Alert archive / Indiana / Freeze Warnings in 2020

Freeze Warning 1, NWS Northern Indiana

April 13, 202012 counties in Indiana; Allen County, Van Wert County, Ohio

NWS Northern Indiana issued this freeze warning at Apr 13, 2020, 3:39 PM EDT for 12 counties in Indiana; Allen County, Van Wert County, Ohio. It took effect at Apr 14, 2020, 12:00 AM EDT. It was in force for 9 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 13, 2020, 3:39 PM EDT (19:39 UTC)
In effect from: Apr 14, 2020, 12:00 AM EDT
Expired: Apr 14, 2020, 9:00 AM EDT
In force: 9 hr
Issued by: NWS Northern Indiana

Counties Adams County, IN, Blackford County, IN, Cass County, IN, Fulton County, IN, Grant County, IN, Huntington County, IN, Jay County, IN, Miami County, IN, Pulaski County, IN, Wabash County, IN, Wells County, IN, White County, IN, Allen County, OH, Van Wert County, OH

The radar

The Northern Indiana radar (KIWX), 68 km from the middle of the area, began a volume at 19:42 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, 7.7 hours before the alert went out and 263 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 651 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: -100 m²/s²
0-3 km storm-relative helicity: -60 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 freeze warning 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 freeze warning went out at Apr 13, 1:17 PM EDT, 2 hours 22 minutes earlier.

Area forecast discussion, Apr 13, 1:17 PM EDT, 2 hours 22 minutes before

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Hazardous weather outlook, Apr 13, 4:01 AM EDT, 11 hours 38 minutes before

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In the hours before

Local storm report, Apr 13, 1:58 PM EDT, 1 hour 41 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 13, 5:15 PM EDT	Special Weather Statement	IWX	Allen, Defiance, Henry, Paulding, Putnam, Van Wert	7 hr

Nearby

Freeze Warnings in Indiana, 2020 Freeze Warnings in Ohio, 2020 Every freeze warning in 2020

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.