Severe Center
S. Nevada & SE California and NW Arizona Warnings, Watches, And Advisories Freeze Watch
Freeze Watch
In effect:
Tuesday, Apr 21 2026 12:00 AM EDT – Tuesday, Apr 21 2026 9:00 AM EDT
Issued by NWS Upton NY
FREEZE WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH TUESDAY MORNING
What:
Sub-freezing temperatures below 32 degrees possible.
Sub-freezing temperatures below 32 degrees possible.
Where:
Portions of southern Connecticut, northeast New Jersey,
and southeast New York.
Portions of southern Connecticut, northeast New Jersey,
and southeast New York.
When:
From late Monday night through Tuesday morning.
From late Monday night through Tuesday morning.
Impacts:
Frost and freeze conditions could kill crops and other
sensitive vegetation.
Frost and freeze conditions could kill crops and other
sensitive vegetation.
Instructions:
Take steps now to protect tender plants from the cold.
Take steps now to protect tender plants from the cold.
Areas Impacted:
Northern Fairfield
Northern New Haven
Northern Middlesex
Northern New London
Southern Fairfield
Southern New Haven
Southern Middlesex
Southern New London
Western Passaic
Eastern Passaic
Western Bergen
Eastern Bergen
Western Essex
Eastern Essex
Western Union
Eastern Union
Orange
Putnam
Rockland
Northern Westchester
Southern Westchester
Northwest Suffolk
Northeast Suffolk
Southwest Suffolk
Southeast Suffolk
Northern Nassau
Southern Nassau
Freeze Watch
In effect:
Sunday, Apr 19 2026 11:00 PM – Monday, Apr 20 2026 11:00 AM
Issued by NWS Grand Rapids MI
FROST ADVISORY REMAINS IN EFFECT UNTIL 10 AM EDT THIS MORNING... ...FREEZE WARNING IN EFFECT FROM 11 PM THIS EVENING TO 11 AM EDT MONDAY
The Freeze Watch has been replaced. Please see the latest information from NWS Grand Rapids MI on this developing situation.
Instructions:
Take steps now to protect tender plants from the cold.
Take steps now to protect tender plants from the cold.
Areas Impacted:
Muskegon
Montcalm
Gratiot
Ottawa
Kent
Ionia
Clinton
Allegan
Barry
Eaton
Ingham
Van Buren
Kalamazoo
Calhoun
Jackson
Freeze Watch
In effect:
Tuesday, Apr 21 2026 12:00 AM EDT – Tuesday, Apr 21 2026 9:00 AM EDT
Issued by NWS Mount Holly NJ
FREEZE WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH TUESDAY MORNING
What:
Sub-freezing temperatures as low as 30 possible, mainly
outside of the urban city centers.
Sub-freezing temperatures as low as 30 possible, mainly
outside of the urban city centers.
Where:
In Delaware, New Castle County. In Pennsylvania, Delaware
and Philadelphia Counties.
In Delaware, New Castle County. In Pennsylvania, Delaware
and Philadelphia Counties.
When:
From late Monday night through Tuesday morning.
From late Monday night through Tuesday morning.
Impacts:
Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
Instructions:
Take steps now to protect tender plants from the cold.
Take steps now to protect tender plants from the cold.
Areas Impacted:
New Castle
Delaware
Philadelphia
Freeze Watch
In effect:
Tuesday, Apr 21 2026 12:00 AM EDT – Tuesday, Apr 21 2026 9:00 AM EDT
Issued by NWS Mount Holly NJ
FREEZE WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH TUESDAY MORNING
What:
Sub-freezing temperatures as low as 30 possible.
Sub-freezing temperatures as low as 30 possible.
Where:
In Delaware, Kent and Inland Sussex Counties. In Maryland,
Caroline, Kent MD, Queen Annes, and Talbot Counties.
In Delaware, Kent and Inland Sussex Counties. In Maryland,
Caroline, Kent MD, Queen Annes, and Talbot Counties.
When:
From late Monday night through Tuesday morning.
From late Monday night through Tuesday morning.
Impacts:
Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
Instructions:
Take steps now to protect tender plants from the cold.
Take steps now to protect tender plants from the cold.
Areas Impacted:
Kent
Inland Sussex
Kent
Queen Anne's
Talbot
Caroline
Freeze Watch
In effect:
Tuesday, Apr 21 2026 12:00 AM EDT – Tuesday, Apr 21 2026 9:00 AM EDT
Issued by NWS Mount Holly NJ
FREEZE WARNING IN EFFECT FROM 11 PM THIS EVENING TO 10 AM EDT MONDAY... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE MONDAY NIGHT THROUGH TUESDAY MORNING
What:
For the Freeze Warning, sub-freezing temperatures as low as
25 expected. For the Freeze Watch, sub-freezing temperatures as
low as 19 possible.
For the Freeze Warning, sub-freezing temperatures as low as
25 expected. For the Freeze Watch, sub-freezing temperatures as
low as 19 possible.
Where:
Carbon and Monroe Counties.
Carbon and Monroe Counties.
When:
For the Freeze Warning, from 11 PM this evening to 10 AM
EDT Monday. For the Freeze Watch, from late Monday night through
Tuesday morning.
For the Freeze Warning, from 11 PM this evening to 10 AM
EDT Monday. For the Freeze Watch, from late Monday night through
Tuesday morning.
Impacts:
Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
Instructions:
Take steps now to protect tender plants from the cold.
Take steps now to protect tender plants from the cold.
Areas Impacted:
Carbon
Monroe
Freeze Watch
In effect:
Tuesday, Apr 21 2026 12:00 AM EDT – Tuesday, Apr 21 2026 9:00 AM EDT
Issued by NWS Mount Holly NJ
FREEZE WATCH REMAINS IN EFFECT FROM LATE MONDAY NIGHT THROUGH TUESDAY MORNING
What:
Sub-freezing temperatures as low as 26 possible.
Sub-freezing temperatures as low as 26 possible.
Where:
Portions of central, northern, northwest, and southern New
Jersey and east central and southeast Pennsylvania.
Portions of central, northern, northwest, and southern New
Jersey and east central and southeast Pennsylvania.
When:
From late Monday night through Tuesday morning.
From late Monday night through Tuesday morning.
Impacts:
Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
Instructions:
Take steps now to protect tender plants from the cold.
Take steps now to protect tender plants from the cold.
Areas Impacted:
Sussex
Warren
Morris
Hunterdon
Somerset
Middlesex
Western Monmouth
Mercer
Salem
Gloucester
Camden
Northwestern Burlington
Ocean
Cumberland
Atlantic
Cape May
Southeastern Burlington
Berks
Lehigh
Northampton
Western Chester
Eastern Chester
Western Montgomery
Eastern Montgomery
Upper Bucks
Lower Bucks
Freeze Watch
In effect:
Tuesday, Apr 21 2026 12:00 AM EDT – Tuesday, Apr 21 2026 11:00 AM EDT
Issued by NWS State College PA
FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT MONDAY... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE MONDAY NIGHT THROUGH TUESDAY MORNING
What:
For the Freeze Warning, sub-freezing temperatures as low as
25 expected. For the Freeze Watch, sub-freezing temperatures as
low as 21 possible.
For the Freeze Warning, sub-freezing temperatures as low as
25 expected. For the Freeze Watch, sub-freezing temperatures as
low as 21 possible.
Where:
Cameron, Clearfield, Elk, McKean, Northern Centre,
Northern Clinton, and Warren Counties.
Cameron, Clearfield, Elk, McKean, Northern Centre,
Northern Clinton, and Warren Counties.
When:
For the Freeze Warning, from midnight tonight to 9 AM EDT
Monday. For the Freeze Watch, from late Monday night through
Tuesday morning.
For the Freeze Warning, from midnight tonight to 9 AM EDT
Monday. For the Freeze Watch, from late Monday night through
Tuesday morning.
Impacts:
Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
Instructions:
Take steps now to protect tender plants and vegetation from the cold.
Freezing temperatures could kill crops and other sensitive
vegetation.
Take steps now to protect tender plants and vegetation from the cold.
Freezing temperatures could kill crops and other sensitive
vegetation.
Areas Impacted:
Warren
McKean
Elk
Cameron
Northern Clinton
Clearfield
Northern Centre
Freeze Watch
In effect:
Tuesday, Apr 21 2026 12:00 AM EDT – Tuesday, Apr 21 2026 9:00 AM EDT
Issued by NWS State College PA
FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT MONDAY... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE MONDAY NIGHT THROUGH TUESDAY MORNING
What:
For the Freeze Warning, sub-freezing temperatures as low as
30 expected. For the Freeze Watch, sub-freezing temperatures as
low as 23 possible.
For the Freeze Warning, sub-freezing temperatures as low as
30 expected. For the Freeze Watch, sub-freezing temperatures as
low as 23 possible.
Where:
Blair, Cambria, Somerset, Southern Centre, Southern
Clinton, and Southern Lycoming Counties.
Blair, Cambria, Somerset, Southern Centre, Southern
Clinton, and Southern Lycoming Counties.
When:
For the Freeze Warning, from midnight tonight to 9 AM EDT
Monday. For the Freeze Watch, from late Monday night through
Tuesday morning.
For the Freeze Warning, from midnight tonight to 9 AM EDT
Monday. For the Freeze Watch, from late Monday night through
Tuesday morning.
Impacts:
Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
Instructions:
Take steps now to protect tender plants and vegetation from the cold.
Freezing temperatures could kill crops and other sensitive
vegetation.
Take steps now to protect tender plants and vegetation from the cold.
Freezing temperatures could kill crops and other sensitive
vegetation.
Areas Impacted:
Southern Centre
Cambria
Blair
Somerset
Southern Clinton
Southern Lycoming
Freeze Watch
In effect:
Tuesday, Apr 21 2026 12:00 AM EDT – Tuesday, Apr 21 2026 9:00 AM EDT
Issued by NWS State College PA
FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT MONDAY... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE MONDAY NIGHT THROUGH TUESDAY MORNING
What:
For the Freeze Warning, sub-freezing temperatures as low as
31 expected. For the Freeze Watch, sub-freezing temperatures as
low as 24 possible.
For the Freeze Warning, sub-freezing temperatures as low as
31 expected. For the Freeze Watch, sub-freezing temperatures as
low as 24 possible.
Where:
Bedford County.
Bedford County.
When:
For the Freeze Warning, from midnight tonight to 9 AM EDT
Monday. For the Freeze Watch, from late Monday night through
Tuesday morning.
For the Freeze Warning, from midnight tonight to 9 AM EDT
Monday. For the Freeze Watch, from late Monday night through
Tuesday morning.
Impacts:
Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
Instructions:
Take steps now to protect tender plants and vegetation from the cold.
Freezing temperatures could kill crops and other sensitive
vegetation.
Take steps now to protect tender plants and vegetation from the cold.
Freezing temperatures could kill crops and other sensitive
vegetation.
Areas Impacted:
Bedford
Freeze Watch
In effect:
Tuesday, Apr 21 2026 12:00 AM EDT – Tuesday, Apr 21 2026 9:00 AM EDT
Issued by NWS State College PA
FREEZE WATCH REMAINS IN EFFECT FROM LATE MONDAY NIGHT THROUGH TUESDAY MORNING
What:
Sub-freezing temperatures as low as 26 possible.
Sub-freezing temperatures as low as 26 possible.
Where:
A portion of central Pennsylvania.
A portion of central Pennsylvania.
When:
From late Monday night through Tuesday morning.
From late Monday night through Tuesday morning.
Impacts:
Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
Instructions:
Those with agricultural interests should protect sensitive
vegetation.
Freezing temperatures could kill crops and other sensitive
vegetation.
Those with agricultural interests should protect sensitive
vegetation.
Freezing temperatures could kill crops and other sensitive
vegetation.
Areas Impacted:
Huntingdon
Mifflin
Juniata
Fulton
Franklin
Union
Snyder
Montour
Northumberland
Columbia
Perry
Dauphin
Schuylkill
Lebanon
Cumberland
Adams
York
Lancaster
Freeze Watch
In effect:
Sunday, Apr 19 2026 10:00 PM MDT – Monday, Apr 20 2026 9:00 AM MDT
Issued by NWS Grand Junction CO
FREEZE WARNING REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 9 AM MDT SUNDAY... ...FREEZE WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY MORNING
What:
For the Freeze Warning, sub-freezing temperatures as
low as 23. For the Freeze Watch, sub-freezing temperatures as
low as 30 possible.
For the Freeze Warning, sub-freezing temperatures as
low as 23. For the Freeze Watch, sub-freezing temperatures as
low as 30 possible.
Where:
Central Yampa River Basin and Central Colorado River
Basin Counties.
Central Yampa River Basin and Central Colorado River
Basin Counties.
When:
For the Freeze Warning, until 9 AM MDT Sunday. For the
Freeze Watch, from Sunday evening through Monday morning.
For the Freeze Warning, until 9 AM MDT Sunday. For the
Freeze Watch, from Sunday evening through Monday morning.
Impacts:
Frost and freeze conditions will kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
Frost and freeze conditions will kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
Instructions:
A Freeze Warning means sub-freezing temperatures are imminent or
highly likely. These conditions will kill crops and other
sensitive vegetation.
A Freeze Watch means sub-freezing temperatures are possible.
These conditions could kill crops and other sensitive vegetation.
A Freeze Warning means sub-freezing temperatures are imminent or
highly likely. These conditions will kill crops and other
sensitive vegetation.
A Freeze Watch means sub-freezing temperatures are possible.
These conditions could kill crops and other sensitive vegetation.
Areas Impacted:
Central Yampa River Basin
Central Colorado River Basin
Freeze Watch
In effect:
Tuesday, Apr 21 2026 2:00 AM EDT – Tuesday, Apr 21 2026 10:00 AM EDT
Issued by NWS Baltimore MD/Washington DC
FREEZE WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH TUESDAY MORNING
What:
Sub-freezing temperatures as low as 29 to 32 degrees
possible, especially northwest of I-95.
Sub-freezing temperatures as low as 29 to 32 degrees
possible, especially northwest of I-95.
Where:
In Maryland, Central and Southeast Howard, Central and
Southeast Montgomery, Southeast Harford, and Southern Baltimore
Counties. In Virginia, Albemarle, Nelson, Spotsylvania, Central
and Southeast Prince William/Manassas/Manassas Park, Fairfax, and
Stafford Counties.
In Maryland, Central and Southeast Howard, Central and
Southeast Montgomery, Southeast Harford, and Southern Baltimore
Counties. In Virginia, Albemarle, Nelson, Spotsylvania, Central
and Southeast Prince William/Manassas/Manassas Park, Fairfax, and
Stafford Counties.
When:
From late Monday night through Tuesday morning.
From late Monday night through Tuesday morning.
Impacts:
Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
Instructions:
Take steps now to protect tender plants from the cold.
Take steps now to protect tender plants from the cold.
Areas Impacted:
Southern Baltimore
Central and Southeast Montgomery
Central and Southeast Howard
Southeast Harford
Nelson
Albemarle
Fairfax
Stafford
Spotsylvania
Central and Southeast Prince William/Manassas/Manassas Park
Freeze Watch
In effect:
Tuesday, Apr 21 2026 2:00 AM EDT – Tuesday, Apr 21 2026 10:00 AM EDT
Issued by NWS Baltimore MD/Washington DC
FREEZE WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH TUESDAY MORNING
What:
Sub-freezing temperatures as low as 26 to 30 degrees
possible.
Sub-freezing temperatures as low as 26 to 30 degrees
possible.
Where:
Portions of central, north central, northeast, and
northern Maryland, central, northern, northwest, and western
Virginia, and panhandle West Virginia.
Portions of central, north central, northeast, and
northern Maryland, central, northern, northwest, and western
Virginia, and panhandle West Virginia.
When:
From late Monday night through Tuesday morning.
From late Monday night through Tuesday morning.
Impacts:
Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
Instructions:
Take steps now to protect tender plants from the cold.
Take steps now to protect tender plants from the cold.
Areas Impacted:
Washington
Frederick
Carroll
Northern Baltimore
Cecil
Northwest Montgomery
Northwest Howard
Northwest Harford
Augusta
Rockingham
Shenandoah
Frederick
Page
Warren
Clarke
Greene
Madison
Rappahannock
Orange
Culpeper
Northern Fauquier
Southern Fauquier
Western Loudoun
Eastern Loudoun
Northern Virginia Blue Ridge
Central Virginia Blue Ridge
Northwest Prince William
Morgan
Berkeley
Jefferson