Cyclocane

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This is the final warning / advisory for this storm as it has weakened below warning levels and/or the storm system is no longer a tropical cyclone.

Go to the main page to see active storms.

Hurricane Time Machine

ISAAC Current Status

...ISAAC BECOMES A POST-TROPICAL CYCLONE... ...THIS IS THE LAST ADVISORY...

Current Wind Speed 50 knots / 60 MPH

Max Predicted Wind Speed 50 knots / 60 MPH at

Current Watches/Warnings / Radar / Satellite

current US watches/warnings

map of current weather alerts in the United States

current radar loop

NWS weather radar loop of the coastal areas

If you're looking for other US radar loops, check out Radar Monster.

future radar imagery

future radar image of the Atlantic Ocean basin showing future possible storms and future locations of current storms

(above image is an example of the Western North Atlantic page - see Atlantic future radar page for a full set of images)

If a tropical storm or hurricane is threatening land, you can check my future radar for an idea of what radar might look like as the storm approaches.

ISAAC Land Hazards

NWS Local Hurricane Statements

ISAAC Tracker

ISAAC Satellite Loop

visible satellite loop of Post-Tropical Cyclone ISAAC from wisc.edu

ISAAC Alternate Tracking Map

ISAAC Spaghetti Models

Spaghetti models for ISAAC can be found here:

ISAAC spaghetti models page »

ISAAC Watches and Warnings

National Hurricane Center image showing current coastal watches and warnings and future ISAAC predicted path

Post-Tropical Cyclone ISAAC Tropical Cyclone Update

Post-Tropical Cyclone ISAAC Public Advisory

000
WTNT35 KNHC 301453
TCPAT5
 
BULLETIN
Post-Tropical Cyclone Isaac Advisory Number  19
NWS National Hurricane Center Miami FL       AL102024
300 PM GMT Mon Sep 30 2024
 
...ISAAC BECOMES A POST-TROPICAL CYCLONE...
...THIS IS THE LAST ADVISORY...
 
 
SUMMARY OF 300 PM GMT...1500 UTC...INFORMATION
----------------------------------------------
LOCATION...44.8N 29.1W
ABOUT 480 MI...775 KM NNW OF THE AZORES
MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H
PRESENT MOVEMENT...ENE OR 65 DEGREES AT 17 MPH...28 KM/H
MINIMUM CENTRAL PRESSURE...983 MB...29.03 INCHES
 
 
WATCHES AND WARNINGS
--------------------
There are no coastal watches or warnings in effect.
 
 
DISCUSSION AND OUTLOOK
----------------------
At 300 PM GMT (1500 UTC), the center of Post-Tropical Cyclone Isaac 
was located near latitude 44.8 North, longitude 29.1 West. The 
post-tropical cyclone is moving toward the east-northeast near 17 
mph (28 km/h) and a turn to the northeast is expected with a similar 
forward motion for the next several days.
 
Maximum sustained winds have decreased to near 60 mph (95 km/h)
with higher gusts. Gradual weakening is forecast over the next
several days.
 
Tropical-storm-force winds extend outward up to 185 miles (295 km)
from the center.
 
The estimated minimum central pressure is 983 mb (29.03 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
SURF:  Swells generated by Isaac will affect the Azores over the
next few days. These swells are likely to cause life-threatening
surf and rip current conditions.  Please consult products from your
local weather office.
 
 
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 Meteo France under WMO header 
FQNT50 LFPW and available on the web at 
www.meteofrance.com/previsions-meteo-marine/bulletin/grandlarge/ 
metarea2. Additional information on this system can also be found in 
High Seas Forecasts issued by the UK Met Office under WMO header 
FQNT21 EGRR and on the web at 
metoffice.gov.uk/weather/specialist-forecasts/coast-and-sea/high- 
seas-forecast/.
 
$$
Forecaster Papin

Public Advisory not available for this storm.

Post-Tropical Cyclone ISAAC Forecast Discussion

000
WTNT45 KNHC 301454
TCDAT5
 
Post-Tropical Cyclone Isaac Discussion Number  19
NWS National Hurricane Center Miami FL       AL102024
300 PM GMT Mon Sep 30 2024
 
Geostationary satellite data this morning indicates that Isaac has 
completed its transition to a Post-Tropical Extratropical Low and 
this will be the last NHC advisory. The remaining moderate-to-deep 
convection has sheared off to the northeast as stable stratocumulus 
clouds have fully infiltrated its low-level circulation from the 
west. The initial intensity has been lowered to 50 kt blending the 
latest subjective and objective measurements.
 
The post-tropical cyclone is still moving east-northeastward at 
about 065/15 kt. A subtle turn to the northeast is still expected 
over the next couple of days as the cyclone remains embedded in the 
mid-latitude westerlies. The guidance has shifted a bit east of the 
prior forecast track, partially a reflection of the more eastward 
initial position, and the NHC track was nudged in that direction. 
Over the forecast period, the cyclone is expected to slowly weaken, 
lacking baroclinic support for much non-tropical development. The 
low should ultimately dissipate in the far North Atlantic to the 
west of Ireland before the end of the week.
 
Additional information on this system can be found in 
High Seas Forecasts issued by Meteo France and the the UK Met 
Office. Links to each product are provided below:

Meteo France: WMO header FQNT50 LFPW and available on the web at 
www.meteofrance.com/previsions-meteo-marine/bulletin/grandlarge/ 
metarea2.

UK Met Office: WMO header FQNT21 EGRR and on the web at 
metoffice.gov.uk/weather/specialist-forecasts/coast-and-sea/high- 
seas-forecast/.

FORECAST POSITIONS AND MAX WINDS
 
INIT  30/1500Z 44.8N  29.1W   50 KT  60 MPH...POST-TROP/EXTRATROP
 12H  01/0000Z 46.0N  26.2W   45 KT  50 MPH...POST-TROP/EXTRATROP
 24H  01/1200Z 47.6N  23.6W   40 KT  45 MPH...POST-TROP/EXTRATROP
 36H  02/0000Z 49.3N  22.0W   35 KT  40 MPH...POST-TROP/EXTRATROP
 48H  02/1200Z 50.6N  20.7W   35 KT  40 MPH...POST-TROP/EXTRATROP
 60H  03/0000Z 52.0N  19.3W   35 KT  40 MPH...POST-TROP/EXTRATROP
 72H  03/1200Z 54.0N  17.5W   30 KT  35 MPH...POST-TROP/EXTRATROP
 96H  04/1200Z...DISSIPATED
 
$$
Forecaster Papin

ISAAC storm path from NHC

Time Speed Location Status
50 knots 44.8, -29.1 POST-TROPICAL CYCLONE
45 knots 46.0, -26.2 POST-TROPICAL CYCLONE
40 knots 47.6, -23.6 POST-TROPICAL CYCLONE
35 knots 49.3, -22.0 POST-TROPICAL CYCLONE
35 knots 50.6, -20.7 POST-TROPICAL CYCLONE
35 knots 52.0, -19.3 POST-TROPICAL CYCLONE
30 knots 54.0, -17.5 POST-TROPICAL CYCLONE
0 knots translation missing: en.DISSIPATED


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