Alert archive / Nebraska / Flash Flood Warnings in 2019

Flash Flood Warning 1, NWS Omaha, NE

March 13, 2019Boone County, Nebraska

NWS Omaha, NE issued this flash flood warning at Mar 13, 2019, 11:01 AM CDT for Boone County, Nebraska. It was in force for 8 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: Mar 13, 2019, 11:01 AM CDT (16:01 UTC)
Expired: Mar 13, 2019, 7:00 PM CDT
In force: 8 hr
Issued by: NWS Omaha, NE
Area: Storm-based polygon
Flood severity: None

County Boone County, NE

The radar

The Omaha radar (KOAX), 148 km from the middle of the area, began a volume at 16:04 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

Omaha, NE (KOAX), launched 12:00Z, 4.0 hours before the alert went out and 148 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 440 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 369 m²/s²
0-3 km storm-relative helicity: 344 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 Omaha, NE wrote its last area forecast discussion before this flash flood warning went out at Mar 13, 6:58 AM CDT, 4 hours 3 minutes earlier.

Area forecast discussion, Mar 13, 6:58 AM CDT, 4 hours 3 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, Mar 13, 5:40 AM CDT, 5 hours 21 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, Mar 13, 10:16 AM CDT, 45 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>

Local storm report, Mar 13, 10:19 AM CDT, 42 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>

Local storm report, Mar 13, 10:34 AM CDT, 27 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>

Local storm report, Mar 13, 10:41 AM CDT, 20 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>

Local storm report, Mar 13, 10:43 AM CDT, 18 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>

Local storm report, Mar 13, 10:46 AM CDT, 15 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 Omaha, NE issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 12, 8:52 PM CDT	River Flood Warning	OAX	Lancaster	41 hr
Mar 13, 4:00 AM CDT	Winter Storm Watch	OAX	Antelope, Boone, Cedar, Knox, Madison, Pierce and 1 more	12 hr
Mar 13, 5:43 AM CDT	River Flood Warning	OAX	Colfax, Dodge	5 days
Mar 13, 5:43 AM CDT	River Flood Warning	OAX	Dodge	4 days
Mar 13, 5:43 AM CDT	River Flood Warning	OAX	Seward	6 days
Mar 13, 7:44 AM CDT	Areal Flood Warning	OAX	Antelope, Boone, Burt, Butler, Colfax, Cuming and 8 more	6 hr
Mar 13, 8:46 AM CDT	Areal Flood Warning	OAX	Antelope, Cedar, Knox, Pierce, Wayne	6 hr
Mar 13, 9:38 AM CDT	River Flood Warning	OAX	Douglas, Saunders	6 days
Mar 13, 9:38 AM CDT	River Flood Warning	OAX	Sarpy, Saunders	6 days
Mar 13, 9:38 AM CDT	River Flood Warning	OAX	Cass, Sarpy	7 days
Mar 13, 9:41 AM CDT	Areal Flood Warning	OAX	Burt, Cass, Dodge, Douglas, Gage, Jefferson and 11 more	3 hr
Mar 13, 10:46 AM CDT	River Flood Warning	OAX	Lancaster	32 hr
Mar 13, 10:51 AM CDT	River Flood Warning	OAX	Knox	3 days
Mar 13, 10:52 AM CDT	River Flood Warning	OAX	Madison	55 hr
Mar 13, 11:05 AM CDT	River Flood Warning	OAX	Dodge	21 days
Mar 13, 1:25 PM CDT	Wind Advisory	OAX	Cass, Douglas, Gage, Jefferson, Johnson, Lancaster and 7 more	3 hr
Mar 13, 1:26 PM CDT	Areal Flood Warning	OAX	Antelope, Boone, Burt, Butler, Cass, Cedar and 19 more	6 hr
Mar 13, 2:20 PM CDT	River Flood Warning	OAX	Cass	27 hr
Mar 13, 2:47 PM CDT	River Flood Warning	OAX	Thurston	21 days
Mar 13, 2:51 PM CDT	River Flood Warning	OAX	Gage	6 days
Mar 13, 2:58 PM CDT	River Flood Warning	OAX	Washington	10 days
Mar 13, 2:58 PM CDT	River Flood Warning	OAX	Douglas, Sarpy	10 days
Mar 13, 3:25 PM CDT	Flash Flood Warning	OAX	Pierce	6 hr
Mar 13, 3:35 PM CDT	Winter Storm Warning	OAX	Antelope, Boone, Cedar, Knox, Madison, Pierce and 1 more	23 hr
Mar 13, 3:50 PM CDT	Areal Flood Warning	OAX	Saline, Seward	6 hr
Mar 13, 4:02 PM CDT	High Wind Warning	OAX	Antelope, Boone, Butler, Cedar, Colfax, Cuming and 10 more	28 hr
Mar 13, 4:02 PM CDT	Wind Advisory	OAX	Antelope, Boone, Burt, Butler, Cass, Cedar and 24 more	33 hr
Mar 13, 6:19 PM CDT	Flash Flood Warning	OAX	Boone, Platte	6 hr
Mar 13, 6:19 PM CDT	River Flood Warning	OAX	Platte	5 days
Mar 13, 6:29 PM CDT	Areal Flood Warning	OAX	Antelope, Boone, Burt, Butler, Cass, Cedar and 24 more	39 hr
Mar 12, 11:58 PM CDT	Areal Flood Warning	OAX	Fremont	12 hr
Mar 13, 4:44 AM CDT	Areal Flood Warning	OAX	Mills, Pottawattamie	12 hr
Mar 13, 6:34 AM CDT	Areal Flood Warning	OAX	Shelby	12 hr
Mar 13, 11:09 AM CDT	River Flood Warning	OAX	Monona	69 hr
Mar 13, 12:41 PM CDT	Flash Flood Warning	OAX	Fremont, Harrison, Mills, Montgomery, Page, Pottawattamie and 1 more	6 hr
Mar 13, 1:24 PM CDT	River Flood Warning	OAX	Harrison	33 hr

Nearby

Flash Flood Warnings in Nebraska, 2019 Every flash flood warning in 2019

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.