Alert archive / Maryland / Red Flag Warnings in 2014

Red Flag Warning 4, NWS Baltimore/Washington

April 23, 20144 counties in Maryland

NWS Baltimore/Washington issued this red flag warning at Apr 23, 2014, 8:09 PM EDT for 4 counties in Maryland. It took effect at Apr 24, 2014, 10:00 AM EDT. It was in force for 8 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 23, 2014, 8:09 PM EDT (00:09 UTC)
In effect from: Apr 24, 2014, 10:00 AM EDT
Expired: Apr 24, 2014, 6:00 PM EDT
In force: 8 hr
Issued by: NWS Baltimore/Washington

Counties Anne Arundel County, MD, Baltimore County, MD, Carroll County, MD, City of Baltimore, MD

The radar

The Sterling radar (KLWX), 78 km from the middle of the area, began a volume at 00:13 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 nearest sounding before it

Washington/Dulle, VA (KIAD), launched 00:00Z, 0.2 hours before the alert went out and 73 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1656 m above ground
0-6 km bulk shear: 92 kt
0-1 km storm-relative helicity: 123 m²/s²
0-3 km storm-relative helicity: 155 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this red flag warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Baltimore/Washington wrote its last area forecast discussion before this red flag warning went out at Apr 23, 3:02 PM EDT, 5 hours 7 minutes earlier.

Area forecast discussion, Apr 23, 3:02 PM EDT, 5 hours 7 minutes before

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Hazardous weather outlook, Apr 23, 5:58 PM EDT, 2 hours 11 minutes before

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The office that day

Everything else NWS Baltimore/Washington issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 24, 4:36 AM EDT	Small Craft Advisory	LWX		43 hr

Nearby

Red Flag Warnings in Maryland, 2014 Every red flag warning in 2014

Sources

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