Alert archive / Wisconsin / Flood Watches in 2008

Flood Watch 1, NWS La Crosse, WI

March 30, 20084 counties in Wisconsin; Allamakee County, Clayton County, Fayette County, Iowa

NWS La Crosse, WI issued this flood watch at Mar 30, 2008, 3:53 AM CDT for 4 counties in Wisconsin; Allamakee County, Clayton County, Fayette County, Iowa. It took effect at Mar 31, 2008, 4:00 AM CDT. It was in force for 17 hr.

The area

The counties it named.

The facts

Issued
Mar 30, 2008, 3:53 AM CDT (08:53 UTC)
In effect from
Mar 31, 2008, 4:00 AM CDT
Expired
Mar 31, 2008, 8:52 PM CDT
In force
17 hr
Issued by
NWS La Crosse, WI
Flood severity
None

Counties Allamakee County, IA, Clayton County, IA, Fayette County, IA, Crawford County, WI, Grant County, WI, Richland County, WI, Vernon County, WI

The radar

The La Crosse radar (KARX), 75 km from the middle of the area, began a volume at 08:53 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, 8.9 hours before the alert went out and 277 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-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 2008-03-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2008-03-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 255 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1854 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
255 m²/s²
0-3 km storm-relative helicity
436 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS La Crosse, WI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 30, 3:44 AM CDTWinter Storm WatchARXTaylor12 hr
Mar 30, 4:00 PM CDTHeavy Snow WarningARXTaylor38 hr
Mar 30, 4:00 PM CDTWinter Weather AdvisoryARXBuffalo, Clark38 hr

Nearby

Flood Watches in Wisconsin, 2008Flood Watches in Iowa, 2008Every flood watch in 2008

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.