Alert archive / Kentucky / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 22, NWS Jackson, KY
NWS Jackson, KY issued this severe thunderstorm warning at Apr 9, 1999, 5:35 AM EDT for McCreary County, Pulaski County, Kentucky. It was in force for 45 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
- Apr 9, 1999, 5:35 AM EDT (09:35 UTC)
- Expired
- Apr 9, 1999, 6:20 AM EDT
- In force
- 45 min
- Issued by
- NWS Jackson, KY
- Area
- Whole counties
Counties McCreary County, KY, Pulaski County, KY
The radar
The Knoxville radar (KMRX), 131 km from the middle of the area, began a volume at 09:38 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 9, 5:30 AM EDT | Tornado Watch | SPC | 3 hr |
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 00:00Z, 9.6 hours before the alert went out and 205 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.
- Mixed-layer CAPE
- 632 J/kg
- Mixed-layer CIN
- -236 J/kg
- Mixed-layer LCL
- 1240 m above ground
- 0-6 km bulk shear
- 77 kt
- 0-1 km storm-relative helicity
- 487 m²/s²
- 0-3 km storm-relative helicity
- 577 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Apr 8, 2:30 PM EDT, 15 hours 5 minutes earlier.
Area forecast discussion, Apr 8, 2:30 PM EDT, 15 hours 5 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE JACKSON KY 230 PM EDT THU APR 8 1999 WARM FRONT SURGING NORTH ACROSS KENTUCKY AT THIS TIME HAS BEEN THE FOCUS FOR SHOWERS AND THUNDERSTORMS. EXPECT MOST THE ACTIVITY TO CONTINUE TO SHIFT NORTHWARD ALONG THE FRONT THIS EVENING. INCREASING UPPER LEVEL DIFFLUENCE MAY KICK OFF A FEW MORE SHOWERS AND STORMS ACROSS THE SOUTHERN TIER BUT THE ACTIVITY IS EXPECTED TO BE MORE SCATTERED. THETA-E RIDGE WILL CONTINUE TO BUILD NORTH INTO EASTERN KENTUCKY TONIGHT...ONLY TO BE SWEPT OUT BY THE COLD FRONT AROUND MIDDAY ON FRIDAY. ETA MODEL SHOWS AIRMASS WILL RAPIDLY DESTABILIZE AHEAD OF THE FRONT OVER EASTERN KENTUCKY...AND WHILE THE NGM IS NOT QUITE AS UNSTABLE...WE WILL GO WITH THE IDEA OF MORE SCATTERED THUNDERSTORMS DEVELOPING AHEAD OF THE FRONT. COOLER AND DRIER AIR NEVER MAKES IT TOO FAR SOUTH OF OUR CWA FRIDAY NIGHT BEFORE UNSTABLE AIR RESURGES NORTH AGAIN ON SATURDAY. WILL INCLUDE CHANCEz POPS FOR SAT...HIGHER THAN FWC. OVERALL FWC TEMPS LOOK GOOD AND WILL NOT STRAY TOO FAR. .JKL...NONE. RAB
The office that day
Everything else NWS Jackson, KY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 9, 5:20 AM EDT | Severe Thunderstorm Warning | JKL | Wayne | 30 min |
| Apr 9, 6:04 AM EDT | Severe Thunderstorm Warning | JKL | Laurel, Whitley | 46 min |
| Apr 9, 6:16 AM EDT | Severe Thunderstorm Warning | JKL | Knox | 34 min |
Nearby
Severe Thunderstorm Warnings in Kentucky, 1999Every severe thunderstorm warning in 1999
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.