Alert archive / Indiana / Flood Watches in 2008

Flood Watch 8, NWS Northern Indiana

September 12, 200815 counties in Indiana; 4 counties in Ohio; 4 counties in Michigan

NWS Northern Indiana issued this flood watch at Sep 12, 2008, 3:33 PM EDT for 15 counties in Indiana; 4 counties in Ohio; 4 counties in Michigan. It took effect at Sep 13, 2008, 5:00 AM EDT. It was in force for 35 hr.

The area

The counties it named.

The facts

Issued: Sep 12, 2008, 3:33 PM EDT (19:33 UTC)
In effect from: Sep 13, 2008, 5:00 AM EDT
Expired: Sep 14, 2008, 4:02 PM EDT
In force: 35 hr
Issued by: NWS Northern Indiana
Flood severity: None

All 23 counties

Allen County, IN, Cass County, IN, DeKalb County, IN, Elkhart County, IN, Fulton County, IN, LaGrange County, IN, Marshall County, IN, Miami County, IN, Noble County, IN, Pulaski County, IN, Starke County, IN, Steuben County, IN, Wabash County, IN, White County, IN, Whitley County, IN, Branch County, MI, Cass County, MI, Hillsdale County, MI, Saint Joseph County, MI, Defiance County, OH, Fulton County, OH, Henry County, OH, Williams County, OH

The radar

The Northern Indiana radar (KIWX), 16 km from the middle of the area, began a volume at 19:33 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 7.6 hours before the alert went out and 258 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: 887 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 668 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 122 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.6

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 Northern Indiana wrote its last area forecast discussion before this flood watch went out at Sep 12, 3:19 PM EDT, 14 minutes earlier.

Area forecast discussion, Sep 12, 3:19 PM EDT, 14 minutes before

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Hazardous weather outlook, Sep 12, 4:03 AM EDT, 11 hours 30 minutes before

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Nearby

Flood Watches in Indiana, 2008 Flood Watches in Ohio, 2008 Flood Watches in Michigan, 2008 Every 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.