Alert archive / Pennsylvania / Mesoscale Discussions in 2018

Mesoscale Discussion 159

March 20, 20185 states

The Storm Prediction Center issued this mesoscale discussion at Mar 20, 2018, 12:19 PM EDT for 5 states. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued: Mar 20, 2018, 12:19 PM EDT (16:19 UTC)
Expired: Mar 20, 2018, 4:15 PM EDT
In force: 4 hr
Issued by: the Storm Prediction Center

All 33 counties

New Castle County, DE, Baltimore County, MD, Carroll County, MD, Cecil County, MD, City of Baltimore, MD, Frederick County, MD, Harford County, MD, Howard County, MD, Montgomery County, MD, Washington County, MD, Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Mercer County, NJ, Ocean County, NJ, Salem County, NJ, Adams County, PA, Bedford County, PA, Berks County, PA, Bucks County, PA, Chester County, PA, Cumberland County, PA, Delaware County, PA, Franklin County, PA, Fulton County, PA, Lancaster County, PA, Lebanon County, PA, Montgomery County, PA, Philadelphia County, PA, York County, PA, Berkeley County, WV, Jefferson County, WV, Morgan County, WV

The radar

The Sterling radar (KLWX), 136 km from the middle of the area, began a volume at 16:19 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 text

As transmitted.

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Nearby

Mesoscale Discussions in Pennsylvania, 2018 Mesoscale Discussions in Maryland, 2018 Mesoscale Discussions in New Jersey, 2018 Every 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.