Alert archive / Indiana / Hard Freeze Watches in 2012

Hard Freeze Watch 2, NWS Northern Indiana

April 25, 201221 counties in Indiana; 8 counties in Ohio; 4 counties in Michigan

NWS Northern Indiana issued this hard freeze watch at Apr 25, 2012, 3:07 PM EDT for 21 counties in Indiana; 8 counties in Ohio; 4 counties in Michigan. It took effect at Apr 27, 2012, 2:00 AM EDT. It was in force for .

The area

The counties it named.

The facts

Issued: Apr 25, 2012, 3:07 PM EDT (19:07 UTC)
In effect from: Apr 27, 2012, 2:00 AM EDT
Expired: Apr 26, 2012, 2:59 PM EDT
In force
Issued by: NWS Northern Indiana

All 33 counties

Adams County, IN, Allen County, IN, Blackford County, IN, Cass County, IN, DeKalb County, IN, Elkhart County, IN, Fulton County, IN, Grant County, IN, Huntington County, IN, Jay 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, Wells County, IN, White County, IN, Whitley County, IN, Branch County, MI, Cass County, MI, Hillsdale County, MI, Saint Joseph County, MI, Allen County, OH, Defiance County, OH, Fulton County, OH, Henry County, OH, Paulding County, OH, Putnam County, OH, Van Wert County, OH, Williams County, OH

The radar

The Northern Indiana radar (KIWX), 38 km from the middle of the area, began a volume at 19:11 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

Lincoln, IL (KILX), launched 12:00Z, 7.1 hours before the alert went out and 299 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: 5 J/kg
Mixed-layer CIN: -495 J/kg
Mixed-layer LCL: 1292 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 82 m²/s²
0-3 km storm-relative helicity: 174 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this hard freeze 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 hard freeze watch went out at Apr 25, 3:41 AM EDT, 11 hours 26 minutes earlier.

Area forecast discussion, Apr 25, 3:41 AM EDT, 11 hours 26 minutes before

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Hazardous weather outlook, Apr 25, 4:13 AM EDT, 10 hours 54 minutes before

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The office that day

Everything else NWS Northern Indiana issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 25, 3:26 PM EDT	Small Craft Advisory	IWX		43 hr

Nearby

Hard Freeze Watches in Indiana, 2012 Hard Freeze Watches in Ohio, 2012 Hard Freeze Watches in Michigan, 2012 Every hard freeze watch 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.