Overall Green Tropical Cyclone for ANDREA-25 Off-shore from 24 Jun 2025 15:00 UTC to 25 Jun 2025 03:00 UTC

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Overall Green Tropical Cyclone for ANDREA-25

Off-shore

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)

25/06 02:47 WTNT41KNHC250245

25/06 02:46 WTNT21KNHC250244

25/06 02:46 WTNT31KNHC250244

24/06 20:39 WTNT41KNHC242036

24/06 20:37 WTNT31KNHC242035

24/06 20:36 WTNT21KNHC242034

24/06 14:13 WTNT41KNHC241411

24/06 14:12 WTNT21KNHC241410

24/06 14:12 WTNT31KNHC241410

Original Message :

WTNT41 KNHC 250245
TCDAT1

Post-Tropical Cyclone Andrea Discussion Number 3
NWS National Hurricane Center Miami FL AL012025
1100 PM AST Tue Jun 24 2025

Andrea is now a remnant low. The system has lacked deep convection
since earlier this morning and is unlikely to redevelop any while
traversing increasingly cold sea-surface temperatures, strong
northeasterly vertical wind shear, and very dry mid-level air.
Therefore, this will be the final advisory on Andrea. Scatterometer
data received after the last advisory also indicates winds have
decreased to about 30 kt. The remnant low should continue to spin
down, with the various global and regional model guidance showing
the circulation opening up into a surface trough in about 24 hours.

The initial motion is 060/17 kt. This motion is expected to continue
until the remnant low dissipates. Additional information on this
system can be found in High Seas Forecasts issued by the National
Weather Service, under AWIPS header NFDHSFAT1, WMO header FZNT01
KWBC, and online at ocean.weather.gov/shtml/NFDHSFAT1.php

FORECAST POSITIONS AND MAX WINDS

INIT 25/0300Z 38.7N 45.2W 30 KT 35 MPH...POST-TROP/REMNT LOW
12H 25/1200Z 40.1N 41.1W 25 KT 30 MPH...POST-TROP/REMNT LOW
24H 26/0000Z...DISSIPATED

$$
Forecaster Papin

Original Message :

WTNT21 KNHC 250244
TCMAT1

POST-TROPICAL CYCLONE ANDREA FORECAST/ADVISORY NUMBER 3
NWS NATIONAL HURRICANE CENTER MIAMI FL AL012025
0300 UTC WED JUN 25 2025

POST-TROPICAL CYCLONE CENTER LOCATED NEAR 38.7N 45.2W AT 25/0300Z
POSITION ACCURATE WITHIN 30 NM

PRESENT MOVEMENT TOWARD THE EAST-NORTHEAST OR 60 DEGREES AT 17 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 1015 MB
MAX SUSTAINED WINDS 30 KT WITH GUSTS TO 40 KT.
4 M SEAS.... 0NE 0SE 60SW 0NW.
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 38.7N 45.2W AT 25/0300Z
AT 25/0000Z CENTER WAS LOCATED NEAR 38.3N 45.7W

FORECAST VALID 25/1200Z 40.1N 41.1W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.

FORECAST VALID 26/0000Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 38.7N 45.2W

THIS IS THE LAST FORECAST/ADVISORY ISSUED BY THE NATIONAL HURRICANE
CENTER ON THIS SYSTEM. ADDITIONAL INFORMATION ON THIS SYSTEM CAN BE
FOUND IN HIGH SEAS FORECASTS ISSUED BY THE NATIONAL WEATHER
SERVICE...UNDER AWIPS HEADER NFDHSFAT1 AND WMO HEADER FZNT01 KWBC.

$$
FORECASTER PAPIN

Original Message :

WTNT31 KNHC 250244
TCPAT1

BULLETIN
Post-Tropical Cyclone Andrea Advisory Number 3
NWS National Hurricane Center Miami FL AL012025
1100 PM AST Tue Jun 24 2025

...ANDREA BECOMES A REMNANT LOW...
...THIS IS THE FINAL ADVISORY...

SUMMARY OF 1100 PM AST...0300 UTC...INFORMATION
-----------------------------------------------
LOCATION...38.7N 45.2W
ABOUT 985 MI...1585 KM W OF THE AZORES
MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H
PRESENT MOVEMENT...ENE OR 60 DEGREES AT 20 MPH...31 KM/H
MINIMUM CENTRAL PRESSURE...1015 MB...29.98 INCHES

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

DISCUSSION AND OUTLOOK
----------------------
At 1100 PM AST (0300 UTC), the center of Post-Tropical Cyclone
Andrea was located near latitude 38.7 North, longitude 45.2 West.
The post-tropical cyclone is moving toward the east-northeast near
20 mph (31 km/h) and this motion is expected to continue until the
circulation opens up into a trough.

Maximum sustained winds have decreased to near 35 mph (55 km/h) with
higher gusts. Additional weakening is expected and the remnant low
is expected to degenerate into a trough l.

The estimated minimum central pressure is 1015 mb (29.98 inches).

HAZARDS AFFECTING LAND
----------------------
None.

NEXT ADVISORY
-------------
This is the last public advisory issued by the National Hurricane
Center on this system. Additional information on this system can be
found in High Seas Forecasts issued by the National Weather Service,
under AWIPS header NFDHSFAT1, WMO header FZNT01 KWBC, and online at
ocean.weather.gov/shtml/NFDHSFAT1.php

$$
Forecaster Papin

Original Message :

WTNT41 KNHC 242036
TCDAT1

Tropical Storm Andrea Discussion Number 2
NWS National Hurricane Center Miami FL AL012025
500 PM AST Tue Jun 24 2025

Deep convection associated with Andrea collapsed around 1500Z and
has not redeveloped. The latest subjective Dvorak current intensity
estimate from TAFB was 1.5, which is in line with the degradation
in satellite presentation. Scatterometer data from earlier
this morning showed numerous 33 to 36 knot wind barbs, so the
initial intensity for this advisory is held at 35 knots.

The initial motion is 050/17 knots. This motion is expected to
continue through dissipation, which is forecast to occur by 24
hours. The track forecast closely follows the latest consensus
guidance.

The clock is ticking on Andrea now with the loss of deep convection.
This will be a short-lived tropical storm, as environmental
conditions will become increasingly hostile during the next 12 to 24
hours. Water temperatures will drop to around 20/21C, with vertical
wind shear increasing to 30-40 knots, in a dry mid-level
environment. The intensity forecast shows Andrea becoming a
post-tropical remnant low later tonight, with the system expected to
dissipate on Wednesday.

FORECAST POSITIONS AND MAX WINDS

INIT 24/2100Z 37.9N 47.4W 35 KT 40 MPH
12H 25/0600Z 39.0N 44.5W 30 KT 35 MPH...POST-TROP/REMNT LOW
24H 25/1800Z...DISSIPATED

$$
Forecaster Jelsema/Blake

Original Message :

WTNT31 KNHC 242035
TCPAT1

BULLETIN
Tropical Storm Andrea Advisory Number 2
NWS National Hurricane Center Miami FL AL012025
500 PM AST Tue Jun 24 2025

...ANDREA EXPECTED TO BECOME A POST-TROPICAL REMNANT LOW LATER
TONIGHT...

SUMMARY OF 500 PM AST...2100 UTC...INFORMATION
----------------------------------------------
LOCATION...37.9N 47.4W
ABOUT 1110 MI...1785 KM W OF THE AZORES
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H
PRESENT MOVEMENT...NE OR 50 DEGREES AT 20 MPH...31 KM/H
MINIMUM CENTRAL PRESSURE...1015 MB...29.98 INCHES

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

DISCUSSION AND OUTLOOK
----------------------
At 500 PM AST (2100 UTC), the center of Tropical Storm Andrea was
located near latitude 37.9 North, longitude 47.4 West. Andrea is
moving toward the northeast near 20 mph (31 km/h), and this
motion is expected to continue tonight and Wednesday.

Maximum sustained winds are near 40 mph (65 km/h) with higher gusts.
Weakening is expected to begin later tonight, with Andrea
dissipating on Wednesday.

Tropical-storm-force winds extend outward up to 60 miles (95 km)
from the center.

The estimated minimum central pressure is 1015 mb (29.98 inches).

HAZARDS AFFECTING LAND
----------------------
None.

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

$$
Forecaster Jelsema/Blake

Original Message :

WTNT21 KNHC 242034
TCMAT1

TROPICAL STORM ANDREA FORECAST/ADVISORY NUMBER 2
NWS NATIONAL HURRICANE CENTER MIAMI FL AL012025
2100 UTC TUE JUN 24 2025

TROPICAL STORM CENTER LOCATED NEAR 37.9N 47.4W AT 24/2100Z
POSITION ACCURATE WITHIN 30 NM

PRESENT MOVEMENT TOWARD THE NORTHEAST OR 50 DEGREES AT 17 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 1015 MB
MAX SUSTAINED WINDS 35 KT WITH GUSTS TO 45 KT.
34 KT....... 40NE 50SE 40SW 0NW.
4 M SEAS.... 0NE 60SE 60SW 0NW.
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 37.9N 47.4W AT 24/2100Z
AT 24/1800Z CENTER WAS LOCATED NEAR 37.3N 48.1W

FORECAST VALID 25/0600Z 39.0N 44.5W...POST-TROP/REMNT LOW
MAX WIND 30 KT...GUSTS 40 KT.

FORECAST VALID 25/1800Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 37.9N 47.4W

NEXT ADVISORY AT 25/0300Z

$$
FORECASTER JELSEMA/BLAKE

Original Message :

WTNT41 KNHC 241411
TCDAT1

Tropical Storm Andrea Discussion Number 1
NWS National Hurricane Center Miami FL AL012025
1100 AM AST Tue Jun 24 2025

The area of low pressure between Bermuda and the Azores that we have
been monitoring for a few days (90L) developed persistent deep
convection overnight. This is shown by the latest subjective Dvorak
current intensity estimate from TAFB of 2.0, and the current
wind estimate of 35 kt is supported by the past several
scatterometer passes showing 30 to 35 knot winds. Even though deep
convection is now decreasing, due to the persistent convection
overnight and pulsing convection over the past 36 hours, the system
has met the criteria of being classified as a tropical storm, albeit
a marginal one, making Tropical Storm Andrea the first Atlantic
storm of the year.

The initial motion is 060/15 knots. This motion is expected to
continue through dissipation, which is forecast to occur by 36
hours. The track forecast closely follows the TVCA and HCCA
consensus guidance.

Andrea will be a short-lived tropical storm, as environmental
conditions will become increasingly hostile over the next day or
so. Water temperatures will plummet to around 21/22C, with vertical
wind shear increasing to 35-40 knots, in a dry mid-level
environment. The intensity forecast holds Andrea at tropical storm
strength today, with the system weakening into a post-tropical
remnant low by Wednesday morning because of the cold waters and
dissipating shortly thereafter.

FORECAST POSITIONS AND MAX WINDS

INIT 24/1500Z 36.6N 48.9W 35 KT 40 MPH
12H 25/0000Z 37.9N 46.3W 35 KT 40 MPH
24H 25/1200Z 39.6N 41.5W 30 KT 35 MPH...POST-TROP/REMNT LOW
36H 26/0000Z...DISSIPATED

$$
Forecaster Jelsema/Blake/Hagen

Original Message :

WTNT21 KNHC 241410
TCMAT1

TROPICAL STORM ANDREA FORECAST/ADVISORY NUMBER 1
NWS NATIONAL HURRICANE CENTER MIAMI FL AL012025
1500 UTC TUE JUN 24 2025

TROPICAL STORM CENTER LOCATED NEAR 36.6N 48.9W AT 24/1500Z
POSITION ACCURATE WITHIN 30 NM

PRESENT MOVEMENT TOWARD THE EAST-NORTHEAST OR 60 DEGREES AT 15 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 1014 MB
MAX SUSTAINED WINDS 35 KT WITH GUSTS TO 45 KT.
34 KT....... 0NE 40SE 0SW 0NW.
4 M SEAS.... 0NE 75SE 0SW 0NW.
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 36.6N 48.9W AT 24/1500Z
AT 24/1200Z CENTER WAS LOCATED NEAR 36.2N 49.7W

FORECAST VALID 25/0000Z 37.9N 46.3W
MAX WIND 35 KT...GUSTS 45 KT.
34 KT... 0NE 40SE 0SW 0NW.

FORECAST VALID 25/1200Z 39.6N 41.5W...POST-TROP/REMNT LOW
MAX WIND 30 KT...GUSTS 40 KT.

FORECAST VALID 26/0000Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 36.6N 48.9W

NEXT ADVISORY AT 24/2100Z

$$
FORECASTER JELSEMA/BLAKE/HAGEN

Original Message :

WTNT31 KNHC 241410
TCPAT1

BULLETIN
Tropical Storm Andrea Advisory Number 1
NWS National Hurricane Center Miami FL AL012025
1100 AM AST Tue Jun 24 2025

...ANDREA BECOMES THE FIRST TROPICAL STORM OF THE SEASON IN THE
ATLANTIC...

SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION
-----------------------------------------------
LOCATION...36.6N 48.9W
ABOUT 1205 MI...1940 KM W OF THE AZORES
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H
PRESENT MOVEMENT...ENE OR 60 DEGREES AT 17 MPH...28 KM/H
MINIMUM CENTRAL PRESSURE...1014 MB...29.95 INCHES

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

DISCUSSION AND OUTLOOK
----------------------
At 1100 AM AST (1500 UTC), the center of Tropical Storm Andrea was
located near latitude 36.6 North, longitude 48.9 West. Andrea is
moving toward the east-northeast near 17 mph (28 km/h), and this
motion is expected to continue for the next day or so.

Maximum sustained winds are near 40 mph (65 km/h) with higher gusts.
Little change in strength is expected today. Weakening is expected
to begin tonight, with Andrea dissipating by Wednesday night.

Tropical-storm-force winds extend outward up to 45 miles (75 km)
from the center.

The estimated minimum central pressure is 1014 mb (29.95 inches).

HAZARDS AFFECTING LAND
----------------------
None.

NEXT ADVISORY
-------------
Next complete advisory at 500 PM AST.

$$
Forecaster Jelsema/Blake/Hagen

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