National Weather Service United States Department of Commerce

Overview

This is the home page for emergency managers to do a self briefing. 

For information on a particular hazard, just click on the appropriate link above.

Active Watches/Warnings/Statements
 

 

 

 

(Click image to enlarge)

Please note that this general weather briefing slide above is intended only to assist in determining the appropriate web page link to get additional information.  For high-impact events, more detailed information will be provided via traditional decision support services.

Click here for Watch, Warning, and Advisory Criteria

3 Day Precipitation Forecast

2 Day QPF Forecast

Map displays 2 Day forecasted precipitation amounts.

Map is updated every time the forecaster issues a new forecast.

Observed Precipitation

Maximum Wave Height

Map displays 3-Day Maximum Wave Height. Map is updated every time the forecaster issues a new forecast.

       
Flash Flood Guidance

Portland Tide Gage

Image displays observed and predicted tide levels for the Portland Tide gage.

Flash Flood Guidance

Fort Point Tide Gage

Image displays observed and predicted tide levels for the Fort Point Tide gage.

       
Hazards

Saco Tide Gage

Image displays observed and predicted tide levels for the Hampton Bay Tide gage.

24hr Forecasted QPF

24Hr QPF Forecast

Map displays 24hr forecasted precipitation amounts.

Map is updated every time the forecaster issues a new forecast.

       
Hazards

Probabilistic Hurricane Storm Surge (with tide)

Map displays experimental storm surge (with tide) heights in feet above ground level with a 1 in 10 chance of being exceeded.

Hazards

Stevens SFAS Ensemble

Model ensemble forecast of water levels.

NH Drought Monitor

New Hampshire Drought Monitor

Map displays the USDA Drought Monitor for the state of New Hampshire.  Drought monitor is updated weekly every Thursday.

Maine Drought Monitor

Maine Drought Monitor

Map Displays the USDA Monitor for the state of Maine.  Drought monitor is updated weekly every Thursday

Drought Outlook

Drought Outlook

U.S. Monthly Drought Outlook displays the probability of drought development or improvement.  Outlook is updated monthly at the beginning of each month.

Evaporative Demand Drought Index

Evaporative Demand Drought Index

The EDDI maps display atmospheric evaporative demand anomalies across a timescale of interest relative to its climatology to indicate the spatial extent and severity of drought.

River Flow

USGS New Hampshire Water Conditions Map

Map displays USGS river gauge water flow compared to normal for the current time of year. 

River Flow

USGS Maine Water Conditions Map

Map displays USGS river gauge water flow compared to normal for the current time of year. 

 

Moisture Anomaly

Total Soil Moisture Anomaly

Map displays the total soil moisture anomaly for the past week and/or month.

NRCC Precipitation Anomaly

Northeast Regional Climate Center Precipitation Anomaly

Numerous maps that display monthly precipitation anomalies across the northeast.  

Precipitation Anomalies

NWS Precipitation Departure from Normal

Map displays quantitative precipitation estimates that can be displayed in monthly or weekly displays.  

CPC

Climate Prediction Center Long Range Outlooks

Maps display weekly and monthly precipitation outlooks.

Drought Information Statement

Local Drought Information Statement

Text based information product issued bi-weekly during active drought periods.

Northeast Regional Climate Center

Northeast DEWS Dashboard

Drought site run by the Northeast Regional Climate Center.

Spot Fire Weather Forecast Request

Request Procedures & User Instructions

Red Flag Event Criteria

1)  Forest fuel conditions dry enough to support dangerous fire behavior. This shall be coordinated with the New Hampshire Forest Protection Bureau, and the Maine Forest Service.
2)  Weather conditions which could result in dangerous fire behavior. Generally, this is caused by a combination of strong winds and low relative humidity.
Wind 10-15 mph 15-19 mph 20-29 mph >30 mph
RH 30% to 35%       W
RH 25% to 30%     W W
RH 20% to 25%   W W W
RH < 20% W W W W
Note: Both forest and weather conditions must be expected to issue a Red Flag Warning.

 

Fire Weather Watch is issued up to 72 hours in advance of expected onset of red flag criteria

 

Red Flag Warning is issued when red flag criteria will occur in 24 hours or less

 

24-hour Day 1 Minimum Relative Humidity

Day 1 Min RH

Map displays 24 hour minimum relative humidity values for Day 1.

Map is updated every time the forecaster issues a new forecast.

24 Hour Day 2 Minimum Relative Humidity
 

Day 2 Min RH

Map displays 24 hour minimum relative humidity values for Day 2.

Map is updated every time the forecaster issues a new forecast.


 

Storm Prediction Center Fire Outlook Day 1
Day 1 Fire Weather Discussion

Day 1 Outlook

The Day 1 Outlook covers the 24-hour period from 12Z on the morning of product issuance to 12Z the following morning, with the update covering the 19-hour period from 17Z at issuance to 12Z the following morning.

Storm Prediction Center Fire Outlook Day 2Day 2 Fire Weather Discussion

Day 2 Outlook

The Day 2 Outlook covers the following 24-hour period after Day 1 out to 48 hours. The Day 2 Fire Weather Outlook is scheduled for issuance at 10Z and is updated at 20Z.

Storm Prediction Center Fire Outlook Days 3-8Day 3-8 Fire Wx Discussion

Day 3-8 Outlook

The Day 3-8 Outlook covers the period of 48 to 192 hours from 12Z on the morning of product issuance. The Day 3-8 Fire Weather Outlook is scheduled for issuance at 22Z.

Short Range Ensemble Forecast (SREF) Products
use Firefox to view

Short-Range Ensemble Forecast (SREF)

Short-Range Ensemble Forecast  is produced by postprocessing the 21 members NCEP SREF plus the operational WRF-NAM for a total of 22 members. Special emphasis is placed on high-impact, mesoscale guidance including fire weather.

Weather Hazards MapHazards Assessment

Weather Hazards

Map displays active watch, warnings, advisories and short term forecasts in the lower 48 states. Map automatically refreshes every five minutes.

Loop of sea-level pressures and fronts through day 7

Surface Analysis

The Weather Prediction Center (WPC) produces surface maps which depicts the analysis of  highs, lows, fronts, troughs, outflow boundaries, squall lines, and drylines.
 

AHPS

River Forecast Points

Map displays river points in Maine and New Hampshire.  Just click on the point where you want a forecast.

Map is updated every time a new observation or forecast is generated.
Observed Precipitation

Observed Precipitation

Northeast River Forecast Center
Rain Gauge Totals.

Observed Precipitation Page

One Week Archive of Daily Precipitation Graphics

       
24hr Forecasted QPF

24Hr QPF Forecast

Map displays 24hr forecasted precipitation amounts.

Map is updated every time the forecaster issues a new forecast.

3 Day Precipitation Forecast

2 Day QPF Forecast

Map displays 2 Day forecasted precipitation amounts.

Map is updated every time the forecaster issues a new forecast.

       
Flash Flood Guidance

Flash Flood Guidance

Flash Flood Guidance is an estimate of the amount of rainfall required over a given area during a given duration to cause small streams to flood issued by Northeast River Forecast Center.

Flash Flood Guidance Graphics

Departure From Normal

Precipitation / Departure

The precipitation totals used in these graphics and the accompanying text products are from the 6-hourly county mean areal precipitation calculated for use in the NERFC's Community Hydrologic Prediction System.

Precipitation/Departure Graphics

       
Hazards

Weather Hazards

Map displays active watch, warnings, advisories and short term forecasts in the lower 48 states. Map automatically refreshes every five minutes.

Significant Flood Outlook

Significant River Flood Outlook

This Flood Outlook is intended to provide a general outlook for significant river flooding. It is not intended to depict all areas of minor flooding or small-scale events such as localized flooding and/or flash flooding.
       
Historical Streamflow

Historical Streamflow

Map of real-time streamflow compared to historical streamflow for the day of the year.

Snow Analyses

National Snow Analyses

Includes data on snow water equivalent, snow depth and more. The data can be view for a day or animated for a two week period or a seaon.

CONUS & Northeast

NERFC: Observed Snow Maps

Maine Cooperative Snow Survey

3 Day Max Apparant T

24 Hour Maximum Apparent Temperature

Map displays the 24 Hour maximum apparent temperatures. Map gets updated every time the NWS in Gray produces a new grid.

Max T

Day 1 Maximum Temperature

Map displays the maximum temperature for day one. Map gets updated every time the NWS in Gray produces a new grid.

       
Max T

Day 2 Maximum Temperature

Map displays the maximum temperature for day two. Map gets updated every time the NWS in Gray produces a new grid.

Max T

Day 3 Maximum Temperature

Map displays the maximum temperature for day three. Map gets updated every time the NWS in Gray produces a new grid.

       

Weather Hazards MapHazards Assessment

Weather Hazards

Map displays active watch, warnings, advisories and short term forecasts in the lower 48 states. Map automatically refreshes every five minutes.

Loop of sea-level pressures and fronts through day 7

Surface Analysis

The Weather Prediction Center (WPC) produces surface maps which depicts the analysis of  highs, lows, fronts, troughs, outflow boundaries, squall lines, and drylines.


 

3 Day Max Wave Height for Southern Maine and New Hampshire

3 Day Max Wave Height for southern Maine and New Hampshire

Map displays 3-Day Maximum Wave Height. Map is updated every time the forecaster issues a new forecast.

Observed Precipitation

Maximum Wave Height for Northeast

Map displays 3-Day Maximum Wave Height for the entire Northeast United States. Map is updated every time the forecaster issues a new forecast.

       
Observed Precipitation

Maximum Wind Gust

Map displays 3-Day Maximum Wind Gust for southern Maine and New Hampshire. Map is updated every time the forecaster issues a new forecast.

   
MaxSwell Today

Maximum Swells Today

Map displays today's maximum swell. Map is updated every time the forecaster issues a new forecast.

Minimum Visibility Today

Minimum Visibility Today

Map displays minimum visibility today. Map is updated every time the forecaster issues a new forecast.

MaxSwell Tonight

Maximum Swells Tonight

Map displays tonight's maximum swell. Map is updated every time the forecaster issues a new forecast.

Minimum Visibility Tonight

Minimum Visibility Tonight

Map displays minimum visibility tonight. Map is updated every time the forecaster issues a new forecast.

MaxSwell Tomorrow

Maximum Swells Tomorrow

Map displays tomorrow's maximum swell. Map is updated every time the forecaster issues a new forecast.

Minimum Visibility Tomorrow

Minimum Visibility Tomorrow

Map displays minimum visibility tomorrow. Map is updated every time the forecaster issues a new forecast.

 

MaxSwell Tomorrow Night

Maximum Swells Tomorrow Night

Map displays tomorrow night's maximum swell. Map is updated every time the forecaster issues a new forecast.

Minimum Visibility Tomorrow Night

Minimum Visibility Tomorrow Night

Map displays minimum visibility tomorrow night. Map is updated every time the forecaster issues a new forecast.

 

       

River Forecast Points

Map displays river points in Maine and New Hampshire.  Just click on the point where you want a forecast.

Map is updated every time a new observation or forecast is generated.
Estimated Ice Thickness

Latest Estimated River Ice thickness

Current estimated River ice thickness from Northeast River Forecast Center

2 Day Snow Forecast

Sea Surface Temperature

Observed SST from Satellite and buoy observations.

 

Storm Total Ice Forecast

72 hour Thawing degree hours

Shows next 72 hours of Total Thawing degree hours. 

Max T

Day 1 Maximum Temperature

Map displays the maximum temperature for day one. Map gets updated every time the NWS in Gray produces a new grid.

Min Temp Day 1

Minimum Temperature Day 1

Shows forecasted minimum temperature for the first day of the forecast.

Max T

Day 2 Maximum Temperature

Map displays the maximum temperature for day two. Map gets updated every time the NWS in Gray produces a new grid.

 

Min Temp Day 1

Minimum Temperature Day 2

Shows forecasted minimum temperature for the second day of the forecast.

Latest IR SatelliteImage

24 Hour Total Precipitation Forecast

Shows forecasted precipitation for the first day of the forecast.

Advanced Hydrologic Prediction Service Albany NY

3 Day Total Precipitation Forecast

Shows forecasted precipitation for the first three days of the forecast.

Snowpack temperature

Snowpack Temperature

Snowpack Temperature analysis

 

 

 

Snow Depth

Current Snow Depth

Shows current observed snow depth

Snow Water equivalent

Snow Water Equivalent

Snow Water Equivalent analysis

RFC Snow

Northeast River Forecast Center Snow 

 Observed Snow Maps

 

Maine Cooperative Snow Survey

Maine Cooperatuive Snow Survey

Latest Analysis from Maine Cooperative Snow Survey

       

Radar Gray ME

Radar

WSR-88D Doppler Radar

Gray | Boston | Burlington | Albany

Northeast Sector | Loop
Nationwide | Loop

 

Storm Prediction Center

Storm Prediction Center Overview Graphic / Map

Radar of the contiguous United States with Storm Prediction Center (SPC) products - Day 1.

SPC & its Products

Convection Outlooks 

Convective outlook  for organized severe thunderstorms over the contiguous United States.

Day 1 Outlook
Day 2 Outlook
Day 3 Outlook
Days 4-8 Outlook

Current Watches

About Severe Weather Watches

Current Watches

Graphic showing any severe thunderstorm and tornado watches which are in effect over the contiguous United States.

Severe & Tornado Watches

 

Latest Surface AnalysisNational Forecast Maps

Surface Analysis

The Weather Prediction Center (WPC) produces surface maps which depicts the analysis of  highs, lows, fronts, troughs, outflow boundaries, squall lines, and drylines.

Regional Observations
Rainfall Reports

Mesoscale Discussions

Mesoscale Discussions

Describe what is currently happening, what is expected in the next few hours, the meteorological reasoning for the forecast, and when / where SPC plans to issue the watch.

Current Mesoscale Discussions

Upper Air Sounding Map

Upper Air Soundings

Skew-T charts for all observed soundings across the United States. An archive of seven days of data is available.

Observed Soundings

Storm Reports

These reports are preliminary and are plotted and listed "as is" from NWS Local Storm Reports usually sent in realtime.

Gray's Preliminary Local Storm Reports

Upper Air Map

Forecast Tools

Including upper air mapsupper air soundingsmesoanalysis graphics, Short-Range Ensemble Forecast (SREF), Storm-Scale Ensemble of Opportunity (SSEO) and Compmap.

SPC Mesoscale Sectors
 

Mesoscale Analysis

Nine fixed regional sectors and a national sector provide hourly gridded mesoanalysis graphics across the CONUS.

Northeast Sector

NOAA's Atlantic Basin Hurricane Outlook

   

NHC Active Tropical Cyclones

Active Tropical Cyclones

Indicates areas/chances of tropical/sub-tropical cyclone development over the next 48  hours.

Atlantic Tropical Weather Discussion

NHC Data in GIS Formats

Graphical Tropical Weather Outlook
 

Graphical Tropical Weather Outlook

Highlights the location of areas of disturbed weather and shows the 48 hour probabilistic genesis potential.

Atlantic Tropical Weather Outlook

Tropical Cyclone Potential Impacts Graphics

Tropical Cyclone Potential Impacts

The TCI Graphics web site is an internet-based decision-support service consisting of at least four graphics: high wind impacts, coastal flooding impacts, inland flooding impacts, and tornado impacts.

Number of Tropical Cyclones per 100 YearsTropical Cyclone Names

NWS JetStream
Tropical Weather

Tropical Cyclone Climatology

The official hurricane season for the Atlantic Basin (the Atlantic Ocean, the Caribbean Sea, and the Gulf of Mexico) is from June 1st to November 30th.

The peak of the season is from mid-August to late October. However, deadly hurricanes can occur anytime in the hurricane season.

Tropical Cyclones - pdf brochure Updated April 2013

Tropical Atlantic Weather Map

Tropical Atlantic Weather Map

 

Surface analysis of weather features across the tropical Atlantic.

 Tropical Atlantic Infrared Satellite

Tropical Atlantic Satellite Imagery

 

NHC Aircraft Reconnaissance Plans & Data

Latest Surface Analysis Short Range Forecast Maps

Surface Analysis

The Weather Prediction Center (WPC) produces surface maps which depicts the analysis of  highs, lows, fronts, troughs, outflow boundaries, squall lines, and drylines.

NOAA nowCOAST - GIS mapping Portal

Radar Albany NY

Radar

WSR-88D Doppler Radar

Gray ME
Dual-Pol Data | Training
Northeast Sector | Loop
Southeast Sector | Loop
Nationwide
| Loop

 

Weather Hazards Map

National Forecast Maps

Weather Hazards

Map displays active watch, warnings, advisories and short term forecasts in the lower 48 states. Map automatically refreshes every five minutes.

Loop of sea-level pressures and fronts through day 7

National Data Buoy Center
 

National Data Buoy Center

NDBC provides hourly observations from a network of about 90 buoys and 60 Coastal Marine Automated Network stations. All stations measure wind (speed/direction/gust) and barometric pressure and air temperature.

Storm Surge

Along the coast, storm surge is often the greatest threat to life and property from a hurricane. The size of a storm surge for a particular location depends on a number of factors. Storm surge is very sensitive to the shape of the coast, and to changes in storm track, intensity, forward speed, and size. Tidal height at the time of maximum storm surge is an important factor.

Category

Winds
mph
Depression <39
T. Storm 39-73
Hurricane 1 74-95
Hurricane 2 96-110
Hurricane 3 111-129
Hurricane 4 130-156
Hurricane 5 > 156

Saffir-Simpson Hurricane Wind Scale

 

Category 1 to 5 rating based on a hurricane's sustained wind speed.

Effects and Damage Estimates

3 Day Max Apparant T

Today's Maximum Wind Gusts

Map displays today's maximum wind gusts as measure in mph. Map gets updated every time the NWS in Gray produces a new grid.

3 Day Max Apparant T

Tonight's Maximum Wind Gusts

Map displays today's maximum wind gusts as measure in mph. Map gets updated every time the NWS in Gray produces a new grid.

       
3 Day Max Apparant T

Tomorrow's Maximum Wind Gusts

Map displays tomorrow's maximum wind gusts as measure in mph. Map gets updated every time the NWS in Gray produces a new grid.

3 Day Max Apparant T

Tomorrow Night's Maximum Wind Gusts

Map displays tomorrow's maximum wind gusts as measure in mph. Map gets updated every time the NWS in Gray produces a new grid.

       

Weather Hazards Map

3 Hourly Loop of Wind Speed and Direction

Map displays a loop every three hours of the wind speed and direction out through 102 hours. Map gets updated every time the NWS in Gray produces a new grid.

 
 


 

Complete Winter Weather Page from the National Weather Service office in Gray, ME

 

GYX Storm Total Snow

Storm Total Snow and Probabilistic Snowfall Forecasts

Shows current Snow forecast and probabilities. The time is variable as it pertains to each specific storm.

Storm Total Ice Forecast

Storm Total Ice Forecast

Shows current Storm Total Snow forecast. The time is variable as it pertains to each specific storm.

2 Day Snow Forecast

2 Day Total Snow Forecast

Shows forecasted snowfall accumulations for the first two days of the forecast.

Snowfall / Rainfall Reports

Latest Snowfall Graphic

Latest Snowfall Graphic

Shows snowfall from the latest snowfall event across New Hampshire and southern Maine.
Latest IR SatelliteImage

24 Hour Total Precipitation Forecast

Shows forecasted precipitation for the first day of the forecast.

Advanced Hydrologic Prediction Service Albany NY

2 Day Total Precipitation Forecast

Shows forecasted precipitation for the first three days of the forecast.

Max T

Day 1 Maximum Temperature

Map displays the maximum temperature for day one. Map gets updated every time the NWS in Gray produces a new grid.

Min Temp Day 1

Minimum Temperature Day 1

Shows forecasted minimum temperature for the first day of the forecast.

Max T

Day 2 Maximum Temperature

Map displays the maximum temperature for day two. Map gets updated every time the NWS in Gray produces a new grid.

 

Min Temp Day 1

Minimum Temperature Day 2

Shows forecasted minimum temperature for the second day of the forecast.

Latest IR SatelliteImage

Day 1 Minimum Wind Chill Temperature

Shows forecasted minimum wind chill temperatures for the first day of the forecast.

Radar Albany NY

Radar

WSR-88D Doppler Radar

Gray ME
Dual-Pol Data | Training
Northeast Sector | Loop
Nationwide | Loop

National Snow AnalysesU.S. Snow Monitoring

National Snow Analyses

Includes data on snow water equivalent, snow depth and more. The data can be view for a day or animated for a two week period or a season.

CONUS & Northeast

NERFC: Observed Snow Maps

Maine Cooperative Snow Survey

Hourly Weather Graph

Hourly Weather Graph

Shows hourly information for any location in Maine or New Hampshire.