Alert archive / Kentucky / Special Weather Statements in 2021

Special Weather Statement, NWS Jackson, KY

July 15, 2021Clay County, Kentucky

NWS Jackson, KY issued this special weather statement at Jul 15, 2021, 9:40 PM EDT for Clay County, Kentucky. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 15, 2021, 9:40 PM EDT (01:40 UTC)
Expired
Jul 15, 2021, 10:30 PM EDT
In force
50 min
Issued by
NWS Jackson, KY

County Clay County, KY

The radar

The Jackson,KY radar (KJKL), 65 km from the middle of the area, began a volume at 01:40 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, 1.7 hours before the alert went out and 247 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-pSkew-T log-p diagram, Cncnati-Daytn, OH at 00:00Z on 2021-07-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1123 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 00:00Z on 2021-07-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 90 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1123 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
1232 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
90 m²/s²
0-3 km storm-relative helicity
94 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.4

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Jackson, KY wrote its last area forecast discussion before this special weather statement went out at Jul 15, 8:15 PM EDT, 1 hour 25 minutes earlier.

Area forecast discussion, Jul 15, 8:15 PM EDT, 1 hour 25 minutes before
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Hazardous weather outlook, Jul 15, 4:23 PM EDT, 5 hours 17 minutes before
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In the hours before

Special weather statement, Jul 15, 5:26 PM EDT, 4 hours 14 minutes before
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Special weather statement, Jul 15, 7:48 PM EDT, 1 hour 52 minutes before
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Special weather statement, Jul 15, 9:40 PM EDT, 0 minutes before
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The office that day

Everything else NWS Jackson, KY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 16, 1:09 PM EDTSevere Thunderstorm WarningJKLFleming, Rowan21 min
Jul 16, 1:13 PM EDTSpecial Weather StatementJKLOwsley17 min
Jul 16, 1:51 PM EDTSpecial Weather StatementJKLWolfe24 min
Jul 16, 2:16 PM EDTSpecial Weather StatementJKLRockcastle29 min
Jul 16, 2:43 PM EDTSpecial Weather StatementJKLMorgan32 min
Jul 16, 3:10 PM EDTSpecial Weather StatementJKLLeslie35 min
Jul 16, 3:27 PM EDTSpecial Weather StatementJKLPowell33 min
Jul 16, 4:03 PM EDTSpecial Weather StatementJKLBath, Rowan27 min
Jul 16, 4:20 PM EDTSpecial Weather StatementJKLFleming25 min
Jul 16, 4:34 PM EDTAreal Flood AdvisoryJKLFleming3 hr
Jul 16, 4:41 PM EDTSpecial Weather StatementJKLFleming34 min
Jul 16, 6:25 PM EDTSpecial Weather StatementJKLMartin35 min

Nearby

Special Weather Statements in Kentucky, 2021Every special weather statement in 2021

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.