Atlantic Hurricane Season General - /pol/

NHC Tropical Surface Analysis


All times given in EDT.


Product Issue Times (AM & PM)
Public Advisory 5,11
Intermediate Advisory 2,8
Forecast Advisory 5,11
Forecast Discussion 5,11
Tropical Weather Outlook 2,8
Graphical Advisories 5,11
Graphical Tropical Weather Outlook 2,8


Model / Valid Time 00Z 06Z 12Z 18Z
GFS 1:00 AM 7:00 AM 1:00 PM 7:00 PM
NAM 10:30 PM 4:30 AM 11:00 AM 4:45 PM
NAVGEM 2:00 AM 2:00 PM
ECMWF 1:45 AM 6:45 AM 1:45 PM 6:45 PM
UKMET 12:30 AM 12:30 PM
GEM 1:00 AM 1:00 PM
ICON 11:00 PM 5:00 AM 11:00 AM 5:00 PM

Model runtimes


NOAA Publications

National Hurricane Center - Page for the Atlantic Basin

NWS Southern Region Tropical Webpage


Sam Is Now A Major Hurricane But Isn't Likely To Hit Land

Hurricane Sam is a Category 4 hurricane churning in the Central Atlantic

Hurricane Sam 2021 now a Category 4 but still far from land

Hurricane Sam strengthens into major Category 4 storm



NHC Analysis Tools

SPC Mesoanalysis Tool for the Gulf Coast

NOAA Tropical Atlantic satellite imagery

NOAA Ocean Winds (ASCAT)

NOAA Sea Surface Temperatures

NOAA Tropical hurricane models

NOAA Doppler Radar

NOAA Tides and Currents


ESRL tropical products

Finite Icosahedral Model

ASCAT satellite winds

National Data Buoy Center

Other US Government

US Naval Research Laboratory - Tropical Cyclone page

Fleet Numerical Meteorology and Oceanography Center - tropical models


UCAR Real Time Guidance

Plymouth State Weather Center - Tropical page

College of DuPage Satellite Images

GOES & Himawari Satellite Images

ECMWF Models

Florida State University model page

Rutgers University model page

University of Wisconsin Tropical Cyclone page

Hurricane Forecast Improvement Project (HFIP)


Windytv Live Map

Tropical Tidbits

Track the Tropics

Wind Alert

Mike's Weather Page


Red Cross

Tropical Atlantic

Hurricane City

Weather Underground


Lightning Map


Haby's Tropical Weather notes

How to read weather maps

NHC Glossary

NHC Tropical Cyclone Text Product Descriptions

NOAA Flood Definitions

NOAA brief explanation of hurricane physics

More detailed scientific description from MIT

National Hurricane Operations Plan

Saffir-Simpson Hurricane Scale table

Beaufort Wind Scale table

What to Do to Your Home Before Evacuating Ahead of a Storm

USDA Food Safety Tips

A Consumer's Guide To Food Safety: SEVERE STORMS & HURRICANES

FDA Hurricane Leaflet

Hurricane & Flood Before and After Handbook

NHC Hurricane Preparedness

NWS Lake Charles Hurricane Preparedness Guide

NWS Hurricane Guide


Use regular household bleach, which the only active ingredient is ‘sodium hypochlorite’.

Having said that, one best way to purify water for drinking is to boil it for 1 minute.
Once the water has reached a rolling boil, it has become safe to drink.

Note that if the water source had been contaminated with chemicals, boiling it or otherwise treating it will NOT assure that the chemical is removed.

Know your water source as best you can.

UPDATE: For many years, regular bleach contained a concentration of 5.25% – 6% sodium hypochlorite. Newer ‘regular’ liquid bleach may contain a concentration of approximately 8% sodium hypochlorite (about a third more than the original bleach formula).</br></br>
Mix the following amount of bleach with water, and wait 30 minutes for it to work. The water should have just a ‘hint’ of chlorine smell.

(5-6% Sodium Hypochlorite)
numbers are ’rounded’

1 Quart water, 2 drops bleach
1 Gallon water, 8 drops bleach
5 Gallons water, 1/2 teaspoon bleach
10 Gallons water, 1 teaspoon bleach
50 Gallons water, 5 teaspoons bleach

(8.25% Sodium Hypochlorite)
numbers are ’rounded’

1 Quart water, 1 drop bleach
1 Gallon water, 5 drops bleach
5 Gallons water, 3/8 teaspoon bleach (or three 1/8th teaspoons)
10 Gallons water, 3/4 teaspoon bleach
50 Gallons water, 3.5 teaspoons bleach


For those of you that are evacuating from the coast, I just heard a great tip. It's called the one cup tip. You put a cup of water in your freezer. Freeze it solid and then put a quarter on top of it and leave it in your freezer. That way when you come back after you've been evacuated you can tell if your food went completely bad and just refroze or if it stayed Frozen while you were gone. If the quarter has fallen to the bottom of the cup that means all the food defrosted and you should throw it out. But if the quarter is either on the top or in the middle of the cup then your food may still be ok. It would also be a great idea to leave this in your freezer all the time and if you lose power for any reason you will have this tip to fall back on. If you don't feel good about your food, just throw it out.

Sheila Pulanco Russell, Lumberton NC

Forecaster Weatherwax

Pub: 27 Aug 2020 00:22 UTC
Edit: 25 Sep 2021 22:30 UTC
Views: 3512