Alert archive / Pennsylvania / River Flood Warnings in 2020

River Flood Warning 24, NWS State College, PA

December 25, 2020Lancaster County, York County, Pennsylvania

NWS State College, PA issued this river flood warning at Dec 25, 2020, 12:31 PM EST for Lancaster County, York County, Pennsylvania. It took effect at Dec 26, 2020, 9:00 AM EST. It was in force for 24 hr.

The area

The counties it named.

The facts

Issued: Dec 25, 2020, 12:31 PM EST (17:31 UTC)
In effect from: Dec 26, 2020, 9:00 AM EST
Expired: Dec 27, 2020, 9:14 AM EST
In force: 24 hr
Issued by: NWS State College, PA
Area: Storm-based polygon
Flood severity: Minor

Counties Lancaster County, PA, York County, PA

The radar

The Sterling radar (KLWX), 141 km from the middle of the area, began a volume at 17:33 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 Susquehanna River at Marietta (MRTP1). The gauge peaked at 49.60 ft at Dec 26, 2020, 7:00 PM EST.

Action stage: 44 ft
Minor stage: 49 ft
Moderate stage: 52 ft
Major stage: 54 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 01576000, 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 State College, PA wrote its last area forecast discussion before this river flood warning went out at Dec 25, 11:50 AM EST, 41 minutes earlier.

Area forecast discussion, Dec 25, 11:50 AM EST, 41 minutes before

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Hazardous weather outlook, Dec 25, 5:52 AM EST, 6 hours 39 minutes before

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In the hours before

Local storm report, Dec 25, 9:44 AM EST, 2 hours 47 minutes before

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      <p id="message2">
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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, Dec 25, 9:45 AM EST, 2 hours 46 minutes before

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      <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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Local storm report, Dec 25, 9:49 AM EST, 2 hours 42 minutes before

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<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>
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Local storm report, Dec 25, 9:51 AM EST, 2 hours 40 minutes before

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<body>
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      <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>
</html>

Local storm report, Dec 25, 9:53 AM EST, 2 hours 38 minutes before

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<head>
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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, Dec 25, 12:27 PM EST, 4 minutes before

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<head>
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  <title>Service Notice</title>
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<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 State College, PA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 24, 7:59 PM EST	Areal Flood Advisory	CTP	Cameron, Centre, Clinton, Potter, Tioga	5 hr
Dec 24, 11:39 PM EST	Areal Flood Warning	CTP	Tioga	7 hr
Dec 25, 12:08 AM EST	Special Weather Statement	CTP	Lancaster, Lebanon, York	67 min
Dec 25, 3:58 AM EST	Areal Flood Warning	CTP	Columbia, Dauphin, Lebanon, Montour, Northumberland, Schuylkill	3 hr
Dec 25, 4:32 AM EST	Areal Flood Advisory	CTP	Lycoming, Sullivan	9 hr
Dec 25, 6:48 AM EST	Areal Flood Advisory	CTP	Tioga	7 hr
Dec 25, 12:10 PM EST	River Flood Warning	CTP	Dauphin	62 hr
Dec 25, 12:31 PM EST	River Flood Warning	CTP	Cumberland, Dauphin, Juniata, Lancaster, Perry, Snyder and 1 more	36 hr
Dec 25, 3:50 PM EST	River Flood Warning	CTP	Northumberland, Union	13 hr
Dec 25, 3:50 PM EST	River Flood Warning	CTP	Northumberland, Union	13 hr

Nearby

River Flood Warnings in Pennsylvania, 2020 Every river flood warning in 2020

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.