Winter Storms January 26-27, 2015 - Upper Uwchlan Township
Winter Storms January 26-27, 2015 Prepared 800 AM EST – Monday January 26, 2015 Joe Miketta NOAA’s National Weather Service Philadelphia/Mount Holly NJ Forecast Office www.weather.gov/phi/ National Weather Service Philadelphia/Mt. Holly
Purpose of Briefing • Briefing # 5 • To promote situational awareness for the emergency management community and for other partners. • To provide guidance for planning efforts. • The briefing applies to the WFO Mount Holly service area which is shaded in green on the map. National Weather Service Philadelphia/Mt. Holly
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Executive Summary This will be a major storm for most of our forecast area. Very hazardous conditions are expected from late Monday afternoon through mid-day Tuesday. Travel should be postponed, especially between 7 PM Monday through 9 AM Tuesday. Expect light snow this morning into early afternoon, then heavy snow late this afternoon into Tuesday associated with a coastal storm moving north. Snow could fall at a rate of 1 to 2 inches per hour tonight. Blowing snow will also be an issue. Winter Storm Warnings and Advisories remain in effect. The combination of windy conditions (wind gusts up to 50 mph) and the snow will result in blizzard conditions in northeast New Jersey. Blizzard Warnings remain in effect. The Monday evening and Tuesday morning commutes will be adversely affected. Travel should be postponed tonight and Tuesday. Tidal flooding is expected with the Monday night and Tuesday high tides for the Atlantic Coast and Delaware Bay. Coastal Flood Warnings have been issued. Flooding is not expected along the Chesapeake Bay. Very cold air sweeps over the area in the wake of this system. Expect subzero wind chills as we move into Wednesday. Another briefing package is not anticipated unless major changes occur in the forecast. (Reason: forecasts can change rapidly as the event unfolds, so briefing packages become outdated very quickly). Best place to get fresh, up-to-date information is our website at weather.gov/phi National Weather Service Philadelphia/Mt. Holly
Snow Monday night into Tuesday Evening These amounts have been shaved down just a bit in the western and southern portions of our forecast area from previous forecast amounts. Still a major storm throughout our forecast area…especially in New Jersey.
For the latest forecast and experimental snowfall probabilities, please visit www.weather.gov/phi/winter
National Weather Service Philadelphia/Mt. Holly
Blizzard Conditions and Blowing Snow Northeast New Jersey • Wind gusts up to 50 mph for coastal locations • This combined with the snow could lead to whiteout conditions at times Monday evening through mid day Tuesday • A Blizzard warning is in effect from Monday evening through mid day Tuesday
Delmarva, Southeastern Pennsylvania, and elsewhere in New Jersey
• Wind gusts up to 35 mph • This could lead to localized blowing snow especially with large open areas late Monday night into Tuesday morning
National Weather Service Philadelphia/Mt. Holly
• Moderate tidal flooding is expected along the Atlantic Coast and Delaware Bay. • Minor tidal flooding expected for tidal portions of the Delaware River • Tidal flooding is NOT expected for the Chesapeake Bay
Tidal Flooding
Monday night high tide at Cape May Tuesday afternoon high tide at Cape May
Note: Moderate flooding at Cape May begins at 7.7 feet MLLW. Wave action makes conditions worse. Similar conditions are expected at other locations along the NJ and DE coasts and DE Bay at the times of high tide Monday night and Tuesday. National Weather Service Philadelphia/Mt. Holly
Cold returns! • In the wake of these storm systems, much colder air pours into the region. Low temperatures Wednesday morning will range from the single digits to lower 20s. Wind chills will be much lower.
National Weather Service Philadelphia/Mt. Holly
Questions? •
For the latest information, including the latest watches, warnings and advisories, please visit our website at: – www.weather.gov/phi
• Our latest briefing package is available from our website at: – http://www.erh.noaa.gov/phi/briefing/packages/current_briefing.pdf
• If you wish to be notified when a briefing package is issued, you can follow us on social media where we post the notice. • You can ‘friend’ us on Facebook at: US National Weather Service Philadelphia/Mount Holly • You can follow us on Twitter @NWS_MountHolly • This is the final briefing package unless major changes occur in the forecast. Please monitor our website for fresh, up-to-date information. • Please contact us if you have any questions. • [email protected] – Office 609-261-6602 x222
• [email protected] – Office 609-261-6602 x223 National Weather Service Philadelphia/Mt. Holly
Purpose of Briefing • Briefing # 5 • To promote situational awareness for the emergency management community and for other partners. • To provide guidance for planning efforts. • The briefing applies to the WFO Mount Holly service area which is shaded in green on the map. National Weather Service Philadelphia/Mt. Holly
•
•
•
•
•
•
•
Executive Summary This will be a major storm for most of our forecast area. Very hazardous conditions are expected from late Monday afternoon through mid-day Tuesday. Travel should be postponed, especially between 7 PM Monday through 9 AM Tuesday. Expect light snow this morning into early afternoon, then heavy snow late this afternoon into Tuesday associated with a coastal storm moving north. Snow could fall at a rate of 1 to 2 inches per hour tonight. Blowing snow will also be an issue. Winter Storm Warnings and Advisories remain in effect. The combination of windy conditions (wind gusts up to 50 mph) and the snow will result in blizzard conditions in northeast New Jersey. Blizzard Warnings remain in effect. The Monday evening and Tuesday morning commutes will be adversely affected. Travel should be postponed tonight and Tuesday. Tidal flooding is expected with the Monday night and Tuesday high tides for the Atlantic Coast and Delaware Bay. Coastal Flood Warnings have been issued. Flooding is not expected along the Chesapeake Bay. Very cold air sweeps over the area in the wake of this system. Expect subzero wind chills as we move into Wednesday. Another briefing package is not anticipated unless major changes occur in the forecast. (Reason: forecasts can change rapidly as the event unfolds, so briefing packages become outdated very quickly). Best place to get fresh, up-to-date information is our website at weather.gov/phi National Weather Service Philadelphia/Mt. Holly
Snow Monday night into Tuesday Evening These amounts have been shaved down just a bit in the western and southern portions of our forecast area from previous forecast amounts. Still a major storm throughout our forecast area…especially in New Jersey.
For the latest forecast and experimental snowfall probabilities, please visit www.weather.gov/phi/winter
National Weather Service Philadelphia/Mt. Holly
Blizzard Conditions and Blowing Snow Northeast New Jersey • Wind gusts up to 50 mph for coastal locations • This combined with the snow could lead to whiteout conditions at times Monday evening through mid day Tuesday • A Blizzard warning is in effect from Monday evening through mid day Tuesday
Delmarva, Southeastern Pennsylvania, and elsewhere in New Jersey
• Wind gusts up to 35 mph • This could lead to localized blowing snow especially with large open areas late Monday night into Tuesday morning
National Weather Service Philadelphia/Mt. Holly
• Moderate tidal flooding is expected along the Atlantic Coast and Delaware Bay. • Minor tidal flooding expected for tidal portions of the Delaware River • Tidal flooding is NOT expected for the Chesapeake Bay
Tidal Flooding
Monday night high tide at Cape May Tuesday afternoon high tide at Cape May
Note: Moderate flooding at Cape May begins at 7.7 feet MLLW. Wave action makes conditions worse. Similar conditions are expected at other locations along the NJ and DE coasts and DE Bay at the times of high tide Monday night and Tuesday. National Weather Service Philadelphia/Mt. Holly
Cold returns! • In the wake of these storm systems, much colder air pours into the region. Low temperatures Wednesday morning will range from the single digits to lower 20s. Wind chills will be much lower.
National Weather Service Philadelphia/Mt. Holly
Questions? •
For the latest information, including the latest watches, warnings and advisories, please visit our website at: – www.weather.gov/phi
• Our latest briefing package is available from our website at: – http://www.erh.noaa.gov/phi/briefing/packages/current_briefing.pdf
• If you wish to be notified when a briefing package is issued, you can follow us on social media where we post the notice. • You can ‘friend’ us on Facebook at: US National Weather Service Philadelphia/Mount Holly • You can follow us on Twitter @NWS_MountHolly • This is the final briefing package unless major changes occur in the forecast. Please monitor our website for fresh, up-to-date information. • Please contact us if you have any questions. • [email protected] – Office 609-261-6602 x222
• [email protected] – Office 609-261-6602 x223 National Weather Service Philadelphia/Mt. Holly
