Alert archive / Maryland / River Flood Warnings in 2011
River Flood Warning 73, NWS Baltimore/Washington
NWS Baltimore/Washington issued this river flood warning at Sep 6, 2011, 10:17 PM EDT for Montgomery County, Maryland. It took effect at Sep 8, 2011, 4:24 AM EDT. It was in force for .
The area
The counties it named.
The facts
- Issued
- Sep 6, 2011, 10:17 PM EDT (02:17 UTC)
- In effect from
- Sep 8, 2011, 4:24 AM EDT
- Expired
- Sep 7, 2011, 5:06 PM EDT
- In force
- 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 02:20 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).
- 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 Sep 6, 9:33 PM EDT, 44 minutes earlier.
Area forecast discussion, Sep 6, 9:33 PM EDT, 44 minutes before
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<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.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>Hazardous weather outlook, Sep 6, 7:41 PM EDT, 2 hours 36 minutes before
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<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.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>In the hours before
Local storm report, Sep 6, 8:16 PM EDT, 2 hours 1 minute before
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<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.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>Local storm report, Sep 6, 8:22 PM EDT, 1 hour 55 minutes before
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<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.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>The office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 6, 10:54 PM EDT | Areal Flood Warning | LWX | Albemarle, Greene, Nelson, Orange, City of Charlottesville | 4 hr |
| Sep 7, 12:21 AM EDT | Flash Flood Warning | LWX | Albemarle, Nelson, City of Charlottesville | 3 hr |
| Sep 7, 10:47 AM EDT | Flash Flood Warning | LWX | Arlington, Fairfax, City of Alexandria, City of Falls Church | 7 hr |
| Sep 7, 11:11 AM EDT | Small Craft Advisory | LWX | 7 hr | |
| Sep 7, 11:38 AM EDT | Flash Flood Warning | LWX | Fairfax, King George, Prince William, Spotsylvania, Stafford, City of Fairfax and 2 more | 3 hr |
| Sep 7, 12:37 PM EDT | Coastal Flood Advisory | LWX | Arlington, Fairfax, King George, Stafford, City of Alexandria, City of Fairfax and 1 more | 70 hr |
| Sep 7, 1:23 PM EDT | Special Marine Warning | LWX | 2 hr | |
| Sep 7, 1:26 PM EDT | Special Marine Warning | LWX | 78 min | |
| Sep 7, 1:30 PM EDT | Special Marine Warning | LWX | 95 min | |
| Sep 7, 4:31 PM EDT | Special Marine Warning | LWX | 119 min | |
| Sep 7, 5:25 PM EDT | Areal Flood Warning | LWX | Arlington, Fairfax, City of Alexandria, City of Fairfax, City of Falls Church | 6 hr |
| Sep 7, 6:20 PM EDT | Special Marine Warning | LWX | 115 min | |
| Sep 6, 9:07 PM EDT | River Flood Warning | LWX | Garrett | 7 hr |
| Sep 7, 1:19 AM EDT | Special Weather Statement | LWX | Baltimore, Carroll | 56 min |
| Sep 7, 9:51 AM EDT | Flash Flood Warning | LWX | Baltimore, City of Baltimore | 12 hr |
| Sep 7, 10:57 AM EDT | Special Weather Statement | LWX | Prince George's | 33 min |
| Sep 7, 11:28 AM EDT | Special Weather Statement | LWX | Charles, Prince George's | 32 min |
| Sep 7, 11:33 AM EDT | Flash Flood Warning | LWX | Anne Arundel, Baltimore, Carroll, Howard, Prince George's | 10 hr |
| Sep 7, 11:46 AM EDT | Special Weather Statement | LWX | Howard | 44 min |
| Sep 7, 12:14 PM EDT | Special Weather Statement | LWX | Charles | 31 min |
| Sep 7, 12:18 PM EDT | Flash Flood Warning | LWX | Charles, Prince George's, Saint Mary's | 5 hr |
| Sep 7, 12:39 PM EDT | Special Weather Statement | LWX | Prince George's | 51 min |
| Sep 7, 1:03 PM EDT | Special Weather Statement | LWX | Montgomery | 27 min |
| Sep 7, 1:14 PM EDT | Flash Flood Warning | LWX | Carroll, Howard, Montgomery | 3 hr |
| Sep 7, 1:28 PM EDT | Flash Flood Warning | LWX | Anne Arundel, Calvert, Prince George's, Saint Mary's | 3 hr |
| Sep 7, 1:32 PM EDT | Special Weather Statement | LWX | Baltimore, City of Baltimore | 28 min |
| Sep 7, 1:58 PM EDT | Flash Flood Warning | LWX | Baltimore, Harford | 8 hr |
| Sep 7, 4:19 PM EDT | Areal Flood Warning | LWX | Anne Arundel, Calvert, Saint Mary's | 6 hr |
| Sep 7, 5:03 PM EDT | Special Weather Statement | LWX | Calvert | 22 min |
| Sep 7, 6:12 PM EDT | Special Weather Statement | LWX | Baltimore, City of Baltimore | 48 min |
| Sep 7, 6:55 PM EDT | Special Weather Statement | LWX | Saint Mary's | 35 min |
| Sep 7, 7:23 PM EDT | Tornado Warning | LWX | Saint Mary's | 37 min |
| Sep 7, 7:50 PM EDT | Tornado Warning | LWX | Calvert, Saint Mary's | 25 min |
Nearby
River Flood Warnings in Maryland, 2011Every 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.