Alert archive / Wisconsin / Areal Flood Warnings in 2012

Areal Flood Warning 1, NWS Green Bay, WI

May 3, 2012Calumet County, Winnebago County, Wisconsin

NWS Green Bay, WI issued this areal flood warning at May 3, 2012, 7:40 AM CDT for Calumet County, Winnebago County, Wisconsin. It was in force for 4 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: May 3, 2012, 7:40 AM CDT (12:40 UTC)
Expired: May 3, 2012, 12:00 PM CDT
In force: 4 hr
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Flood severity: None

Counties Calumet County, WI, Winnebago County, WI

The radar

The Green Bay radar (KGRB), 54 km from the middle of the area, began a volume at 12:40 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, 0.7 hours before the alert went out and 52 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: 321 J/kg
Mixed-layer CIN: -146 J/kg
Mixed-layer LCL: 565 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 160 m²/s²
0-3 km storm-relative helicity: 220 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.8

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 Green Bay, WI wrote its last area forecast discussion before this areal flood warning went out at May 3, 3:39 AM CDT, 4 hours 1 minute earlier.

Area forecast discussion, May 3, 3:39 AM CDT, 4 hours 1 minute before

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Hazardous weather outlook, May 3, 4:27 AM CDT, 3 hours 13 minutes before

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In the hours before

Local storm report, May 3, 7:06 AM CDT, 34 minutes before

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Local storm report, May 3, 7:10 AM CDT, 30 minutes before

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Local storm report, May 3, 7:16 AM CDT, 24 minutes before

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Local storm report, May 3, 7:20 AM CDT, 20 minutes before

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Special weather statement, May 3, 7:20 AM CDT, 20 minutes before

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Local storm report, May 3, 7:25 AM CDT, 15 minutes before

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The office that day

Everything else NWS Green Bay, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 2, 7:55 PM CDT	Marine Dense Fog Advisory	GRB		8 hr
May 3, 1:48 AM CDT	Flash Flood Warning	GRB	Winnebago	3 hr
May 3, 2:13 AM CDT	Flash Flood Warning	GRB	Calumet, Manitowoc	6 hr
May 3, 4:57 AM CDT	Flash Flood Warning	GRB	Winnebago	3 hr
May 3, 5:58 AM CDT	Severe Thunderstorm Warning	GRB	Vilas	34 min
May 3, 7:58 AM CDT	Severe Thunderstorm Warning	GRB	Portage, Waushara	47 min
May 3, 8:08 AM CDT	Areal Flood Advisory	GRB	Portage, Wood	114 min
May 3, 8:37 AM CDT	Severe Thunderstorm Warning	GRB	Waushara	25 min
May 3, 10:12 AM CDT	Areal Flood Advisory	GRB	Brown, Kewaunee, Manitowoc	80 min
May 3, 10:36 AM CDT	Special Marine Warning	GRB		71 min

Nearby

Areal Flood Warnings in Wisconsin, 2012 Every areal flood warning in 2012

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.