IWX issues Frost Advisory valid at Oct 18, 3:00 AM EDT for Eastern St. Joseph, Elkhart, Marshall, Western St. Joseph [IN] till Oct 18, 9:00 AM EDT
061
WWUS73 KIWX 170534
NPWIWX
URGENT - WEATHER MESSAGE
National Weather Service Northern Indiana
134 AM EDT Sat Oct 17 2026
INZ006>009-017-116-216-172100-
/O.UPG.KIWX.FZ.A.0003.261018T0700Z-261018T1300Z/
/O.NEW.KIWX.FZ.W.0003.261018T0700Z-261018T1300Z/
/O.CON.KIWX.FR.Y.0006.261017T0800Z-261017T1300Z/
Lagrange-Steuben-Noble-De Kalb-Whitley-Northern Kosciusko-
Southern Kosciusko-
134 AM EDT Sat Oct 17 2026
...FREEZE WARNING IN EFFECT FROM 3 AM TO 9 AM EDT SUNDAY...
...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM EDT THIS MORNING...
* WHAT...For the Frost Advisory, temperatures as low as 33 will
result in frost formation. For the Freeze Warning, sub-freezing
temperatures as low as 32 expected.
* WHERE...De Kalb, Lagrange, Noble, Northern Kosciusko, Southern
Kosciusko, Steuben, and Whitley Counties.
* WHEN...For the Frost Advisory, until 9 AM EDT this morning. For the
Freeze Warning, from 3 AM to 9 AM EDT Sunday.
* IMPACTS...Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing. Sensitive outdoor plants may be killed if left uncovered.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Take steps now to protect tender plants from the cold.
&&
$$
INZ018-023>027-032>034-OHZ001-002-004-005-015-016-024-025-172100-
/O.UPG.KIWX.FZ.A.0003.261018T0700Z-261018T1300Z/
/O.NEW.KIWX.FZ.W.0003.261018T0700Z-261018T1300Z/
Allen IN-Miami-Wabash-Huntington-Wells-Adams-Grant-Blackford-Jay-
Williams-Fulton OH-Defiance-Henry-Paulding-Putnam-Van Wert-Allen
OH-
134 AM EDT Sat Oct 17 2026
...FREEZE WARNING IN EFFECT FROM 3 AM TO 9 AM EDT SUNDAY...
* WHAT...Sub-freezing temperatures as low as 32 expected.
* WHERE...Portions of northern Indiana and northwest Ohio.
* WHEN...From 3 AM to 9 AM EDT Sunday.
* IMPACTS...Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Take steps now to protect tender plants from the cold.
&&
$$
INZ005-014-104-204-172100-
/O.NEW.KIWX.FR.Y.0007.261018T0700Z-261018T1300Z/
/O.CON.KIWX.FR.Y.0006.261017T0800Z-261017T1300Z/
Elkhart-Marshall-Eastern St. Joseph IN-Western St. Joseph IN-
134 AM EDT Sat Oct 17 2026
...FROST ADVISORY IN EFFECT FROM 3 AM TO 9 AM EDT SUNDAY...
...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM EDT THIS MORNING...
* WHAT...Temperatures falling into the middle to lower 30s for both
frost advisories will result in frost formation.
* WHERE...Eastern St. Joseph IN, Elkhart, Marshall, and Western St.
Joseph IN Counties.
* WHEN...For the first Frost Advisory, until 9 AM EDT this morning.
For the second Frost Advisory, from 3 AM to 9 AM EDT Sunday.
* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive
outdoor plants may be killed if left uncovered.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Take steps now to protect tender plants from the cold.
&&
$$
INZ012-013-015-020-022-103-203-172100-
/O.NEW.KIWX.FR.Y.0007.261018T0700Z-261018T1300Z/
Starke-Pulaski-Fulton IN-White-Cass IN-Northern La Porte-Southern
La Porte-
134 AM EDT Sat Oct 17 2026 /1234 AM CDT Sat Oct 17 2026/
...FROST ADVISORY IN EFFECT FROM 3 AM EDT /2 AM CDT/ TO 9 AM EDT /8
AM CDT/ SUNDAY...
* WHAT...Temperatures as low as 33 will result in frost formation.
* WHERE...Cass IN, Fulton IN, Northern La Porte, Pulaski, Southern La
Porte, Starke, and White Counties.
* WHEN...From 3 AM EDT /2 AM CDT/ to 9 AM EDT /8 AM CDT/ Sunday.
* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive
outdoor plants may be killed if left uncovered.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Take steps now to protect tender plants from the cold.
&&
$$
MIZ078>081-171300-
/O.CON.KIWX.FR.Y.0006.261017T0800Z-261017T1300Z/
Cass MI-St. Joseph MI-Branch-Hillsdale-
134 AM EDT Sat Oct 17 2026
...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM EDT THIS MORNING...
* WHAT...Temperatures as low as 32 will result in frost formation.
* WHERE...Branch, Cass MI, Hillsdale, and St. Joseph MI Counties.
* WHEN...Until 9 AM EDT this morning.
* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive
outdoor plants may be killed if left uncovered.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Take steps now to protect tender plants from the cold.
&&
$$
CR
Source: IWX issues Frost Advisory valid at Oct 18, 3:00 AM EDT for Eastern St. Joseph, Elkhart, Marshall, Western St. Joseph [IN] till Oct 18, 9:00 AM EDT (https://mesonet.agron.iastate.edu/vtec/f/2026-O-NEW-KIWX-FR-Y-0007_2026-10-18T07:00Z)
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