Alert archive / Minnesota / Frost Advisories in 2020
Frost Advisory 3, NWS Duluth, MN
NWS Duluth, MN issued this frost advisory at Jun 11, 2020, 7:32 PM CDT for 4 counties in Minnesota. It took effect at Jun 12, 2020, 1:00 AM CDT. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Jun 11, 2020, 7:32 PM CDT (00:32 UTC)
- In effect from
- Jun 12, 2020, 1:00 AM CDT
- Expired
- Jun 12, 2020, 7:00 AM CDT
- In force
- 6 hr
- Issued by
- NWS Duluth, MN
Counties Cook County, MN, Koochiching County, MN, Lake County, MN, Saint Louis County, MN
The radar
The Duluth radar (KDLH), 107 km from the middle of the area, began a volume at 00:31 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
Green Bay/Straub, WI (KGRB), launched 00:00Z, 0.5 hours before the alert went out and 478 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
- 10 J/kg
- Mixed-layer CIN
- -30 J/kg
- Mixed-layer LCL
- 1884 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 81 m²/s²
- 0-3 km storm-relative helicity
- 93 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The office that day
Everything else NWS Duluth, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 7:22 AM CDT | Frost Advisory | DLH | Carlton, Cook, Itasca, Koochiching, Lake, Saint Louis | 23 hr |
Nearby
Frost Advisories in Minnesota, 2020Every frost advisory in 2020
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.