Alert archive / Michigan / Flood Watches in 2006

Flood Watch 2, NWS Grand Rapids, MI

October 3, 200623 counties in Michigan

NWS Grand Rapids, MI issued this flood watch at Oct 3, 2006, 5:26 PM EDT for 23 counties in Michigan. It took effect at Oct 3, 2006, 10:00 PM EDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: Oct 3, 2006, 5:26 PM EDT (21:26 UTC)
In effect from: Oct 3, 2006, 10:00 PM EDT
Expired: Oct 4, 2006, 4:39 AM EDT
In force: 7 hr
Issued by: NWS Grand Rapids, MI
Flood severity: None

All 23 counties

Allegan County, MI, Barry County, MI, Calhoun County, MI, Clare County, MI, Clinton County, MI, Eaton County, MI, Gratiot County, MI, Ingham County, MI, Ionia County, MI, Isabella County, MI, Jackson County, MI, Kalamazoo County, MI, Kent County, MI, Lake County, MI, Mason County, MI, Mecosta County, MI, Montcalm County, MI, Muskegon County, MI, Newaygo County, MI, Oceana County, MI, Osceola County, MI, Ottawa County, MI, Van Buren County, MI

The radar

The Grand Rapids radar (KGRR), 27 km from the middle of the area, began a volume at 21:27 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, 9.4 hours before the alert went out and 266 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: 15 J/kg
Mixed-layer CIN: -620 J/kg
Mixed-layer LCL: 896 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 13 m²/s²
0-3 km storm-relative helicity: 47 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 flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Grand Rapids, MI wrote its last area forecast discussion before this flood watch went out at Oct 3, 4:15 PM EDT, 1 hour 11 minutes earlier.

Area forecast discussion, Oct 3, 4:15 PM EDT, 1 hour 11 minutes before

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Hazardous weather outlook, Oct 3, 5:02 PM EDT, 24 minutes before

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The office that day

Everything else NWS Grand Rapids, MI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 2, 8:04 PM EDT	Special Marine Warning	GRR		116 min
Oct 2, 8:28 PM EDT	Severe Thunderstorm Warning	GRR	Kent, Montcalm, Newaygo	47 min
Oct 2, 8:48 PM EDT	Severe Thunderstorm Warning	GRR	Oceana	36 min
Oct 2, 9:15 PM EDT	Special Marine Warning	GRR		90 min
Oct 2, 10:05 PM EDT	Severe Thunderstorm Warning	GRR	Jackson	26 min
Oct 3, 7:48 AM EDT	Dense Fog Advisory	GRR	Allegan, Barry, Calhoun, Clinton, Eaton, Ingham and 7 more	3 hr

Nearby

Flood Watches in Michigan, 2006 Every flood watch in 2006

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.