Alert archive / Maryland / River Flood Warnings in 2011

River Flood Warning 78, NWS Baltimore/Washington

October 13, 2011Montgomery County, Maryland

NWS Baltimore/Washington issued this river flood warning at Oct 13, 2011, 11:23 PM EDT for Montgomery County, Maryland. It took effect at Oct 13, 2011, 11:36 PM EDT. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Oct 13, 2011, 11:23 PM EDT (03:23 UTC)
In effect from: Oct 13, 2011, 11:36 PM EDT
Expired: Oct 14, 2011, 3:03 AM EDT
In force: 3 hr
Issued by: NWS Baltimore/Washington
Flood severity: Minor

County Montgomery County, MD

The radar

The Sterling radar (KLWX), 30 km from the middle of the area, began a volume at 03:24 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 river

Written for the forecast point Seneca Creek at Dawsonville (DAWM2). The gauge peaked at 8.21 ft at Oct 14, 2011, 12:00 AM EDT.

Action stage: 5 ft
Minor stage: 7.5 ft
Moderate stage: 11 ft
Major stage: 16 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 01645000, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

The local office's own words before this river 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 river flood warning went out at Oct 13, 9:08 PM EDT, 2 hours 15 minutes earlier.

Area forecast discussion, Oct 13, 9:08 PM EDT, 2 hours 15 minutes before

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Hazardous weather outlook, Oct 13, 9:16 PM EDT, 2 hours 7 minutes before

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In the hours before

Local storm report, Oct 13, 9:11 PM EDT, 2 hours 12 minutes before

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Local storm report, Oct 13, 9:14 PM EDT, 2 hours 9 minutes before

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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Local storm report, Oct 13, 9:23 PM EDT, 2 hours before

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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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Local storm report, Oct 13, 9:24 PM EDT, 1 hour 59 minutes before

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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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Local storm report, Oct 13, 9:32 PM EDT, 1 hour 51 minutes before

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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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Local storm report, Oct 13, 10:37 PM EDT, 46 minutes before

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      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <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
Oct 13, 8:53 PM EDT	Flash Flood Warning	LWX	Fairfax	2 hr
Oct 13, 8:59 PM EDT	Flash Flood Warning	LWX	Culpeper, Fauquier, Madison, Rappahannock	2 hr
Oct 13, 11:04 PM EDT	Areal Flood Warning	LWX	Fairfax, City of Fairfax	117 min
Oct 14, 1:44 AM EDT	Small Craft Advisory	LWX		54 hr
Oct 14, 4:37 AM EDT	Small Craft Advisory	LWX		51 hr
Oct 14, 12:04 PM EDT	Coastal Flood Advisory	LWX	Arlington, Fairfax, City of Alexandria, City of Fairfax, City of Falls Church	16 hr
Oct 14, 1:34 PM EDT	Special Marine Warning	LWX		69 min
Oct 14, 1:39 PM EDT	Special Marine Warning	LWX		64 min
Oct 14, 6:45 PM EDT	Small Craft Advisory	LWX		25 hr
Oct 14, 6:48 PM EDT	Wind Advisory	LWX	Highland, Rockingham, Shenandoah, City of Harrisonburg, City of Staunton, City of Waynesboro	23 hr
Oct 14, 11:11 AM EDT	Special Weather Statement	LWX	Harford	34 min
Oct 14, 11:17 AM EDT	Severe Thunderstorm Warning	LWX	Harford	15 min
Oct 14, 1:41 PM EDT	Special Weather Statement	LWX	Calvert	34 min

Nearby

River Flood Warnings in Maryland, 2011 Every river flood warning in 2011

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; the gauge from the NWS water service and the USGS.