 24 2023

NOTICE... LAND-BASED TROPICAL CYCLONE WATCHES AND WARNINGS ARE NO
LONGER INCLUDED IN THE TROPICAL CYCLONE FORECAST/ADVISORY...(TCM).
CURRENT LAND-BASED COASTAL WATCHES AND WARNINGS CAN BE FOUND IN THE
MOST RECENTLY ISSUED TROPICAL CYCLONE PUBLIC ADVISORY...(TCP).

TROPICAL DEPRESSION CENTER LOCATED NEAR 13.1N 84.0W AT 24/0900Z
POSITION ACCURATE WITHIN 60 NM

PRESENT MOVEMENT TOWARD THE NORTHWEST OR 310 DEGREES AT 5 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 13.1N 84.0W AT 24/0900Z
AT 24/0600Z CENTER WAS LOCATED NEAR 13.0N 83.8W

FORECAST VALID 24/1800Z 13.2N 84.8W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.

FORECAST VALID 25/0600Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 13.1N 84.0W

NEXT ADVISORY AT 24/1500Z

$$
FORECASTER KELLY

>

Original Message :

WTNT41 KNHC 240233
TCDAT1

Tropical Depression Twenty-One Discussion Number 2
NWS National Hurricane Center Miami FL AL212023
1100 PM EDT Mon Oct 23 2023

It has been a challenge to find the center of the depression this
evening. Surface observations from Bluefields Airport in Nicaragua
indicated that the center of the depression likely moved northeast
of the observing station earlier this evening, but pressures in the
area were not particularly low. Since then, a robust mid-level
circulation has been visible in shortwave-infrared imagery, but it
isn't clear if this extends to the surface. ASCAT data is expected
within the next couple of hours, which should provide clarity over
whether the center of the depression has reformed under the
mid-level circulation, or if has already moved inland. TAFB and SAB
Dvorak estimates still support an intensity near 25 kt.

Once inland, the depression should quickly weaken and dissipate.
However, its worth noting that if the center is still over water
and remains there for any period of time overnight, some slight
strengthening could occur since the environment is otherwise
favorable for intensification. The long-term estimated motion is
around 310/4 kt, but this is highly uncertain. The depression, or
its remnants, are forecast to continue northwestward tonight, and
then generally head westward toward the eastern Pacific after that.

KEY MESSAGES:

1. Heavy rains from the depression will continue to impact portions
of Nicaragua through Tuesday night with heavy rainfall spreading
into Honduras during the day on Tuesday. This rainfall is likely to
produce flash and urban flooding, along with possible mudslides in
areas of higher terrain.

FORECAST POSITIONS AND MAX WINDS

INIT 24/0300Z 12.4N 83.4W 25 KT 30 MPH
12H 24/1200Z 13.1N 84.2W 25 KT 30 MPH...POST-TROP/REMNT LOW
24H 25/0000Z...DISSIPATED

$$
Forecaster D. Zelinsky

>

Original Message :

WTNT31 KNHC 240232
TCPAT1

BULLETIN
Tropical Depression Twenty-One Advisory Number 2
NWS National Hurricane Center Miami FL AL212023
1100 PM EDT Mon Oct 23 2023

...CENTER OF TROPICAL DEPRESSION LOCATED NEAR THE COAST OF
NICARAGUA...
...HEAVY RAINFALL REMAINS THE PRIMARY THREAT...

SUMMARY OF 1100 PM EDT...0300 UTC...INFORMATION
-----------------------------------------------
LOCATION...12.4N 83.4W
ABOUT 40 MI...60 KM NE OF BLUEFIELDS NICARAGUA
MAXIMUM SUSTAINED WINDS...30 MPH...45 KM/H
PRESENT MOVEMENT...NW OR 310 DEGREES AT 5 MPH...7 KM/H
MINIMUM CENTRAL PRESSURE...1007 MB...29.74 INCHES

WATCHES AND WARNINGS
--------------------
There are no coastal watches or warnings in effect.

Interests along the coast of Nicaragua should monitor the progress
of this system.

DISCUSSION AND OUTLOOK
----------------------
At 1100 PM EDT (0300 UTC), the center of Tropical Depression
Twenty-One was located near latitude 12.4 North, longitude 83.4
West. The depression is moving toward the northwest near 5 mph (7
km/h) and this motion is expected to continue tonight. On the
forecast track, the depression will move inland over the next few
hours over eastern Nicaragua.

Maximum sustained winds are near 30 mph (45 km/h) with higher gusts.
Little change in strength is forecast. The depression is forecast
to dissipate inland over Nicaragua tomorrow.

The estimated minimum central pressure is 1007 mb (29.74 inches).

HAZARDS AFFECTING LAND
----------------------
Key messages for Tropical Depression Twenty-One can be found in the
Tropical Cyclone Discussion under AWIPS header MIATCDAT1 and WMO
header WTNT41 KNHC.

RAINFALL: The tropical depression is expected to produce additional
rainfall totals of 4 to 8 inches with maximum amounts of 12 inches
across Nicaragua and 2 to 4 inches with maximum amounts of 6 inches
across southern and eastern Honduras. These rains are likely to
produce flash and urban flooding, along with mudslides in areas of
higher terrain.

NEXT ADVISORY
-------------
Next complete advisory at 500 AM EDT.

$$
Forecaster D. Zelinsky

>

Original Message :

WTNT21 KNHC 240232
TCMAT1

TROPICAL DEPRESSION TWENTY-ONE FORECAST/ADVISORY NUMBER 2
NWS NATIONAL HURRICANE CENTER MIAMI FL AL212023
0300 UTC TUE OCT 24 2023

NOTICE... LAND-BASED TROPICAL CYCLONE WATCHES AND WARNINGS ARE NO
LONGER INCLUDED IN THE TROPICAL CYCLONE FORECAST/ADVISORY...(TCM).
CURRENT LAND-BASED COASTAL WATCHES AND WARNINGS CAN BE FOUND IN THE
MOST RECENTLY ISSUED TROPICAL CYCLONE PUBLIC ADVISORY...(TCP).

TROPICAL DEPRESSION CENTER LOCATED NEAR 12.4N 83.4W AT 24/0300Z
POSITION ACCURATE WITHIN 60 NM

PRESENT MOVEMENT TOWARD THE NORTHWEST OR 310 DEGREES AT 4 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 12.4N 83.4W AT 24/0300Z
AT 24/0000Z CENTER WAS LOCATED NEAR 12.2N 83.3W

FORECAST VALID 24/1200Z 13.1N 84.2W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.

FORECAST VALID 25/0000Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 12.4N 83.4W

NEXT ADVISORY AT 24/0900Z

$$
FORECASTER D. ZELINSKY

>

Original Message :

WTNT41 KNHC 232039
TCDAT1

Tropical Depression Twenty-One Discussion Number 1
NWS National Hurricane Center Miami FL AL212023
500 PM EDT Mon Oct 23 2023

The area of low pressure in the southwestern Caribbean Sea that the
NHC has been monitoring for the past few days has developed a
well-defined circulation. Convection is well-organized and has
persisted for over 12 hours, thus the disturbance is upgraded to
Tropical Depression Twenty-One. Scatterometer satellite data from a
few hours ago indicate that the intensity is around 25 kt. This is
also confirmed by the most recent Dvorak estimates provided by
TAFB and SAB.

The initial motion is estimated at an uncertain 280/4. The tropical
depression is on the western periphery of the upper level ridge,
which should keep it on a generally westward track over the next few
days. On this track, this system will be making landfall in southern
Nicaragua later this evening or tonight.

The tropical depression is in a favorable environment with low
wind shear values and warm sea-surface temperatures. However,
no strengthening is forecast since the depression is expected to
move inland soon. The depression will weaken quickly over Nicaragua
and dissipation is likely to occur tomorrow.

KEY MESSAGES:

1. Heavy rains from the depression will continue to impact portions
of Nicaragua through Tuesday night with heavy rainfall spreading
into Honduras during the day on Tuesday. This rainfall is likely to
produce flash and urban flooding, along with possible mudslides in
areas of higher terrain.

FORECAST POSITIONS AND MAX WINDS

INIT 23/2100Z 11.6N 83.5W 25 KT 30 MPH
12H 24/0600Z 12.0N 84.2W 20 KT 25 MPH...INLAND
24H 24/1800Z...DISSIPATED

$$
Forecaster Delgado/Cangialosi

>

Original Message :

WTNT31 KNHC 232038
TCPAT1

BULLETIN
Tropical Depression Twenty-One Advisory Number 1
NWS National Hurricane Center Miami FL AL212023
500 PM EDT Mon Oct 23 2023

...TROPICAL DEPRESSION FORMS NEAR THE SOUTHERN COAST OF NICARAGUA...
...HEAVY RAINFALL IS THE PRIMARY THREAT...

SUMMARY OF 500 PM EDT...2100 UTC...INFORMATION
----------------------------------------------
LOCATION...11.6N 83.5W
ABOUT 35 MI...55 KM SE OF BLUEFIELDS NICARAGUA
MAXIMUM SUSTAINED WINDS...30 MPH...45 KM/H
PRESENT MOVEMENT...W OR 280 DEGREES AT 5 MPH...7 KM/H
MINIMUM CENTRAL PRESSURE...1007 MB...29.74 INCHES

WATCHES AND WARNINGS
--------------------
There are no coastal watches or warnings in effect.

Interests along the coast of Nicaragua should monitor the progress
of this system.

DISCUSSION AND OUTLOOK
----------------------
At 500 PM EDT (2100 UTC), the center of Tropical Depression
Twenty-One was located near latitude 11.6 North, longitude 83.5
West. The depression is moving toward the west near 5 mph (7 km/h)
and a west to west-northwest motion is expected until it dissipates.

Maximum sustained winds are near 30 mph (45 km/h) with higher gusts.
No strengthening is expected as the depression will be inland soon.
Dissipation is likely to occur tomorrow.

The estimated minimum central pressure is 1007 mb (29.74 inches).

HAZARDS AFFECTING LAND
----------------------
Key messages for Tropical Depression Twenty-One can be found in the
Tropical Cyclone Discussion under AWIPS header MIATCDAT1 and WMO
header WTNT41 KNHC.

RAINFALL: The tropical depression is expected to produce additional
rainfall totals of 4 to 8 inches with maximum amounts of 12 inches
across Nicaragua and 2 to 4 inches with maximum amounts of 6 inches
across southern and eastern Honduras. These rains are likely to
produce flash and urban flooding, along with mudslides in areas of
higher terrain.

NEXT ADVISORY
-------------
Next complete advisory at 1100 PM EDT.

$$
Forecaster Delgado/Cangialosi

>

Original Message :

WTNT21 KNHC 232037
TCMAT1

TROPICAL DEPRESSION TWENTY-ONE FORECAST/ADVISORY NUMBER 1
NWS NATIONAL HURRICANE CENTER MIAMI FL AL212023
2100 UTC MON OCT 23 2023

NOTICE... LAND-BASED TROPICAL CYCLONE WATCHES AND WARNINGS ARE NO
LONGER INCLUDED IN THE TROPICAL CYCLONE FORECAST/ADVISORY...(TCM).
CURRENT LAND-BASED COASTAL WATCHES AND WARNINGS CAN BE FOUND IN THE
MOST RECENTLY ISSUED TROPICAL CYCLONE PUBLIC ADVISORY...(TCP).

TROPICAL DEPRESSION CENTER LOCATED NEAR 11.6N 83.5W AT 23/2100Z
POSITION ACCURATE WITHIN 20 NM

PRESENT MOVEMENT TOWARD THE WEST OR 280 DEGREES AT 4 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 11.6N 83.5W AT 23/2100Z
AT 23/1800Z CENTER WAS LOCATED NEAR 11.4N 83.3W

FORECAST VALID 24/0600Z 12.0N 84.2W...INLAND
MAX WIND 20 KT...GUSTS 30 KT.

FORECAST VALID 24/1800Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 11.6N 83.5W

NEXT ADVISORY AT 24/0300Z

$$
FORECASTER DELGADO/CANGIALOSI

>

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