Alert archive / Indiana / Winter Weather Advisories in 2021
Winter Weather Advisory 8, NWS Louisville, KY
NWS Louisville, KY issued this winter weather advisory at Feb 8, 2021, 3:36 AM EST for 4 counties in Kentucky; 10 counties in Indiana. It took effect at Feb 8, 2021, 4:00 PM EST. It was in force for 15 hr.
The area
The counties it named.
The facts
- Issued
- Feb 8, 2021, 3:36 AM EST (08:36 UTC)
- In effect from
- Feb 8, 2021, 4:00 PM EST
- Expired
- Feb 9, 2021, 7:00 AM EST
- In force
- 15 hr
- Issued by
- NWS Louisville, KY
Counties Clark County, IN, Crawford County, IN, Dubois County, IN, Floyd County, IN, Harrison County, IN, Jefferson County, IN, Orange County, IN, Perry County, IN, Scott County, IN, Washington County, IN, Henry County, KY, Jefferson County, KY, Oldham County, KY, Trimble County, KY
The radar
The Louisville radar (KLVX), 50 km from the middle of the area, began a volume at 08:41 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
Cncnati-Daytn, OH (KILN), launched 00:00Z, 8.6 hours before the alert went out and 215 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1509 m above ground
- 0-6 km bulk shear
- 70 kt
- 0-1 km storm-relative helicity
- 44 m²/s²
- 0-3 km storm-relative helicity
- 116 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this winter weather advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Louisville, KY wrote its last area forecast discussion before this winter weather advisory went out at Feb 8, 3:34 AM EST, 2 minutes earlier.
Area forecast discussion, Feb 8, 3:34 AM EST, 2 minutes before
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</html>Hazardous weather outlook, Feb 7, 4:43 PM EST, 10 hours 53 minutes before
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</html>The office that day
Everything else NWS Louisville, KY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 8, 2:06 PM EST | Winter Storm Watch | LMK | Adair, Allen, Anderson, Barren, Bourbon, Boyle and 43 more | 24 hr |
Nearby
Winter Weather Advisories in Indiana, 2021Winter Weather Advisories in Kentucky, 2021Every winter weather advisory in 2021
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.