A storm moved through northern Floyd County early during the 7 PM hour. Although it was short lived and not of severe strength, a burst of stronger winds occurred in an isolated area west of Prestonsburg as the storm began to dissipate.
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The episode as NWS JKL wrote it up.
A storm moved through northern Floyd County early during the 7 PM hour. Although it was short lived and not of severe strength, a burst of stronger winds occurred in an isolated area west of Prestonsburg as the storm began to dissipate.
The local office's own words before the first event, 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 the first event at Jul 27, 5:48 PM EST, 27 minutes earlier.
AREA FORECAST DISCUSSION National Weather Service Jackson KY 648 PM EDT Mon Jul 27 2020 .UPDATE... Issued at 648 PM EDT MON JUL 27 2020 Kept pops the same for the first couple hours of the evening shift, but based on the trends, pops have generally been isolated at best. The concern, however, is that we are still very warm and humid, and we do still have a front approaching from our west...though showers and thunderstorms seem to be dissipating along this as they continue our direction. Based on this, went ahead and reduced pops some for the next couple of hours, with mostly isolated pops next hour, except for in the far south and far north, closer to the line of convection moving towards us. then blended into current forecast, which keeps chance pops across the north, but has them slowly dropping off across the southern half of the CWA through the first half of the overnight. This really only resulted in a few hours worth of pop/weather upgrades, but seems to put the current forecast better in line with the ongoing coverage. Also loaded in the latest observations for temps, dew points, and winds to make sure the near term forecast was on track with the ongoing conditions for this as well. Only minor changes resulted. All updates have been published and sent to NDFD/web. && .SHORT TERM...(This evening through Tuesday night) Issued at 325 PM EDT MON JUL 27 2020 The afternoon surface analysis shows a cold front pushing into portions of the Ohio Valley and a pre-frontal trough axis ahead of this. These features will be the focus for convection over the period as it sags into the lower Ohio Valley and heights fall with a mid level trough. Given this did keep the PoPs a little more in the scattered range north of the Mountain Parkway into the late evening. However, this will wane through the night in coverage, as we loose the better instability. Then by tomorrow this front will be reactivated with scattered to numerous showers and thunderstorms given the ample moisture and increasing instability. The best coverage in convection is expected to be generally along and south of I-64. The severe potential looks meager given the lack of shear, but the ample PWATs of around 2 inch could lead to locally heavy rainfall. These showers and thunderstorms will decrease in coverage Tuesday night, but did keep some isolated to scattered coverage in the southeast through the night. Did include fog both tonight and Tuesday night in the river valleys, but coverage could be increased depending on afternoon rainfall. The temperatures will remain near average for the time of year in most cases. .LONG TERM...(Wednesday through Monday) Issued at 508 PM EDT MON JUL 27 2020 Solutions continue to gel with respect to the eastern CONUS. Models are beginning to show some consistency as well and advertise an unusually progressive pattern considering the time of the year. Broad mid/upper level low has set up just south of Hudson Bay, part of what will become a mean trough through time and which will extend southward into the Ohio Valley. Several vort lobes rotate around the parent low before being replaced by a second major low pressure system towards the end of the period. Further southwest, a short wave trough will ride over a ridge axis positioned across the Rockies at the start of the extended. This trough will slide southeast across the Plains and into the lower Ohio and Tennessee Valley by the end of the forecast window. At the surface, a cold frontal boundary will have just stalled out across eastern Kentucky at the beginning of the period. This feature will become the focus of unsettled weather for eastern Kentucky, extending out for several days as a series of two or three surface waves track roughly west to east through the Ohio Valley along the frontal zone. Two main waves or rounds of weather appear to have the largest impact on eastern Kentucky. The first will be a disturbance that pushes through the region late Thursday into Friday. The second will be a wave associated with the aforementioned shortwave through moving out of the Rockies. This second system will reflect a surface low at the surface that will ride straight up into the Ohio Valley, most likely Sunday into Monday. Sensible weather features a break from the heat of the past week. The combination of the frontal boundary in the area, additional cloud cover, and increased likelihood of rainfall will tend to keep temperatures cooler, or much closer to normal. Daily highs will range in the lower to mid 80s and overnight lows will generally run in the upper 60s, with our typically cooler locations possibly dipping into the mid 60s from time to time. While the opportunity for rain will exist about anytime, highest PoPs will mainly occur with the initial arrival of the surface cold front into the area and then with any waves of low pressure that track through the region along the frontal zone thereafter. PoP should also have a distinct diurnal flavor. Moisture will pool along this frontal zone, with PWATs climbing to around 2 inches or higher across portions of the area late Thursday into Thursday night. A nearly saturated column, high freezing levels, low to moderate CAPE profiles, and strong parallel flow along the surface boundary will likely set the stage for some locally heavy rainfall late Thursday into Thursday night. Models continue to advertise some moderate shear (effective shear 30-40 kts) in place across the area as well. Thus a few strong storms can not be ruled out. Storm motion is quite high, westerly at around 30 kts. Thus any hydro threat will be greatest for areas that experience training of storms. Those areas of greatest threat will become more clear once the location of the stalled boundary become more evident. Will continued to broad brush the mention of this threat in the HWO and other products until more details come to light. && .AVIATION...(For the 18Z TAFS through 18Z Tuesday afternoon) ISSUED AT 132 PM EDT MON JUL 27 2020 Overall most sites are starting off VFR, but SYM has a storm over the aerodrome and this could lead to IFR or lower CIGs and Vis at times. Opted to add a tempo group to handle this site for now. Outside this expect isolated to scattered showers and thunderstorms through the afternoon and even into the evening. Given this will stick with VCTS until there is a better handle on if this will affect the sites specifically. The winds will remain light and variable through the TAF period unless a thunderstorms or outflow works into the aerodrome. && .JKL WATCHES/WARNINGS/ADVISORIES... NONE. && UPDATE...JMW SHORT TERM...DJ LONG TERM...RAY AVIATION...DJ
Hazardous Weather Outlook National Weather Service Jackson KY 326 PM EDT Mon Jul 27 2020 KYZ044-050>052-058>060-068-069-079-080-083>088-104-106>120-282230- 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 326 PM EDT Mon Jul 27 2020 This hazardous weather outlook is for portions of eastern Kentucky. .DAY ONE...This Afternoon and Tonight. Isolated to scattered thunderstorms are possible through the remainder of the afternoon and could linger into the night mainly along and north of the Mountain Parkway. Locally heavy rainfall is possible from any of the stronger storms. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Thunderstorms are possible at times Tuesday through Sunday and will be most widespread during the afternoon and evening hours. Heavy rainfall will also be possible at times as a frontal boundary stalls over the area. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated at this time. DJ/RAY
The Jackson,KY radar (KJKL), 43 km away, was scanning. The volume nearest the first event began at 23:14 UTC.
1 thunderstorm wind. Local standard time, as filed.
A burst of wind occurred in the Woodland Hills subdivision west of Prestonsburg, downing several trees and blocking the roadway. Large limb debris was also observed throughout the subdivision.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Kentucky in 2020Every state in 2020This day in weather historyWarnings in Kentucky, July 2020
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 896527.