Alert archive / Pennsylvania / Mesoscale Discussions in 2018

Mesoscale Discussion 423

May 15, 20185 states

The Storm Prediction Center issued this mesoscale discussion at May 15, 2018, 11:43 AM EDT for 5 states. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
May 15, 2018, 11:43 AM EDT (15:43 UTC)
Expired
May 15, 2018, 2:15 PM EDT
In force
3 hr
Issued by
the Storm Prediction Center
Chance of a watch
95%
All 62 counties

Berkshire County, MA, Franklin County, MA, Hampshire County, MA, Sussex County, NJ, Albany County, NY, Broome County, NY, Chemung County, NY, Chenango County, NY, Columbia County, NY, Cortland County, NY, Delaware County, NY, Dutchess County, NY, Fulton County, NY, Greene County, NY, Montgomery County, NY, Orange County, NY, Otsego County, NY, Rensselaer County, NY, Saratoga County, NY, Schenectady County, NY, Schoharie County, NY, Sullivan County, NY, Tioga County, NY, Ulster County, NY, Washington County, NY, Armstrong County, PA, Blair County, PA, Bradford County, PA, Cambria County, PA, Cameron County, PA, Carbon County, PA, Centre County, PA, Clarion County, PA, Clearfield County, PA, Clinton County, PA, Columbia County, PA, Dauphin County, PA, Elk County, PA, Huntingdon County, PA, Indiana County, PA, Jefferson County, PA, Juniata County, PA, Lackawanna County, PA, Luzerne County, PA, Lycoming County, PA, Mifflin County, PA, Monroe County, PA, Montour County, PA, Northumberland County, PA, Perry County, PA, Pike County, PA, Potter County, PA, Schuylkill County, PA, Snyder County, PA, Sullivan County, PA, Susquehanna County, PA, Tioga County, PA, Union County, PA, Wayne County, PA, Wyoming County, PA, Bennington County, VT, Windham County, VT

The radar

The Binghamton radar (KBGM), 51 km from the middle of the area, began a volume at 15:43 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 15, 1:03 PM EDTTornado WatchSPCNorthwest Hills Planning Region4 hr
May 15, 1:46 PM EDTSevere Thunderstorm WatchSPCGreater Bridgeport Planning Region, Lower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region, Southeastern Connecticut Planning Region9 hr
May 15, 1:58 PM EDTMesoscale DiscussionSPC2 hr
May 15, 2:23 PM EDTTornado WatchSPCCapitol Planning Region, Northeastern Connecticut Planning Region4 hr
May 15, 2:38 PM EDTMesoscale DiscussionSPC2 hr
May 15, 3:33 PM EDTMesoscale DiscussionSPC117 min
May 15, 2:26 PM EDTSevere Thunderstorm WatchSPCBristol, Essex, Middlesex, Norfolk, Plymouth, Suffolk5 hr
May 15, 12:26 PM EDTSevere Thunderstorm WatchSPCChemung, Schuyler, Steuben, Tioga, Tompkins7 hr
May 15, 2:14 PM EDTMesoscale DiscussionSPCBroome2 hr

Nearby

Mesoscale Discussions in Pennsylvania, 2018Mesoscale Discussions in New York, 2018Mesoscale Discussions in Massachusetts, 2018Every mesoscale discussion in 2018

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.