Alert archive / Kentucky / Flash Flood Warnings in 1997

Flash Flood Warning 146, NWS Louisville, KY

June 21, 1997Grayson County, Kentucky

NWS Louisville, KY issued this flash flood warning at Jun 21, 1997, 11:25 AM CDT for Grayson County, Kentucky. It was in force for 60 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 21, 1997, 11:25 AM CDT (16:25 UTC)
Expired
Jun 21, 1997, 12:25 PM CDT
In force
60 min
Issued by
NWS Louisville, KY
Area
Whole counties

County Grayson County, KY

The radar

The Louisville radar (KLVX), 67 km from the middle of the area, began a volume at 16:28 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, 4.4 hours before the alert went out and 150 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, Nashville Metro, TN at 12:00Z on 1997-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1908 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, Nashville Metro, TN at 12:00Z on 1997-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -25 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
1908 J/kg
Mixed-layer CIN
-36 J/kg
Mixed-layer LCL
698 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
-25 m²/s²
0-3 km storm-relative helicity
6 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 11:25 AM CDTSevere Thunderstorm WarningLMKGrayson60 min
Jun 21, 11:34 AM CDTFlash Flood WarningLMKEdmonson, Warren2 hr
Jun 21, 11:44 AM CDTSevere Thunderstorm WarningLMKEdmonson61 min
Jun 21, 12:26 PM CDTFlash Flood WarningLMKHardin64 min
Jun 21, 12:26 PM CDTSevere Thunderstorm WarningLMKHardin59 min
Jun 21, 12:26 PM CDTSevere Thunderstorm WarningLMKHardin64 min
Jun 21, 1:22 PM CDTFlash Flood WarningLMKBullitt, Jefferson68 min
Jun 21, 1:22 PM CDTSevere Thunderstorm WarningLMKBullitt, Jefferson68 min
Jun 21, 1:48 PM CDTFlash Flood WarningLMKOldham77 min
Jun 21, 3:25 PM CDTFlash Flood WarningLMKWarren65 min

Nearby

Flash Flood Warnings in Kentucky, 1997Every flash flood warning in 1997

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.