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!!!

Iota – Final Advisory Issued 11-18-2020 – 2020 Hurricane Season

ATTENTION: The NHC has issued it's last advisory on Iota as of 11-18-2020. All Graphics and Information on this page will eventually cease to update.

NHC Important Links:
NHC Discussion / NHC Public Advisory / NHC Forecast / Wind Probs / Storm Archive
Storm Tracking Important Links:
FSU Track Probability - NOAA Tracker - Albany Tracker - Navy NRL Page - HFIP Products - TropicalAtlantic Tracker - NCAR Guidance Page - CyclonicWX Tracker Products - CIMSS Tracker - TropicalTidbits Tracker - UWM Tracker - SFWMD Models

NHC Public Advisory on Iota

Wed, 18 Nov 2020 14:40:59 +0000: Atlantic Remnants Of Iota Advisory Number 21 - Atlantic Remnants Of Iota Advisory Number 21

000
WTNT31 KNHC 181440
TCPAT1

BULLETIN
Remnants Of Iota Advisory Number 21
NWS National Hurricane Center Miami FL AL312020
900 AM CST Wed Nov 18 2020

...IOTA DISSIPATES OVER CENTRAL AMERICA...
...HEAVY RAIN THREAT CONTINUES...

SUMMARY OF 900 AM CST...1500 UTC...INFORMATION
----------------------------------------------
LOCATION...13.8N 89.5W
ABOUT 20 MI...35 KM WNW OF SAN SALVADOR EL SALVADOR
MAXIMUM SUSTAINED WINDS...30 MPH...45 KM/H
PRESENT MOVEMENT...W OR 270 DEGREES AT 12 MPH...19 KM/H
MINIMUM CENTRAL PRESSURE...1006 MB...29.71 INCHES

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

DISCUSSION AND OUTLOOK
----------------------
At 900 AM CST (1500 UTC), the remnants of Iota were located near
latitude 13.8 North, longitude 89.5 West. The remnants are moving
toward the west near 12 mph (19 km/h), and this general motion is
expected to continue today.

Maximum sustained winds are near 30 mph (45 km/h) with higher gusts.

The estimated minimum central pressure is 1006 mb (29.71 inches).

HAZARDS AFFECTING LAND
----------------------
Key messages for Iota can be found in the Tropical Cyclone
Discussion under AWIPS header MIATCDAT1, WMO header WTNT41 KNHC
and on the web at www.hurricanes.gov/text/MIATCDAT1.shtml.

RAINFALL: The remnants of Iota are expected to produce the
following additional rainfall accumulations through Thursday:

Portions of Honduras, Guatemala, southern Belize: 4 to 8 inches (100
to 200 mm), with isolated maximum totals of 12 inches (300 mm).

Portions of Nicaragua and El Salvador: 2 to 4 inches (50 to 100 mm),
with isolated maximum totals of 6 inches (150 mm).

This rainfall will lead to significant, life-threatening flash
flooding and river flooding, along with mudslides in areas of higher
terrain.

SURF: Swells generated by Iota will affect much of the coast of
Central America and the Yucatan Peninsula during the next day or so.
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. For additional information on the remnants,
please see High Seas Forecasts issued by the National Weather
Service, under AWIPS header NFDHSFEPI, WMO header FZPN02 KWBC, and
on the web at ocean.weather.gov/shtml/NFDHSFEPI.php

$$
Forecaster Pasch

NHC Forecast Advisory on Iota

Sat, 10 Oct 2020 14:41:27 +0000: Atlantic Tropical Depression DELTA Forecast/Adviso... - Atlantic Tropical Depression DELTA Forecast/Advisory Number 24 NWS NATIONAL Hurricane CENTER MIAMI FL AL262020 1500 UTC SAT OCT 10 2020 THERE ARE NO COASTAL WATCHES AND WARNINGS IN EFFECT. TROPICAL DEPRESSION CENTER LOCATED NEAR 33.1N 90.8W AT 10/1500Z POSITION ACCURATE WITHIN 30 NM PRESENT MOVEMENT TOWARD THE NORTHEAST OR 35 DEGREES AT 14 KT ESTIMATED MINIMUM CENTRAL PRESSURE 994 MB MAX SUSTAINED WINDS 30 KT WITH GUSTS TO 40 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 33.1N 90.8W AT 10/1500Z AT 10/1200Z CENTER WAS LOCATED NEAR 32.6N 91.2W FORECAST VALID 11/0000Z 34.1N 89.3W...INLAND MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 11/1200Z 35.5N 87.4W...Post-TROP/REMNT LOW MAX WIND 20 KT...GUSTS 30 KT. FORECAST VALID 12/0000Z 37.5N 84.8W...POST-TROP/REMNT LOW MAX WIND 20 KT...GUSTS 30 KT. FORECAST VALID 12/1200Z 39.7N 82.0W...POST-TROP/REMNT LOW MAX WIND 20 KT...GUSTS 30 KT. FORECAST VALID 13/0000Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 33.1N 90.8W THIS IS THE LAST FORECAST/Advisory ISSUED BY THE NATIONAL HURRICANE CENTER ON THIS SYSTEM. FUTURE INFORMATION ON THIS SYSTEM CAN BE FOUND IN PUBLIC ADVISORIES ISSUED BY THE WEATHER PREDICTION CENTER BEGINNING AT 2100Z, UNDER AWIPS HEADER TCPAT1, WMO HEADER WTNT31 KWNH, AND ON THE WEB AT HTTP://WWW.WPC.NCEP.NOAA.GOV. $$ FORECASTER BEVEN

000
WTNT21 KNHC 101441
TCMAT1

TROPICAL DEPRESSION DELTA FORECAST/ADVISORY NUMBER 24
NWS NATIONAL HURRICANE CENTER MIAMI FL AL262020
1500 UTC SAT OCT 10 2020

THERE ARE NO COASTAL WATCHES AND WARNINGS IN EFFECT.

TROPICAL DEPRESSION CENTER LOCATED NEAR 33.1N 90.8W AT 10/1500Z
POSITION ACCURATE WITHIN 30 NM

PRESENT MOVEMENT TOWARD THE NORTHEAST OR 35 DEGREES AT 14 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 994 MB
MAX SUSTAINED WINDS 30 KT WITH GUSTS TO 40 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 33.1N 90.8W AT 10/1500Z
AT 10/1200Z CENTER WAS LOCATED NEAR 32.6N 91.2W

FORECAST VALID 11/0000Z 34.1N 89.3W...INLAND
MAX WIND 25 KT...GUSTS 35 KT.

FORECAST VALID 11/1200Z 35.5N 87.4W...POST-TROP/REMNT LOW
MAX WIND 20 KT...GUSTS 30 KT.

FORECAST VALID 12/0000Z 37.5N 84.8W...POST-TROP/REMNT LOW
MAX WIND 20 KT...GUSTS 30 KT.

FORECAST VALID 12/1200Z 39.7N 82.0W...POST-TROP/REMNT LOW
MAX WIND 20 KT...GUSTS 30 KT.

FORECAST VALID 13/0000Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 33.1N 90.8W

THIS IS THE LAST FORECAST/ADVISORY ISSUED BY THE NATIONAL HURRICANE
CENTER ON THIS SYSTEM. FUTURE INFORMATION ON THIS SYSTEM CAN BE
FOUND IN PUBLIC ADVISORIES ISSUED BY THE WEATHER PREDICTION CENTER
BEGINNING AT 2100Z, UNDER AWIPS HEADER TCPAT1, WMO HEADER
WTNT31 KWNH, AND ON THE WEB AT HTTP://WWW.WPC.NCEP.NOAA.GOV.

$$
FORECASTER BEVEN

NHC Discussion on Iota

Wed, 18 Nov 2020 14:44:43 +0000: Atlantic Remnants Of Iota Discussion Number 21 - Atlantic Remnants Of Iota Discussion Number 21

777
WTNT41 KNHC 181444
TCDAT1

Remnants Of Iota Discussion Number 21
NWS National Hurricane Center Miami FL AL312020
900 AM CST Wed Nov 18 2020

Although the system still has broad mid-level rotation, synoptic
observations from Central America show that the surface circulation
of Iota has dissipated. Its remnants are located somewhere near El
Salvador.

Although the remnants of Iota are likely to move into the eastern
North Pacific during the next day or so, the global models do not
show regeneration of the system over that basin.

Iota is still expected to produce very serious flash flooding and
mudslides, with potentially catastrophic effects, over
portions of Central America.

This is the last advisory issued by the National Hurricane Center
on Iota.

Key Messages:

1. Life-threatening flash flooding and river flooding is expected
through Thursday across portions of Central America due to heavy
rainfall from the remnants of Iota. Flooding and mudslides across
portions of Honduras, Nicaragua and Guatemala could be exacerbated
by saturated soils in place, resulting in significant to
potentially catastrophic impacts.

FORECAST POSITIONS AND MAX WINDS

INIT 18/1500Z 13.8N 89.5W 25 KT 30 MPH...REMNANTS OF IOTA
12H 19/0000Z...DISSIPATED

$$
Forecaster Pasch

Facebook Comments

Copyright © 2013-2021 Track The Tropics – Spaghetti Models – Hurricane Season 2020 - All Rights Reserved - SiteMap
DISCLAIMER: This website, TrackTheTropics.com, is for general information only and not to be used for any official forecast. This site is made to provide as many useful links and information possible for hurricane tracking and knowledge. Please first consult the NWS and NHC before making decisions on any kind of weather event. We are also not responsible for inaccurate maps or data on this page.

Powered by WordPress & Atahualpa

57 queries. 1.718 seconds.