Alert archive / Kentucky / Special Weather Statements in 2021

Special Weather Statement, NWS Jackson, KY

July 1, 2021Powell County, Kentucky

NWS Jackson, KY issued this special weather statement at Jul 1, 2021, 7:44 AM EDT for Powell County, Kentucky. It was in force for 46 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 1, 2021, 7:44 AM EDT (11:44 UTC)
Expired
Jul 1, 2021, 8:30 AM EDT
In force
46 min
Issued by
NWS Jackson, KY

County Powell County, KY

The radar

The Jackson,KY radar (KJKL), 62 km from the middle of the area, began a volume at 11:48 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, 11.7 hours before the alert went out and 173 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 2021-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1557 joules per kilogram.LCLLFCEL10008507005003002001001 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 2021-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -3 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
1557 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
768 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
-3 m²/s²
0-3 km storm-relative helicity
53 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 1, 7:31 AM EDT, 13 minutes earlier.

Area forecast discussion, Jul 1, 7:31 AM EDT, 13 minutes before
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Hazardous weather outlook, Jul 1, 4:10 AM EDT, 3 hours 34 minutes before
Hazardous Weather Outlook
National Weather Service Jackson KY
410 AM EDT Thu Jul 1 2021

KYZ044-050>052-058>060-068-069-079-080-083>088-104-106>120-021115-
Fleming-Montgomery-Bath-Rowan-Estill-Powell-Menifee-Rockcastle-
Jackson-Pulaski-Laurel-Wayne-McCreary-Whitley-Knox-Bell-Harlan-
Elliott-Morgan-Johnson-Wolfe-Magoffin-Floyd-Lee-Breathitt-Knott-
Owsley-Perry-Clay-Leslie-Letcher-Martin-Pike-
Including the cities of Flemingsburg, Camargo, Jeffersonville,
Mount Sterling, Owingsville, Morehead, Irvine, Ravenna,
Clay City, Stanton, Frenchburg, Brodhead, Mount Vernon, McKee,
Annville, Burnside, Somerset, London, Monticello, Stearns,
Whitley City, Corbin, Williamsburg, Barbourville, Middlesboro,
Pineville, Cumberland, Harlan, Sandy Hook, West Liberty,
Paintsville, Campton, Salyersville, Prestonsburg, Wheelwright,
Beattyville, Jackson, Hindman, Pippa Passes, Booneville, Hazard,
Manchester, Hyden, Jenkins, Whitesburg, Inez, Coal Run,
Elkhorn City, Pikeville, and South Williamson
410 AM EDT Thu Jul 1 2021

...FLASH FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT...

This hazardous weather outlook is for portions of eastern Kentucky.

.DAY ONE...Today and Tonight.

Thunderstorms can be expected at times today and tonight as a
cold front slowly moves through the area. The storms will bring
heavy rainfall to a few locations, which enhances the potential
for flash flooding.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

There is a small chance for thunderstorms in the southeast portion
of the area on Friday.

Thunderstorms will also be possible over much of the area from
Tuesday afternoon through Wednesday.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report any instances of flooding today
and tonight.

GREIF/HAS

In the hours before

Special weather statement, Jul 1, 7:44 AM 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 1, 12:13 AM EDTSpecial Weather StatementJKLRockcastle47 min
Jul 1, 12:22 AM EDTSpecial Weather StatementJKLPulaski38 min
Jul 1, 12:48 AM EDTSpecial Weather StatementJKLPulaski42 min
Jul 1, 1:00 AM EDTSpecial Weather StatementJKLRockcastle45 min
Jul 1, 1:14 AM EDTSevere Thunderstorm WarningJKLJackson, Laurel, Pulaski, Rockcastle46 min
Jul 1, 1:28 AM EDTSpecial Weather StatementJKLJackson, Rockcastle47 min
Jul 1, 9:43 AM EDTAreal Flood AdvisoryJKLEstill, Powell3 hr
Jul 1, 10:34 AM EDTFlash Flood WarningJKLEstill, Powell4 hr
Jul 1, 2:31 PM EDTAreal Flood AdvisoryJKLEstill, Powell3 hr
Jul 1, 3:19 PM EDTAreal Flood WarningJKLEstill, Menifee, Powell3 hr
Jul 1, 3:37 PM EDTRiver Flood AdvisoryJKLEstill, Powell37 hr
Jul 1, 3:52 PM EDTAreal Flood AdvisoryJKLClay, Knott, Knox, Laurel, Leslie, McCreary and 2 more3 hr
Jul 1, 4:23 PM EDTFlash Flood WarningJKLClay, Knox, Laurel, Whitley4 hr
Jul 1, 5:15 PM EDTFlash Flood WarningJKLKnott, Leslie, Perry3 hr

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.