Alert archive / Maryland / Flash Flood Warnings in 2014

Flash Flood Warning 16, NWS Baltimore/Washington

June 10, 2014Baltimore County, City of Baltimore, Maryland

NWS Baltimore/Washington issued this flash flood warning at Jun 10, 2014, 7:31 PM EDT for Baltimore County, City of Baltimore, Maryland. It was in force for 4 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: Jun 10, 2014, 7:31 PM EDT (23:31 UTC)
Expired: Jun 10, 2014, 11:30 PM EDT
In force: 4 hr
Issued by: NWS Baltimore/Washington
Area: Storm-based polygon
Flood severity: None

Counties Baltimore County, MD, City of Baltimore, MD

The radar

The Sterling radar (KLWX), 87 km from the middle of the area, began a volume at 23:31 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

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 11.5 hours before the alert went out and 46 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: 566 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 712 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 63 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 flash flood 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 flash flood warning went out at Jun 10, 2:38 PM EDT, 4 hours 53 minutes earlier.

Area forecast discussion, Jun 10, 2:38 PM EDT, 4 hours 53 minutes before

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Hazardous weather outlook, Jun 10, 7:27 PM EDT, 4 minutes before

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In the hours before

Local storm report, Jun 10, 3:41 PM EDT, 3 hours 50 minutes before

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Local storm report, Jun 10, 3:44 PM EDT, 3 hours 47 minutes before

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Local storm report, Jun 10, 3:47 PM EDT, 3 hours 44 minutes before

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      <h1 id="headline">This service is currently unavailable.</h1>
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Local storm report, Jun 10, 3:49 PM EDT, 3 hours 42 minutes before

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      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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      <p id="message2">
        Please try again in a few minutes.
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      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 10, 11:08 AM EDT	Flash Flood Watch	LWX	Arlington, Fairfax, City of Alexandria, City of Fairfax, City of Falls Church	15 hr
Jun 9, 10:09 PM EDT	Coastal Flood Advisory	LWX	Anne Arundel	8 hr
Jun 10, 4:45 AM EDT	Flash Flood Warning	LWX	Harford	3 hr
Jun 10, 9:28 AM EDT	Flash Flood Warning	LWX	Prince George's	3 hr
Jun 10, 10:42 AM EDT	Flash Flood Warning	LWX	Prince George's	3 hr
Jun 10, 1:19 PM EDT	Areal Flood Warning	LWX	Prince George's	3 hr

Nearby

Flash Flood Warnings in Maryland, 2014 Every flash flood 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.