Alert archive / Indiana / Frost Advisories in 2022

Frost Advisory 1, NWS Northern Indiana

October 7, 202210 counties in Indiana; Saint Joseph County, Michigan

NWS Northern Indiana issued this frost advisory at Oct 7, 2022, 3:02 AM EDT for 10 counties in Indiana; Saint Joseph County, Michigan. It took effect at Oct 8, 2022, 2:00 AM EDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued
Oct 7, 2022, 3:02 AM EDT (07:02 UTC)
In effect from
Oct 8, 2022, 2:00 AM EDT
Expired
Oct 8, 2022, 9:02 AM EDT
In force
7 hr
Issued by
NWS Northern Indiana

Counties Cass County, IN, Elkhart County, IN, Fulton County, IN, Kosciusko County, IN, LaPorte County, IN, Miami County, IN, Pulaski County, IN, Starke County, IN, Wabash County, IN, White County, IN, Saint Joseph County, MI

The radar

The Northern Indiana radar (KIWX), 50 km from the middle of the area, began a volume at 07:01 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

Lincoln, IL (KILX), launched 00:00Z, 7.0 hours before the alert went out and 229 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, Lincoln, IL at 00:00Z on 2022-10-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 67 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, Lincoln, IL at 00:00Z on 2022-10-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 57 square meters per square second.19395878Sfc1 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
67 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
1597 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
57 m²/s²
0-3 km storm-relative helicity
68 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Northern Indiana issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 7, 3:02 AM EDTFreeze WatchIWXAdams, Allen, Blackford, DeKalb, Grant, Huntington and 10 more12 hr
Oct 7, 2:40 PM EDTFreeze WarningIWXAdams, Allen, Blackford, DeKalb, Grant, Huntington and 6 more18 hr

Nearby

Frost Advisories in Indiana, 2022Frost Advisories in Michigan, 2022Every frost advisory in 2022

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.