Alert archive / Maryland / Flash Flood Warnings in 2022

Flash Flood Warning 23, NWS Baltimore/Washington

July 2, 2022Montgomery County, Maryland

NWS Baltimore/Washington issued this flash flood warning at Jul 2, 2022, 10:52 PM EDT for Montgomery County, Maryland. It was in force for 3 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: Jul 2, 2022, 10:52 PM EDT (02:52 UTC)
Expired: Jul 3, 2022, 1:48 AM EDT
In force: 3 hr
Issued by: NWS Baltimore/Washington
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

County Montgomery County, MD

The radar

The Sterling radar (KLWX), 30 km from the middle of the area, began a volume at 02:51 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.

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 Jul 2, 9:58 PM EDT, 54 minutes earlier.

Area forecast discussion, Jul 2, 9:58 PM EDT, 54 minutes before

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Hazardous weather outlook, Jul 2, 10:03 PM EDT, 49 minutes before

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    <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.
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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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In the hours before

Local storm report, Jul 2, 10:21 PM EDT, 31 minutes before

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<body>
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    <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.
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Local storm report, Jul 2, 10:27 PM EDT, 25 minutes before

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<body>
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    <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>
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</body>
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Local storm report, Jul 2, 10:31 PM EDT, 21 minutes before

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</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, Jul 2, 10:43 PM EDT, 9 minutes before

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  <title>Service Notice</title>
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</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, Jul 2, 10:45 PM EDT, 7 minutes before

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<html lang="en">
<head>
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  <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, Jul 2, 10:46 PM EDT, 6 minutes before

<!doctype html>
<html lang="en">
<head>
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  <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
Jul 2, 8:10 PM EDT	Special Marine Warning	LWX		95 min
Jul 2, 9:01 PM EDT	Flash Flood Warning	LWX	Arlington, Fairfax	6 hr
Jul 2, 9:37 PM EDT	Special Marine Warning	LWX		63 min
Jul 2, 11:00 PM EDT	Flash Flood Warning	LWX	Loudoun	3 hr
Jul 3, 12:25 AM EDT	Special Marine Warning	LWX		2 hr
Jul 3, 2:46 AM EDT	Areal Flood Warning	LWX	Arlington, Fairfax	6 hr
Jul 3, 2:48 AM EDT	Areal Flood Warning	LWX	Arlington	6 hr
Jul 2, 8:07 PM EDT	Areal Flood Warning	LWX	Cecil	5 hr
Jul 2, 8:34 PM EDT	Flash Flood Warning	LWX	Baltimore, City of Baltimore	3 hr
Jul 2, 9:13 PM EDT	Severe Thunderstorm Warning	LWX	Cecil	47 min
Jul 2, 9:16 PM EDT	Tornado Warning	LWX	Cecil	16 min
Jul 2, 10:31 PM EDT	Flash Flood Warning	LWX	Montgomery	3 hr
Jul 2, 11:16 PM EDT	Areal Flood Warning	LWX	Baltimore, City of Baltimore	3 hr
Jul 3, 12:52 AM EDT	Flash Flood Warning	LWX	Prince George's	116 min
Jul 3, 1:17 AM EDT	Severe Thunderstorm Warning	LWX	Anne Arundel, Prince George's	43 min
Jul 3, 1:19 AM EDT	Areal Flood Warning	LWX	Montgomery	3 hr
Jul 3, 1:48 AM EDT	Areal Flood Warning	LWX	Montgomery	3 hr

Nearby

Flash Flood Warnings in Maryland, 2022 Every flash flood warning in 2022

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.