Alert archive / Maryland / Mesoscale Discussions in 2004

Mesoscale Discussion 2234

September 17, 20047 counties in Maryland; Adams County, Lancaster County, York County, Pennsylvania

The Storm Prediction Center issued this mesoscale discussion at Sep 17, 2004, 3:33 PM EDT for 7 counties in Maryland; Adams County, Lancaster County, York County, Pennsylvania. It was in force for 117 min.

The area

The outline as issued.

The facts

Issued
Sep 17, 2004, 3:33 PM EDT (19:33 UTC)
Expired
Sep 17, 2004, 5:30 PM EDT
In force
117 min
Issued by
the Storm Prediction Center

Counties Anne Arundel County, MD, Baltimore County, MD, Carroll County, MD, City of Baltimore, MD, Frederick County, MD, Harford County, MD, Howard County, MD, Adams County, PA, Lancaster County, PA, York County, PA

The radar

The Sterling radar (KLWX), 83 km from the middle of the area, began a volume at 19:36 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, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 17, 12:33 PM EDTMesoscale DiscussionSPCCharles, Saint Mary's117 min
Sep 17, 1:15 PM EDTTornado WatchSPCAnne Arundel, Calvert, Charles, Prince George's, Saint Mary's7 hr
Sep 17, 3:50 PM EDTTornado WatchSPCAnne Arundel, Baltimore, Carroll, Frederick, Harford, Howard and 3 more4 hr
Sep 17, 3:53 PM EDTMesoscale DiscussionSPCCalvert, Charles, Prince George's, Saint Mary's2 hr
Sep 17, 6:19 PM EDTMesoscale DiscussionSPCAnne Arundel, Baltimore, Calvert, Carroll, Charles, Frederick and 6 more116 min
Sep 17, 6:50 PM EDTTornado WatchSPCAnne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 14 more5 hr

Nearby

Mesoscale Discussions in Maryland, 2004Mesoscale Discussions in Pennsylvania, 2004Every mesoscale discussion in 2004

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.