Alert archive / Michigan / Frost Advisories in 2021
Frost Advisory 8, NWS Northern Indiana
NWS Northern Indiana issued this frost advisory at Oct 23, 2021, 2:41 PM EDT for Williams County, Ohio; Branch County, Hillsdale County, Saint Joseph County, Michigan. It took effect at Oct 24, 2021, 2:00 AM EDT. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Oct 23, 2021, 2:41 PM EDT (18:41 UTC)
- In effect from
- Oct 24, 2021, 2:00 AM EDT
- Expired
- Oct 24, 2021, 8:00 AM EDT
- In force
- 6 hr
- Issued by
- NWS Northern Indiana
Counties Branch County, MI, Hillsdale County, MI, Saint Joseph County, MI, Williams County, OH
The radar
The Northern Indiana radar (KIWX), 81 km from the middle of the area, began a volume at 18:44 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
Detroit, MI (KDTX), launched 12:00Z, 6.7 hours before the alert went out and 160 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
- 679 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 69 m²/s²
- 0-3 km storm-relative helicity
- 144 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
846 WWUS73 KIWX 231841 NPWIWX URGENT - WEATHER MESSAGE National Weather Service Northern Indiana 241 PM EDT Sat Oct 23 2021 MIZ079>081-OHZ001-240245- /O.NEW.KIWX.FR.Y.0008.211024T0600Z-211024T1200Z/ St. Joseph-Branch-Hillsdale-Williams- Including the cities of Sturgis, Three Rivers, White Pigeon, Mendon, Coldwater, Bronson, Hillsdale, Jonesville, Litchfield, Bryan, Montpelier, and Edgerton 241 PM EDT Sat Oct 23 2021 ...FROST ADVISORY IN EFFECT FROM 2 AM TO 8 AM EDT SUNDAY... * WHAT...Temperatures in the mid to upper 30s will result in frost formation. * WHERE...In Ohio, Williams County. In Michigan, St. Joseph, Branch and Hillsdale Counties. * WHEN...From 2 AM to 8 AM EDT Sunday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
3 follow-up statements
321 WWUS73 KIWX 240219 NPWIWX URGENT - WEATHER MESSAGE National Weather Service Northern Indiana 1019 PM EDT Sat Oct 23 2021 MIZ079>081-OHZ001-241100- /O.CON.KIWX.FR.Y.0008.211024T0600Z-211024T1200Z/ St. Joseph-Branch-Hillsdale-Williams- Including the cities of Sturgis, Three Rivers, White Pigeon, Mendon, Coldwater, Bronson, Hillsdale, Jonesville, Litchfield, Bryan, Montpelier, and Edgerton 1019 PM EDT Sat Oct 23 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 8 AM EDT SUNDAY... * WHAT...Temperatures in the mid to upper 30s will result in frost formation. * WHERE...In Ohio, Williams County. In Michigan, St. Joseph, Branch and Hillsdale Counties. * WHEN...From 2 AM to 8 AM EDT Sunday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
791 WWUS73 KIWX 240756 NPWIWX URGENT - WEATHER MESSAGE National Weather Service Northern Indiana 356 AM EDT Sun Oct 24 2021 MIZ079>081-OHZ001-241200- /O.CON.KIWX.FR.Y.0008.000000T0000Z-211024T1200Z/ St. Joseph-Branch-Hillsdale-Williams- Including the cities of Sturgis, Three Rivers, White Pigeon, Mendon, Coldwater, Bronson, Hillsdale, Jonesville, Litchfield, Bryan, Montpelier, and Edgerton 356 AM EDT Sun Oct 24 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... * WHAT...Temperatures in the mid 30s will result in frost formation. * WHERE...In Ohio, Williams County. In Michigan, St. Joseph, Branch and Hillsdale Counties. * WHEN...Through 8 AM EDT Sunday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
022 WWUS73 KIWX 241151 NPWIWX URGENT - WEATHER MESSAGE National Weather Service Northern Indiana 751 AM EDT Sun Oct 24 2021 MIZ079>081-OHZ001-241300- /O.EXP.KIWX.FR.Y.0008.000000T0000Z-211024T1200Z/ St. Joseph-Branch-Hillsdale-Williams- Including the cities of Sturgis, Three Rivers, White Pigeon, Mendon, Coldwater, Bronson, Hillsdale, Jonesville, Litchfield, Bryan, Montpelier, and Edgerton 751 AM EDT Sun Oct 24 2021 ...FROST ADVISORY WILL EXPIRE AT 8 AM EDT THIS MORNING... Temperatures will start to warm over the next couple of hours. $$
The office that day
Everything else NWS Northern Indiana issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 23, 2:29 PM EDT | Flood Watch | IWX | Defiance, Fulton, Henry, Paulding, Putnam, Williams | 37 hr |
Nearby
Frost Advisories in Michigan, 2021Frost Advisories in Ohio, 2021Every frost 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.