Alert archive / Kentucky / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 117, NWS Jackson, KY
NWS Jackson, KY issued this severe thunderstorm warning at Aug 30, 2001, 3:46 PM EDT for Johnson County, Kentucky. It was in force for 44 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Aug 30, 2001, 3:46 PM EDT (19:46 UTC)
- Expired
- Aug 30, 2001, 4:30 PM EDT
- In force
- 44 min
- Issued by
- NWS Jackson, KY
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Johnson County, KY
The radar
The Jackson,KY radar (KJKL), 51 km from the middle of the area, began a volume at 19:49 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 30, 3:55 PM EDT | Thunderstorm Wind | Paintsville, KY | Trees were blown down along Route 40. |
| Aug 30, 4:16 PM EDT | Thunderstorm Wind | Paintsville, KY | Trees blown down along Route 825. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Cncnati-Daytn, OH (KILN), launched 12:00Z, 7.8 hours before the alert went out and 195 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
- 1069 J/kg
- Mixed-layer CIN
- -39 J/kg
- Mixed-layer LCL
- 801 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 89 m²/s²
- 0-3 km storm-relative helicity
- 88 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Aug 30, 2:40 PM EDT, 1 hour 6 minutes earlier.
Area forecast discussion, Aug 30, 2:40 PM EDT, 1 hour 6 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE JACKSON KY 240 PM EDT THU AUG 30 2001 THE NGM...ETA AND AVN MODELS ALL SHOW THAT CLOUDS WILL INCREASE TONIGHT AND IT WILL RAIN MOST OF THE DAY FRIDAY. THE ETA MODEL MOISTURE FIELD IS PREFERRED...WITH THE MOS WEAKER AND THE AVN STRONGER. DEEP MOISTURE WILL ADVECT UP FROM THE SOUTHWEST OVERNIGHT AS A SHORT WAVE TROUGH DIGS SOUTHEAST FROM THE GREAT LAKES REGION. THE ETA FORECAST SOUNDINGS SHOW THAT LOWER TROPOSPHERIC FLOW INCREASES SOME BY FRIDAY AND PRECIPITABLE WATER STAYS AROUND 1.5 INCHES. SINCE THE HEAVIER RAIN CELLS ON FRIDAY SHOULD HAVE A 15 TO 20 MPH MOVEMENT...AND THE LATEST HPC GUIDANCE SHOWS A HALF INCH AREAL AVERAGE FOR EASTERN KY THIS EVENING THROUGH THE DAY FRIDAY... NO HEAVY RAIN PROBLEMS ARE EXPECTED. A SURFACE COLD FRONT APPROACHING FROM THE UPPER MIDWEST WILL PUSH SOUTH THROUGH EASTERN KY BY EARLY SATURDAY...WITH RESIDUAL MORNING SHOWERS OVER THE FAR SOUTHEAST. THE NGM POPS WILL BE INCREASED FOR TONIGHT AND FRIDAY...OTHERWISE THE TEMPERATURE GUIDANCE LOOKS GOOD. THE LATEST RUNS OF THE AVN AND MRF MODELS SUPPORT THE CURRENT EXTENDED FORECAST...SO NO SIGNIFICANT CHANGES ARE PLANNED. JKL 68/80 63/78 5760 LOZ 67/80 63/80 5761 .JKL...NONE. SCHAUB
Nearby
Severe Thunderstorm Warnings in Kentucky, 2001Every severe thunderstorm warning in 2001
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.