Alert archive / Kentucky / Flash Flood Watches in 2017

Flash Flood Watch 6, NWS Paducah, KY

June 22, 201722 counties in Kentucky; 17 counties in Illinois; 4 counties in Missouri

NWS Paducah, KY issued this flash flood watch at Jun 22, 2017, 9:31 AM CDT for 22 counties in Kentucky; 17 counties in Illinois; 4 counties in Missouri. It took effect at Jun 22, 2017, 1:00 PM CDT. It was in force for 28 hr.

The area

The counties it named.

The facts

Issued: Jun 22, 2017, 9:31 AM CDT (14:31 UTC)
In effect from: Jun 22, 2017, 1:00 PM CDT
Expired: Jun 23, 2017, 4:34 PM CDT
In force: 28 hr
Issued by: NWS Paducah, KY
Flood severity: None

All 43 counties

Alexander County, IL, Edwards County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Jefferson County, IL, Johnson County, IL, Massac County, IL, Pope County, IL, Pulaski County, IL, Saline County, IL, Union County, IL, Wabash County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Ballard County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Christian County, KY, Crittenden County, KY, Daviess County, KY, Fulton County, KY, Graves County, KY, Henderson County, KY, Hickman County, KY, Hopkins County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Muhlenberg County, KY, Todd County, KY, Trigg County, KY, Union County, KY, Webster County, KY, Cape Girardeau County, MO, Mississippi County, MO, New Madrid County, MO, Scott County, MO

The radar

The Paducah radar (KPAH), 45 km from the middle of the area, began a volume at 14:34 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

Nashville Metro, TN (KBNA), launched 12:00Z, 2.5 hours before the alert went out and 213 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: -120 J/kg
Mixed-layer LCL: 768 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 10 m²/s²
0-3 km storm-relative helicity: 17 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 flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Paducah, KY wrote its last area forecast discussion before this flash flood watch went out at Jun 22, 2:49 AM CDT, 6 hours 42 minutes earlier.

Area forecast discussion, Jun 22, 2:49 AM CDT, 6 hours 42 minutes before

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Hazardous weather outlook, Jun 22, 3:31 AM CDT, 6 hours before

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<body>
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    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 22, 9:08 AM CDT	River Flood Warning	PAH	Muhlenberg	5 days

Nearby

Flash Flood Watches in Kentucky, 2017 Flash Flood Watches in Illinois, 2017 Flash Flood Watches in Missouri, 2017 Every flash flood watch in 2017

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.