NWS Philadelphia/Mount Holly Winter Weather Decision Support Services

NWS Mt. Holly Winter Weather Decision Support Service

NWS Philadelphia/Mt. Holly Winter Weather Products

Winter Weather Message
(Watches, Warnings, Advisories)

Non-Precip Winter Weather Message
(Watches, Warnings, Advisories)

Public Information Statement
(Snowfall Reports)

Short Term Forecast

Special Weather Statement

Hazardous Weather Outlook

Area Forecast Discussion

Current Radar & Satellite Images
Fort Dix Radar		Dover AFB Radar
Visible Satellite Loop It	Infrared Satellite Loop It	Current Weather	Today's Weather

Winter Storm Total Forecasts - Philadelphia/Mt. Holly Forecast Office
Storm Total Snow Forecast	Storm Total Ice Forecast	Storm Total Rainfall Forecast

Terminology & Watch/Warning/Advisory Criteria

Warnings:
A warning is issued to alert the public to imminent dangerous winter weather. Normally a warning is issued after a winter storm watch has been in effect. A winter storm watch may not precede a warning if winter weather develops quickly and unexpectedly. A Winter Storm Warning is issued when heavy snow, significant freezing rain, or heavy sleet is expected to occur. Usually issued 6 to 18 hours in advance of the winter weather. A Blizzard Warning is issued when sustained or gusty winds of 35 mph or more are expected to reduce visibility at or below a quarter of a mile due to falling and/or blowing snow for at least three hours. Wind Chill Warnings are issued when wind chills are expected to be below -24 degrees fahrenheit.
Watches:
A watch is issued to alert the public to the potential for dangerous winter weather. A Winter Storm Watch is issued when conditions exist for the possible occurrence of dangerous winter weather such as a blizzard, heavy snow, significant freezing rain or heavy sleet. Usually issued 12 to 36 hours in advance of the winter weather.
Advisories:
A less severe winter weather event will prompt the issuance of an advisory. An advisory is named specific to the weather event expected and is issued when the event is expected to be widespread. Travel by foot or vehicle may be dangerous during an advisory even if the winter weather is not expected to reach winter storm criteria.

Criteria Maps for Watches/Warnings/Advisories
12 Hour Snow Warning
Mt. Holly County Warning Area	Eastern Region
24 Hour Snow Warning
Mt. Holly County Warning Area	Eastern Region
Freezing Rain Warning
Mt. Holly County Warning Area	Eastern Region
Wind Chill Warning
Mt. Holly County Warning Area	Eastern Region
12 Hour Snow Advisory
Mt. Holly County Warning Area	Eastern Region
Freezing Rain Advisory
Mt. Holly County Warning Area	Eastern Region
Wind Chill Advisory
Mt. Holly County Warning Area	Eastern Region

Day 1/2 Snow and Ice
12 Hour Snow Accum
12 Hour Ice Accum
Winter Forecast Graphics
Roadway Cameras
Upper Air Soundings
HPC/CPC

Day 1 and Day 2 Snowfall and Ice Click on images to enlarge and then scroll through.
Today's Snowfall	Tomorrow's Snowfall	Today's Ice Accumulation	Tomorrow's Ice Accumulation

0 - 48 Hour Snowfall Accumulation Forecasts Click on images to enlarge and then scroll through.
0 - 12 Hour Snowfall	13 - 24 Hour Snowfall	25 - 36 Hour Snowfall	37 - 48 Hour Snowfall

0 - 48 Hour Ice Accumulation Forecasts Click on images to enlarge and then scroll through.
0 - 12 Hour Ice	13 - 24 Hour Ice	25 - 36 Hour Ice	37 - 48 Hour Ice

PHI Wind Chill/Temperature/Wind Forecasts
Step backward one image Step forward one image	Step backward one image Step forward one image	Step backward one image Step forward one image

Regional Area Roadway Cameras
Click on links below to have that particular state's camera websites load.

PennDOT Roadway Cameras

NJDOT Roadway Cameras

DelDOT Roadway Cameras

CHART (MD's) Roadway Cameras

All Camera feeds come from the respective State's Department of Transportation.

Regional Upper Air Sounding Plots
Upton, NY Upper Air Sounding	Sterling, VA Upper Air Sounding	Wallops Island Upper Air Sounding	Buffalo, NY Upper Air Sounding

HPC/CPC Data
Click on links below to load that particular website.

HPC's Heavy Snowfall Disco

CPC's Three Month Outlooks

CPC's 6-10 Day Outlook

CPC's 8-14 Day Outlook

East Coast Snow Analysis

Interactive Snow Analysis Map