Alert archive / Texas / Areal Flood Warnings in 2021

Areal Flood Warning 20, NWS Lake Charles, LA

September 14, 2021Jefferson County, Texas

NWS Lake Charles, LA issued this areal flood warning at Sep 14, 2021, 4:03 PM CDT for Jefferson County, Texas. It was in force for 6 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: Sep 14, 2021, 4:03 PM CDT (21:03 UTC)
Expired: Sep 14, 2021, 10:00 PM CDT
In force: 6 hr
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon
Flood severity: None

County Jefferson County, TX

The radar

The Lake Charles radar (KLCH), 95 km from the middle of the area, began a volume at 21:08 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

Corpus Christi, TX (KCRP), launched 12:00Z, 9.1 hours before the alert went out and 390 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: 762 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -2 m²/s²
0-3 km storm-relative helicity: -11 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 areal flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Lake Charles, LA wrote its last area forecast discussion before this areal flood warning went out at Sep 14, 3:42 PM CDT, 21 minutes earlier.

Area forecast discussion, Sep 14, 3:42 PM CDT, 21 minutes before

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Hazardous weather outlook, Sep 14, 3:57 PM CDT, 6 minutes before

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In the hours before

Local storm report, Sep 14, 12:33 PM CDT, 3 hours 30 minutes before

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Local storm report, Sep 14, 12:35 PM CDT, 3 hours 28 minutes before

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Local storm report, Sep 14, 12:36 PM CDT, 3 hours 27 minutes before

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Local storm report, Sep 14, 12:37 PM CDT, 3 hours 26 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, Sep 14, 12:38 PM CDT, 3 hours 25 minutes before

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      <p id="message2">
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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, Sep 14, 2:44 PM CDT, 1 hour 19 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 Lake Charles, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 14, 1:32 AM CDT	Tornado Warning	LCH	Cameron	28 min
Sep 14, 8:19 AM CDT	River Flood Watch	LCH	Beauregard	25 hr
Sep 14, 8:28 AM CDT	River Flood Watch	LCH	Allen	24 hr
Sep 14, 8:28 AM CDT	River Flood Warning	LCH	Rapides	5 days
Sep 14, 8:28 AM CDT	River Flood Warning	LCH	Allen, Beauregard	5 days
Sep 14, 10:25 AM CDT	Flash Flood Warning	LCH	Acadia, Iberia, Jefferson Davis, Lafayette, Saint Landry, Saint Martin and 1 more	3 hr
Sep 14, 3:46 PM CDT	Flash Flood Warning	LCH	Calcasieu, Cameron	3 hr
Sep 14, 5:30 PM CDT	Flash Flood Warning	LCH	Calcasieu	4 hr
Sep 14, 6:24 AM CDT	Flash Flood Warning Considerable damage threat	LCH	Jefferson, Orange	10 hr
Sep 14, 8:18 AM CDT	River Flood Warning	LCH	Hardin, Jefferson, Orange	19 hr
Sep 14, 10:00 AM CDT	Wind Advisory	LCH	Hardin, Jasper, Newton	9 hr
Sep 14, 2:01 PM CDT	River Flood Warning	LCH	Hardin, Jasper, Jefferson, Orange	35 hr

Nearby

Areal Flood Warnings in Texas, 2021 Every areal flood warning in 2021

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.