Alert archive / Wisconsin / Areal Flood Warnings in 2016

Areal Flood Warning 19, NWS La Crosse, WI

September 7, 2016Crawford County, Richland County, Vernon County, Wisconsin

NWS La Crosse, WI issued this areal flood warning at Sep 7, 2016, 3:37 PM CDT for Crawford County, Richland County, Vernon County, Wisconsin. It was in force for 12 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 7, 2016, 3:37 PM CDT (20:37 UTC)
Expired: Sep 8, 2016, 3:30 AM CDT
In force: 12 hr
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Flood severity: None

Counties Crawford County, WI, Richland County, WI, Vernon County, WI

The radar

The La Crosse radar (KARX), 60 km from the middle of the area, began a volume at 20:38 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

Green Bay/Straub, WI (KGRB), launched 12:00Z, 8.6 hours before the alert went out and 242 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: 20 J/kg
Mixed-layer CIN: -281 J/kg
Mixed-layer LCL: 1161 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: -54 m²/s²
0-3 km storm-relative helicity: -96 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 La Crosse, WI wrote its last area forecast discussion before this areal flood warning went out at Sep 7, 3:07 PM CDT, 30 minutes earlier.

Area forecast discussion, Sep 7, 3:07 PM CDT, 30 minutes before

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Hazardous weather outlook, Sep 7, 3:19 PM CDT, 18 minutes before

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In the hours before

Local storm report, Sep 7, 9:40 AM CDT, 5 hours 57 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
940 AM CDT WED SEP 07 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0939 AM     FLOOD            2 SSW LA FARGE          43.55N 90.65W
09/07/2016                   RICHLAND           WI   LAW ENFORCEMENT

            WATER STILL OVER ROADWAY BETWEEN VIOLA AND LA FARGE

&&

SHEA

Local storm report, Sep 7, 10:55 AM CDT, 4 hours 42 minutes before

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Local storm report, Sep 7, 12:41 PM CDT, 2 hours 56 minutes before

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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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        Please try again in a few minutes.
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Local storm report, Sep 7, 1:07 PM CDT, 2 hours 30 minutes before

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<body>
  <main class="wrap">
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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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        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 La Crosse, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 6, 8:38 PM CDT	Special Weather Statement	ARX	Richland	52 min
Sep 6, 11:00 PM CDT	Special Weather Statement	ARX	La Crosse	3 hr
Sep 7, 3:35 AM CDT	Flash Flood Warning	ARX	Richland, Vernon	4 hr
Sep 7, 6:38 AM CDT	River Flood Warning	ARX	Vernon	3 days
Sep 7, 6:51 AM CDT	River Flood Warning	ARX	Richland, Vernon	57 hr
Sep 7, 7:24 AM CDT	River Flood Warning	ARX	Crawford	3 days
Sep 7, 7:27 AM CDT	Flash Flood Warning	ARX	Richland, Vernon	3 hr
Sep 7, 8:01 AM CDT	River Flood Warning	ARX	Crawford	5 days
Sep 7, 10:04 AM CDT	River Flood Warning	ARX	Crawford	6 days
Sep 7, 10:14 AM CDT	Areal Flood Warning	ARX	Crawford, Richland, Vernon	6 hr
Sep 7, 2:12 AM CDT	Flash Flood Warning	ARX	Allamakee, Winneshiek	5 hr
Sep 7, 6:32 AM CDT	River Flood Warning	ARX	Winneshiek	34 hr
Sep 7, 7:14 AM CDT	Flash Flood Warning	ARX	Allamakee, Winneshiek	3 hr
Sep 7, 8:05 AM CDT	River Flood Warning	ARX	Allamakee	3 days

Nearby

Areal Flood Warnings in Wisconsin, 2016 Every areal flood warning in 2016

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.