Nassau County, NY
Alerts
Alerts are listed in order of start time and level of severity. Click on the alert title to read details for each alert.
In effect from Thursday 06/11 1:34 PM EDT – Friday 06/12 8:00 PM EDT
Issued by NWS Upton NY
What
Heat index values around 100 expected.
Where
In Connecticut, Northern Fairfield, Northern Middlesex, Northern New Haven, Southern Fairfield, and Southern New Haven Counties. In New York, Northern Nassau, Northwest Suffolk, Southern Nassau, and Southwest Suffolk Counties.
When
Until 8 PM EDT Friday.
Impacts
Hot temperatures and high humidity may cause heat illnesses.
What to Do
A Heat Advisory is issued when the combination of heat and humidity is expected to make it feel like it is 95 to 99 degrees for two or more consecutive days, or 100 to 104 degrees for any length of time.
Seniors and those with chronic health problems or mental health conditions are at an increased risk. Homes without air conditioning can be much hotter than outdoor temperatures.
Use air conditioning to stay cool at home or go to a place that has air conditioning. If you don't have home air conditioning, continue to seek out cool spaces each day as long as it remains hot, and for a few days after if your home is still hot. Check on vulnerable friends, family members and neighbors.
To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! In cases of heat stroke call 9 1 1.
Areas Impacted
- Northern Fairfield
- Northern New Haven
- Northern Middlesex
- Southern Fairfield
- Southern New Haven
- Northwest Suffolk
- Southwest Suffolk
- Northern Nassau
- Southern Nassau
Tips to Stay Safe
A Heat Advisory means dangerous heat conditions are happening now or soon. Take action before, during and after the heat to stay safe.
- Stay in air-conditioned spaces if possible. Find cooling centers or places with AC in your community that you can go to, like libraries or shopping malls.
- Stay hydrated and stock up on clean drinking water to get you through multiple days of heat.
- Reschedule outdoor activities for cooler times of the day, and take breaks in the shade or air conditioning.
- Cover windows with curtains or shades, or use window reflectors designed to reflect heat back outside.
- Check on friends, family, and neighbors, especially those who do not have air conditioning or spend much of their time alone.
Make sure you know the signs of heat-related illness and how to respond.
In effect from Wednesday 06/10 4:07 PM EDT – Thursday 06/11 11:00 PM EDT
Issued by NWS Upton NY
The New York State Department of Environmental Conservation has issued an Air Quality Health Advisory for the following counties:
Nassau and Suffolk.
from 11 AM to 11 PM EDT Thursday.
Air quality levels in outdoor air are predicted to be greater than an Air Quality Index value of 100 for the pollutant of Ground Level Ozone. The Air Quality Index, or AQI, was created as an easy way to correlate levels of different pollutants to one scale. The higher the AQI value, the greater the health concern.
When pollution levels are elevated, the New York State Department of Health recommends that individuals consider limiting strenuous outdoor physical activity to reduce the risk of adverse health effects. People who may be especially sensitive to the effects of elevated levels of pollutants include the very young, and those with preexisting respiratory problems such as asthma or heart disease. Those with symptoms should consider consulting their personal physician.
For additional information, please visit the New York State Department of Environmental Conservation website at, https://on.ny.gov/nyaqi , or call the Air Quality Hotline at 1 800 5 3 5, 1 3 4 5.
Areas Impacted
- Northwest Suffolk
- Northeast Suffolk
- Southwest Suffolk
- Southeast Suffolk
- Northern Nassau
- Southern Nassau
Tips to Stay Safe
When an Air Quality Alert is active for your location:
- Check the air quality levels in your area at airnow.gov.
- Limit your time outdoors, especially if you are at higher risk. This includes seniors, children, or those with asthma or other health conditions.
In effect from Thursday 06/11 2:38 PM EDT – Friday 06/12 2:45 PM EDT
Issued by NWS Upton NY
The New York State Department of Environmental Conservation has issued an Air Quality Health Advisory for the following counties:
Nassau and Suffolk.
until 11 PM EDT this evening.
Air quality levels in outdoor air are predicted to be greater than an Air Quality Index value of 100 for the pollutant of Ground Level Ozone. The Air Quality Index, or AQI, was created as an easy way to correlate levels of different pollutants to one scale. The higher the AQI value, the greater the health concern.
When pollution levels are elevated, the New York State Department of Health recommends that individuals consider limiting strenuous outdoor physical activity to reduce the risk of adverse health effects. People who may be especially sensitive to the effects of elevated levels of pollutants include the very young, and those with preexisting respiratory problems such as asthma or heart disease. Those with symptoms should consider consulting their personal physician.
For additional information, please visit the New York State Department of Environmental Conservation website at, https://on.ny.gov/nyaqi , or call the Air Quality Hotline at 1 800 5 3 5, 1 3 4 5.
Areas Impacted
- Northwest Suffolk
- Northeast Suffolk
- Southwest Suffolk
- Southeast Suffolk
- Northern Nassau
- Southern Nassau
Tips to Stay Safe
When an Air Quality Alert is active for your location:
- Check the air quality levels in your area at airnow.gov.
- Limit your time outdoors, especially if you are at higher risk. This includes seniors, children, or those with asthma or other health conditions.
Briefing
From the Forecaster
Key Messages
Created by the NWS New York City WFO
Hot and humid weather continue on Friday. Heat indices will rise to around 100 degrees in the afternoon. There is a slight risk of severe thunderstorms with damaging wind gusts in excess of 58 mph. There is also a localized risk for flash flooding. Some relief in humidity is expected for Saturday.
Seven-day Weather Risk Overview
The graphic shows the daily risk summary for 7 days. Daily risk is based on highest risk factor for that day.
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