Saffir-Simpson Hurricane Scale

Category	Wind Speed	Storm Surge
	mph	ft
5	≥157	>18
4	130–156	13–18
3	111–129	9–12
2	96–110	6–8
1	74–95	4–5
Additional Classifications
Tropical Storm	39–73	0–3
Tropical Depression	0–38	0

The Saffir-Simpson Hurricane Scale is a classification used for most Western Hemisphere tropical cyclones that exceed the intensities of "tropical depressions" and "tropical storms", and thereby become hurricanes. Source: Intellicast

Hurricane Season 101

The official Atlantic Basin Hurricane Season runs from June 1st to November 30th. A tropical cyclone is a warm-core, low pressure system without any “front” attached. It develops over tropical or subtropical waters, and has an organized circulation. Depending upon location, tropical cyclones have different names around the world. The Tropical Cyclones we track in the Atlantic basin are called Tropical Depressions, Tropical Storms and Hurricanes! Atlantic Basin Tropical Cyclones are classified as follows: Tropical Depression: Organized system of clouds and thunderstorms with defined surface circulation and max sustained winds of 38 mph or less. Tropical Storm: Organized system of strong thunderstorms with a defined surface circulation and maximum sustained winds of 39-73 mph. Hurricane: Intense tropical weather system of strong thunderstorms with a well-defined surface circulation. A Hurricane has max sustained winds of 74 mph or higher!

The difference between Tropical Storm and Hurricane Watches, Warnings, Advisories and Outlooks

Warnings:Listen closely to instructions from local officials on TV, radio, cell phones or other computers for instructions from local officials.Evacuate immediately if told to do so.

Storm Surge Warning: There is a danger of life-threatening inundation from rising water moving inland from the shoreline somewhere within the specified area. This is generally within 36 hours. If you are under a storm surge warning, check for evacuation orders from your local officials.
Hurricane Warning: Hurricane conditions (sustained winds of 74 mph or greater) are expected somewhere within the specified area. NHC issues a hurricane warning 36 hours in advance of tropical storm-force winds to give you time to complete your preparations. All preparations should be complete. Evacuate immediately if so ordered.
Tropical Storm Warning: Tropical storm conditions (sustained winds of 39 to 73 mph) are expected within your area within 36 hours.
Extreme Wind Warning: Extreme sustained winds of a major hurricane (115 mph or greater), usually associated with the eyewall, are expected to begin within an hour. Take immediate shelter in the interior portion of a well-built structure.

Please note that hurricane and tropical storm watches and warnings for winds on land as well as storm surge watches and warnings can be issued for storms that the NWS believes will become tropical cyclones but have not yet attained all of the characteristics of a tropical cyclone (i.e., a closed low-level circulation, sustained thunderstorm activity, etc.). In these cases, the forecast conditions on land warrant alerting the public. These storms are referred to as “potential tropical cyclones” by the NWS. Hurricane, tropical storm, and storm surge watches and warnings can also be issued for storms that have lost some or all of their tropical cyclone characteristics, but continue to produce dangerous conditions. These storms are called “post-tropical cyclones” by the NWS. Watches: Listen closely to instructions from local officials on TV, radio, cell phones or other computers for instructions from local officials. Evacuate if told to do so.

Storm Surge Watch: Storm here is a possibility of life-threatening inundation from rising water moving inland from the shoreline somewhere within the specified area, generally within 48 hours. If you are under a storm surge watch, check for evacuation orders from your local officials.
Hurricane Watch: Huriricane conditions (sustained winds of 74 mph or greater) are possible within your area. Because it may not be safe to prepare for a hurricane once winds reach tropical storm force, The NHC issues hurricane watches 48 hours before it anticipates tropical storm-force winds.
Tropical Storm Watch: Tropical storm conditions (sustained winds of 39 to 73 mph) are possible within the specified area within 48 hours.

Advisories:

Tropical Cyclone Public Advisory:The Tropical Cyclone Public Advisory contains a list of all current coastal watches and warnings associated with an ongoing or potential tropical cyclone, a post-tropical cyclone, or a subtropical cyclone. It also provides the cyclone position, maximum sustained winds, current motion, and a description of the hazards associated with the storm.
Tropical Cyclone Track Forecast Cone:This graphic shows areas under tropical storm and hurricane watches and warnings, the current position of the center of the storm, and its predicted track. Forecast uncertainty is conveyed on the graphic by a “cone” (white and stippled areas) drawn such that the center of the storm will remain within the cone about 60 to 70 percent of the time. Remember, the effects of a tropical cyclone can span hundreds of miles. Areas well outside of the cone often experience hazards such as tornadoes or inland flooding from heavy rain.

Outlooks:

Tropical Weather Outlook:The Tropical Weather Outlook is a discussion of significant areas of disturbed weather and their potential for development during the next 5 days. The Outlook includes a categorical forecast of the probability of tropical cyclone formation during the first 48 hours and during the entire 5-day forecast period. You can also find graphical versions of the 2-day and 5-day Outlook here

Be sure to read up on tons of more information on Hurricane knowledge, preparedness, statistics and history under the menu on the left hand side of the page! Here are your 2020 Hurricane Season Names: Arthur, Bertha, Cristobal, Dolly, Edouard, Fay, Gonzalo, Hanna, Isaias, Josephine ,Kyle, Laura, Marco, Nana, Omar, Paulette, Rene, Sally, Teddy, Vicky and Wilfred!!!

Hurricane Epsilon – 2020 Hurricane Season

NHC Public Advisory on Epsilon

Mon, 26 Oct 2020 02:34:17 +0000: Atlantic Post-Tropical Cyclone Epsilon Advisory Number 29 - Atlantic Post-Tropical Cyclone Epsilon Advisory Number 29

000
WTNT32 KNHC 260234
TCPAT2

BULLETIN
Post-Tropical Cyclone Epsilon Advisory Number 29
NWS National Hurricane Center Miami FL AL272020
300 AM GMT Mon Oct 26 2020

...EPSILON BECOMES A POWERFUL POST-TROPICAL CYCLONE OVER THE
NORTH ATLANTIC...
...THIS WILL BE THE LAST NHC ADVISORY ON EPSILON...

SUMMARY OF 300 AM GMT...0300 UTC...INFORMATION
----------------------------------------------
LOCATION...48.6N 38.8W
ABOUT 675 MI...1090 KM ENE OF CAPE RACE NEWFOUNDLAND
MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/H
PRESENT MOVEMENT...NE OR 55 DEGREES AT 46 MPH...74 KM/H
MINIMUM CENTRAL PRESSURE...968 MB...28.59 INCHES

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

DISCUSSION AND OUTLOOK
----------------------
At 300 AM GMT (0300 UTC), the center of Post-Tropical Cyclone
Epsilon was located near latitude 48.6 North, longitude 38.8 West.
The post-tropical cyclone is moving toward the northeast near 46 mph
(74 km/h), and this general motion is expected to continue through
Monday night.

Maximum sustained winds are near 70 mph (110 km/h) with higher
gusts. Little change in strength is forecast during the next day
or so before the post-tropical cyclone is absorbed by a large
extratropical low pressure system on Monday night or early Tuesday.

Tropical-storm-force winds extend outward up to 450 miles (720 km)
from the center.

The estimated minimum central pressure is 968 mb (28.59 inches).

HAZARDS AFFECTING LAND
----------------------
SURF: Large swells generated by Epsilon will affect Bermuda, the
Bahamas, the Greater Antilles, the Leeward Islands, portions of the
east coast of the United States, and Atlantic Canada through Monday.
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 Epsilon. 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 Reinhart/Zelinsky

NHC Forecast Advisory on Epsilon

Mon, 26 Oct 2020 02:33:14 +0000: Atlantic Post-Tropical Cyclone EPSILON Forecast/Ad... - Atlantic Post-Tropical Cyclone EPSILON Forecast/Advisory Number 29 NWS NATIONAL Hurricane CENTER MIAMI FL AL272020 0300 UTC MON OCT 26 2020 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. POST-TROPICAL Cyclone CENTER LOCATED NEAR 48.6N 38.8W AT 26/0300Z POSITION ACCURATE WITHIN 45 NM PRESENT MOVEMENT TOWARD THE NORTHEAST OR 55 DEGREES AT 40 KT ESTIMATED MINIMUM CENTRAL PRESSURE 968 MB MAX SUSTAINED WINDS 60 KT WITH GUSTS TO 75 KT. 50 KT....... 90NE 180SE 180SW 30NW. 34 KT.......240NE 390SE 360SW 330NW. 12 FT SEAS..600NE 720SE 900SW 360NW. 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 48.6N 38.8W AT 26/0300Z AT 26/0000Z CENTER WAS LOCATED NEAR 47.3N 41.3W FORECAST VALID 26/1200Z 52.1N 30.3W...POST-TROP/EXTRATROP MAX WIND 60 KT...GUSTS 75 KT. 50 KT... 90NE 150SE 150SW 60NW. 34 KT...270NE 420SE 420SW 390NW. FORECAST VALID 27/0000Z 57.0N 24.0W...POST-TROP/EXTRATROP MAX WIND 55 KT...GUSTS 65 KT. 50 KT... 90NE 120SE 120SW 90NW. 34 KT...300NE 450SE 450SW 420NW. FORECAST VALID 27/1200Z...ABSORBED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 48.6N 38.8W THIS IS THE LAST FORECAST/Advisory ISSUED BY THE NATIONAL HURRICANE CENTER ON EPSILON. 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 REINHART/ZELINSKY

000
WTNT22 KNHC 260233
TCMAT2

POST-TROPICAL CYCLONE EPSILON FORECAST/ADVISORY NUMBER 29
NWS NATIONAL HURRICANE CENTER MIAMI FL AL272020
0300 UTC MON OCT 26 2020

THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.

POST-TROPICAL CYCLONE CENTER LOCATED NEAR 48.6N 38.8W AT 26/0300Z
POSITION ACCURATE WITHIN 45 NM

PRESENT MOVEMENT TOWARD THE NORTHEAST OR 55 DEGREES AT 40 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 968 MB
MAX SUSTAINED WINDS 60 KT WITH GUSTS TO 75 KT.
50 KT....... 90NE 180SE 180SW 30NW.
34 KT.......240NE 390SE 360SW 330NW.
12 FT SEAS..600NE 720SE 900SW 360NW.
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 48.6N 38.8W AT 26/0300Z
AT 26/0000Z CENTER WAS LOCATED NEAR 47.3N 41.3W

FORECAST VALID 26/1200Z 52.1N 30.3W...POST-TROP/EXTRATROP
MAX WIND 60 KT...GUSTS 75 KT.
50 KT... 90NE 150SE 150SW 60NW.
34 KT...270NE 420SE 420SW 390NW.

FORECAST VALID 27/0000Z 57.0N 24.0W...POST-TROP/EXTRATROP
MAX WIND 55 KT...GUSTS 65 KT.
50 KT... 90NE 120SE 120SW 90NW.
34 KT...300NE 450SE 450SW 420NW.

FORECAST VALID 27/1200Z...ABSORBED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 48.6N 38.8W

THIS IS THE LAST FORECAST/ADVISORY ISSUED BY THE NATIONAL HURRICANE
CENTER ON EPSILON. 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 REINHART/ZELINSKY

NHC Discussion on Epsilon

Mon, 26 Oct 2020 02:36:14 +0000: Atlantic Post-Tropical Cyclone Epsilon Discussion Number 29 - Atlantic Post-Tropical Cyclone Epsilon Discussion Number 29

000
WTNT42 KNHC 260236
TCDAT2

Post-Tropical Cyclone Epsilon Discussion Number 29
NWS National Hurricane Center Miami FL AL272020
300 AM GMT Mon Oct 26 2020

Recent satellite-derived wind data indicate that Epsilon no longer
has the structure of a tropical cyclone. The low-level circulation
is stretched out along a north-south axis, with an area of lighter
winds noted near and north of the ill-defined center. Furthermore,
infrared cloud tops have warmed over the past several hours as
convection wanes near the center. Therefore, Epsilon has been
declared a post-tropical cyclone, and this will be the last NHC
advisory for the system.

A partial 22Z ASCAT-A overpass showed at least 55-kt winds in the
southern semicircle of the cyclone, which supports keeping the
initial intensity at 60 kt. Post-tropical Epsilon is firmly embedded
in the mid-latitude westerlies, and the cyclone will continue racing
northeastward at around 35-40 kt for the next day or so. The cyclone
will remain a very powerful and dangerous storm until it is absorbed
by another large extratropical low pressure system over the
northeastern Atlantic. The global models remain in very good
agreement with this scenario, and no notable changes were made to
the official NHC forecast.

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 26/0300Z 48.6N 38.8W 60 KT 70 MPH...POST-TROPICAL
12H 26/1200Z 52.1N 30.3W 60 KT 70 MPH...POST-TROP/EXTRATROP
24H 27/0000Z 57.0N 24.0W 55 KT 65 MPH...POST-TROP/EXTRATROP
36H 27/1200Z...ABSORBED

$$
Forecaster Reinhart/Zelinsky

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