Alert archive / Ohio / Freeze Watches in 2016

Freeze Watch 4, NWS Charleston, WV

April 7, 20169 counties in Ohio; 4 counties in Kentucky

NWS Charleston, WV issued this freeze watch at Apr 7, 2016, 3:21 AM EDT for 9 counties in Ohio; 4 counties in Kentucky. It took effect at Apr 8, 2016, 2:00 AM EDT. It was in force for .

The area

The counties it named.

The facts

Issued: Apr 7, 2016, 3:21 AM EDT (07:21 UTC)
In effect from: Apr 8, 2016, 2:00 AM EDT
Expired: Apr 7, 2016, 3:47 PM EDT
In force
Issued by: NWS Charleston, WV

Counties Boyd County, KY, Carter County, KY, Greenup County, KY, Lawrence County, KY, Athens County, OH, Gallia County, OH, Jackson County, OH, Lawrence County, OH, Meigs County, OH, Morgan County, OH, Perry County, OH, Vinton County, OH, Washington County, OH

The radar

The Charleston,WV radar (KRLX), 91 km from the middle of the area, began a volume at 07:25 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 00:00Z, 7.4 hours before the alert went out and 134 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: 7 J/kg
Mixed-layer CIN: -78 J/kg
Mixed-layer LCL: 807 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 462 m²/s²
0-3 km storm-relative helicity: 335 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 watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Charleston, WV wrote its last area forecast discussion before this freeze watch went out at Apr 7, 3:09 AM EDT, 12 minutes earlier.

Area forecast discussion, Apr 7, 3:09 AM EDT, 12 minutes before

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Hazardous weather outlook, Apr 6, 8:29 PM EDT, 6 hours 52 minutes before

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In the hours before

Special weather statement, Apr 7, 12:33 AM EDT, 2 hours 48 minutes before

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The office that day

Everything else NWS Charleston, WV issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 7, 12:33 AM EDT	Special Weather Statement	RLX	Barbour, Boone, Braxton, Cabell, Calhoun, Clay and 28 more	4 hr
Apr 7, 3:47 PM EDT	Freeze Watch	RLX	Barbour, Boone, Braxton, Cabell, Calhoun, Clay and 22 more	12 hr
Apr 7, 3:47 PM EDT	Freeze Warning	RLX	Athens, Gallia, Jackson, Lawrence, Meigs, Morgan and 3 more	18 hr

Nearby

Freeze Watches in Ohio, 2016 Freeze Watches in Kentucky, 2016 Every freeze watch in 2016

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.