Alert archive / Minnesota / Flash Flood Watches in 2013

Flash Flood Watch 1, NWS La Crosse, WI

May 19, 2013Mitchell County, Iowa; 5 counties in Minnesota

NWS La Crosse, WI issued this flash flood watch at May 19, 2013, 3:39 AM CDT for Mitchell County, Iowa; 5 counties in Minnesota. It took effect at May 19, 2013, 3:00 PM CDT. It was in force for 24 hr.

The area

The counties it named.

The facts

Issued: May 19, 2013, 3:39 AM CDT (08:39 UTC)
In effect from: May 19, 2013, 3:00 PM CDT
Expired: May 20, 2013, 3:08 PM CDT
In force: 24 hr
Issued by: NWS La Crosse, WI
Flood severity: None

Counties Mitchell County, IA, Dodge County, MN, Fillmore County, MN, Mower County, MN, Olmsted County, MN, Wabasha County, MN

The radar

The La Crosse radar (KARX), 107 km from the middle of the area, began a volume at 08:41 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

Minneapolis, MN (KMPX), launched 00:00Z, 8.7 hours before the alert went out and 142 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: 504 J/kg
Mixed-layer CIN: -29 J/kg
Mixed-layer LCL: 1502 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 60 m²/s²
0-3 km storm-relative helicity: 178 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 5.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch 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 flash flood watch went out at May 19, 3:18 AM CDT, 21 minutes earlier.

Area forecast discussion, May 19, 3:18 AM CDT, 21 minutes before

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Hazardous weather outlook, May 18, 3:32 PM CDT, 12 hours 7 minutes before

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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
May 19, 5:31 PM CDT	Severe Thunderstorm Warning	ARX	Buffalo, Trempealeau	59 min
May 19, 6:27 PM CDT	Severe Thunderstorm Warning	ARX	Buffalo, Trempealeau	33 min
May 19, 6:29 PM CDT	Severe Thunderstorm Warning	ARX	Clark, Jackson, La Crosse, Trempealeau	76 min
May 19, 2:56 PM CDT	Severe Thunderstorm Warning	ARX	Floyd, Mitchell	64 min
May 19, 3:03 PM CDT	Tornado Warning	ARX	Floyd, Mitchell	42 min
May 19, 3:28 PM CDT	Severe Thunderstorm Warning	ARX	Chickasaw, Floyd, Howard, Mitchell	47 min
May 19, 3:36 PM CDT	Tornado Warning	ARX	Chickasaw, Floyd, Howard, Mitchell	39 min
May 19, 3:53 PM CDT	Severe Thunderstorm Warning	ARX	Mitchell	37 min
May 19, 4:16 PM CDT	Tornado Warning	ARX	Howard	44 min
May 19, 4:29 PM CDT	Severe Thunderstorm Warning	ARX	Howard, Mitchell	46 min
May 19, 4:44 PM CDT	Flash Flood Warning	ARX	Howard, Mitchell	6 hr
May 19, 5:20 PM CDT	Severe Thunderstorm Warning	ARX	Floyd, Mitchell	40 min
May 19, 5:55 PM CDT	Flash Flood Warning	ARX	Floyd, Howard, Mitchell	6 hr
May 19, 4:14 PM CDT	Severe Thunderstorm Warning	ARX	Olmsted, Wabasha	61 min
May 19, 4:35 PM CDT	Severe Thunderstorm Warning	ARX	Wabasha	25 min
May 19, 4:59 PM CDT	Severe Thunderstorm Warning	ARX	Olmsted, Winona	46 min
May 19, 6:21 PM CDT	Severe Thunderstorm Warning	ARX	Olmsted, Wabasha, Winona	39 min
May 19, 6:56 PM CDT	Severe Thunderstorm Warning	ARX	Fillmore, Olmsted, Wabasha, Winona	64 min

Nearby

Flash Flood Watches in Minnesota, 2013 Flash Flood Watches in Iowa, 2013 Every flash flood watch in 2013

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.