Alert archive / Florida / Frost Advisories in 2022

Frost Advisory 2, NWS Miami, FL

January 30, 2022Broward County, Collier County, Palm Beach County, Florida

NWS Miami, FL issued this frost advisory at Jan 30, 2022, 2:18 AM EST for Broward County, Collier County, Palm Beach County, Florida. It took effect at Jan 31, 2022, 1:00 AM EST. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued
Jan 30, 2022, 2:18 AM EST (07:18 UTC)
In effect from
Jan 31, 2022, 1:00 AM EST
Expired
Jan 31, 2022, 8:00 AM EST
In force
7 hr
Issued by
NWS Miami, FL

Counties Broward County, FL, Collier County, FL, Palm Beach County, FL

The radar

The Miami radar (KAMX), 84 km from the middle of the area, began a volume at 07:17 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

Miami, FL (KMFL), launched 00:00Z, 7.3 hours before the alert went out and 71 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, Miami, FL at 00:00Z on 2022-01-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Miami, FL at 00:00Z on 2022-01-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -6 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2120 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
-6 m²/s²
0-3 km storm-relative helicity
-8 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

733 
WWUS72 KMFL 300718
NPWMFL

URGENT - WEATHER MESSAGE
National Weather Service Miami FL
218 AM EST Sun Jan 30 2022

FLZ063-301530-
/O.UPG.KMFL.FZ.A.0003.220131T0800Z-220131T1400Z/
/O.NEW.KMFL.FZ.W.0002.220131T0800Z-220131T1300Z/
/O.CON.KMFL.HZ.W.0001.000000T0000Z-220130T1400Z/
Glades-
Including the cities of Palmdale and Moore Haven
218 AM EST Sun Jan 30 2022

...HARD FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM EST THIS
MORNING...
...FREEZE WARNING IN EFFECT FROM 3 AM TO 8 AM EST MONDAY...

* WHAT...For the Hard Freeze Warning, sub-freezing temperatures 
  as low as 27. For the Freeze Warning, sub-freezing 
  temperatures as low as 32 expected.

* WHERE...Glades County.

* WHEN...For the Hard Freeze Warning, until 9 AM EST this 
  morning. For the Freeze Warning, from 3 AM to 8 AM EST Monday.

* IMPACTS...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

FLZ066-301530-
/O.UPG.KMFL.FZ.A.0003.220131T0800Z-220131T1400Z/
/O.NEW.KMFL.FZ.W.0002.220131T0800Z-220131T1300Z/
/O.CON.KMFL.FZ.W.0001.000000T0000Z-220130T1400Z/
Hendry-
Including the cities of Clewiston, LaBelle, 
and Big Cypress Seminole Reservation
218 AM EST Sun Jan 30 2022

...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM EST THIS MORNING...
...FREEZE WARNING IN EFFECT FROM 3 AM TO 8 AM EST MONDAY...

* WHAT...For the first Freeze Warning, sub-freezing temperatures 
  as low as 28. For the second Freeze Warning, sub-freezing 
  temperatures as low as 34 expected.

* WHERE...Hendry County.

* WHEN...For the first Freeze Warning, until 9 AM EST this 
  morning. For the second Freeze Warning, from 3 AM to 8 AM EST 
  Monday.

* IMPACTS...Frost and freeze conditions will kill crops, other
  sensitive vegetation and possibly damage unprotected outdoor
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

FLZ067-070-071-301530-
/O.NEW.KMFL.FR.Y.0002.220131T0800Z-220131T1300Z/
/O.CON.KMFL.FZ.W.0001.000000T0000Z-220130T1400Z/
Inland Palm Beach-Inland Collier-Inland Broward-
Including the cities of Pahokee, South Bay, Belle Glade, 
Wellington, Lion Country Safari, South County Regional Park, 
Immokalee, Miccosukee Indian Reservation, and Markham Park
218 AM EST Sun Jan 30 2022

...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM EST THIS MORNING...
...FROST ADVISORY IN EFFECT FROM 3 AM TO 8 AM EST MONDAY...

* WHAT...For the Freeze Warning, sub-freezing temperatures as 
  low as 30. For the Frost Advisory, temperatures as low as 36 
  will result in frost formation.

* WHERE...Inland Palm Beach, Inland Collier and Inland Broward 
  Counties.

* WHEN...For the Freeze Warning, until 9 AM EST this morning. 
  For the Frost Advisory, from 3 AM to 8 AM EST Monday.

* IMPACTS...Frost and freeze conditions will kill crops, other
  sensitive vegetation and possibly damage unprotected outdoor
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

FLZ068-069-301400-
/O.CON.KMFL.FZ.A.0002.000000T0000Z-220130T1400Z/
Metro Palm Beach-Coastal Collier-
Including the cities of Palm Springs, Florida Gardens, Aberdeen, 
Boca West, Naples, Marco Island, and Everglades City
218 AM EST Sun Jan 30 2022

...FREEZE WATCH REMAINS IN EFFECT UNTIL 9 AM EST THIS MORNING...

* WHAT...Sub-freezing temperatures as low as 32 possible.

* WHERE...Metro Palm Beach and Coastal Collier Counties.

* WHEN...From 1 AM EST Sunday through Sunday morning.

* 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. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$
5 follow-up statements
164 
WWUS72 KMFL 300728
NPWMFL

URGENT - WEATHER MESSAGE
National Weather Service Miami FL
228 AM EST Sun Jan 30 2022

FLZ068-069-300830-
/O.CAN.KMFL.FZ.A.0002.000000T0000Z-220130T1400Z/
Metro Palm Beach-Coastal Collier-
Including the cities of Palm Springs, Florida Gardens, Aberdeen, 
Boca West, Naples, Marco Island, and Everglades City
228 AM EST Sun Jan 30 2022

...FREEZE WATCH IS CANCELLED...

Current guidance and observational data suggests that temperatures
across metropolitan portions of Collier and Palm Beach Counties 
are not expected to reach freezing thresholds, and thus the 
freeze watch for these zones has been cancelled.

$$

FLZ063-301530-
/O.CON.KMFL.HZ.W.0001.000000T0000Z-220130T1400Z/
/O.CON.KMFL.FZ.W.0002.220131T0800Z-220131T1300Z/
Glades-
Including the cities of Palmdale and Moore Haven
228 AM EST Sun Jan 30 2022

...HARD FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM EST THIS
MORNING...
...FREEZE WARNING REMAINS IN EFFECT FROM 3 AM TO 8 AM EST
MONDAY...

* WHAT...For the Hard Freeze Warning, sub-freezing temperatures 
  as low as 27. For the Freeze Warning, sub-freezing 
  temperatures as low as 32 expected.

* WHERE...Glades County.

* WHEN...For the Hard Freeze Warning, until 9 AM EST this 
  morning. For the Freeze Warning, from 3 AM to 8 AM EST Monday.

* IMPACTS...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

FLZ066-301530-
/O.CON.KMFL.FZ.W.0001.000000T0000Z-220130T1400Z/
/O.CON.KMFL.FZ.W.0002.220131T0800Z-220131T1300Z/
Hendry-
Including the cities of Clewiston, LaBelle, 
and Big Cypress Seminole Reservation
228 AM EST Sun Jan 30 2022

...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM EST THIS MORNING...
...FREEZE WARNING REMAINS IN EFFECT FROM 3 AM TO 8 AM EST
MONDAY...

* WHAT...For the first Freeze Warning, sub-freezing temperatures 
  as low as 28. For the second Freeze Warning, sub-freezing 
  temperatures as low as 34 expected.

* WHERE...Hendry County.

* WHEN...For the first Freeze Warning, until 9 AM EST this 
  morning. For the second Freeze Warning, from 3 AM to 8 AM EST 
  Monday.

* IMPACTS...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

FLZ067-070-071-301530-
/O.CON.KMFL.FZ.W.0001.000000T0000Z-220130T1400Z/
/O.CON.KMFL.FR.Y.0002.220131T0800Z-220131T1300Z/
Inland Palm Beach-Inland Collier-Inland Broward-
Including the cities of Pahokee, South Bay, Belle Glade, 
Wellington, Lion Country Safari, South County Regional Park, 
Immokalee, Miccosukee Indian Reservation, and Markham Park
228 AM EST Sun Jan 30 2022

...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM EST THIS MORNING...
...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 8 AM EST
MONDAY...

* WHAT...For the Freeze Warning, sub-freezing temperatures as 
  low as 30. For the Frost Advisory, temperatures as low as 36 
  will result in frost formation.

* WHERE...Inland Palm Beach, Inland Collier and Inland Broward 
  Counties.

* WHEN...For the Freeze Warning, until 9 AM EST this morning. 
  For the Frost Advisory, from 3 AM to 8 AM EST Monday.

* IMPACTS...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$
707 
WWUS72 KMFL 301358
NPWMFL

URGENT - WEATHER MESSAGE
National Weather Service Miami FL
858 AM EST Sun Jan 30 2022

FLZ063-302200-
/O.EXP.KMFL.HZ.W.0001.000000T0000Z-220130T1400Z/
/O.CON.KMFL.FZ.W.0002.220131T0800Z-220131T1300Z/
Glades-
Including the cities of Palmdale and Moore Haven
858 AM EST Sun Jan 30 2022

...FREEZE WARNING REMAINS IN EFFECT FROM 3 AM TO 8 AM EST
MONDAY...
...HARD FREEZE WARNING WILL EXPIRE AT 9 AM EST THIS MORNING...

* WHAT...Sub-freezing temperatures as low as 32 expected.

* WHERE...Glades County.

* WHEN...From 3 AM to 8 AM EST Monday.

* IMPACTS...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

FLZ066-302200-
/O.EXP.KMFL.FZ.W.0001.000000T0000Z-220130T1400Z/
/O.CON.KMFL.FZ.W.0002.220131T0800Z-220131T1300Z/
Hendry-
Including the cities of Clewiston, LaBelle, 
and Big Cypress Seminole Reservation
858 AM EST Sun Jan 30 2022

...FREEZE WARNING REMAINS IN EFFECT FROM 3 AM TO 8 AM EST
MONDAY...
...FREEZE WARNING WILL EXPIRE AT 9 AM EST THIS MORNING...

* WHAT...Sub-freezing temperatures as low as 32 expected.

* WHERE...Hendry County.

* WHEN...From 3 AM to 8 AM EST Monday.

* IMPACTS...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

FLZ067-070-071-302200-
/O.EXP.KMFL.FZ.W.0001.000000T0000Z-220130T1400Z/
/O.CON.KMFL.FR.Y.0002.220131T0800Z-220131T1300Z/
Inland Palm Beach-Inland Collier-Inland Broward-
Including the cities of Pahokee, South Bay, Belle Glade, 
Wellington, Lion Country Safari, South County Regional Park, 
Immokalee, Miccosukee Indian Reservation, and Markham Park
858 AM EST Sun Jan 30 2022

...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 8 AM EST
MONDAY...
...FREEZE WARNING WILL EXPIRE AT 9 AM EST THIS MORNING...

* WHAT...Temperatures as low as 34 will result in frost 
  formation.

* WHERE...Inland Collier, Inland Broward and Inland Palm Beach 
  Counties.

* WHEN...From 3 AM to 8 AM EST Monday.

* IMPACTS...Frost could kill sensitive outdoor vegetation if 
  left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$
227 
WWUS72 KMFL 302048
NPWMFL

URGENT - WEATHER MESSAGE
National Weather Service Miami FL
348 PM EST Sun Jan 30 2022

FLZ063-066-310500-
/O.CON.KMFL.FZ.W.0002.220131T0800Z-220131T1300Z/
Glades-Hendry-
Including the cities of Palmdale, Moore Haven, Clewiston, 
LaBelle, and Big Cypress Seminole Reservation
348 PM EST Sun Jan 30 2022

...FREEZE WARNING REMAINS IN EFFECT FROM 3 AM TO 8 AM EST
MONDAY...

* WHAT...Sub-freezing temperatures as low as 32 expected.

* WHERE...Hendry and Glades Counties.

* WHEN...From 3 AM to 8 AM EST Monday.

* IMPACTS...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

FLZ067-070-071-310500-
/O.CON.KMFL.FR.Y.0002.220131T0800Z-220131T1300Z/
Inland Palm Beach-Inland Collier-Inland Broward-
Including the cities of Pahokee, South Bay, Belle Glade, 
Wellington, Lion Country Safari, South County Regional Park, 
Immokalee, Miccosukee Indian Reservation, and Markham Park
348 PM EST Sun Jan 30 2022

...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 8 AM EST
MONDAY...

* WHAT...Temperatures as low as 34 will result in frost 
  formation.

* WHERE...Inland Collier, Inland Broward and Inland Palm Beach 
  Counties.

* WHEN...From 3 AM to 8 AM EST Monday.

* IMPACTS...Frost could kill sensitive outdoor vegetation if 
  left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$
971 
WWUS72 KMFL 310408
NPWMFL

URGENT - WEATHER MESSAGE
National Weather Service Miami FL
1108 PM EST Sun Jan 30 2022

FLZ070-311215-
/O.UPG.KMFL.FR.Y.0002.220131T0800Z-220131T1300Z/
/O.EXB.KMFL.FZ.W.0002.220131T0408Z-220131T1300Z/
Inland Collier-
Including the city of Immokalee
1108 PM EST Sun Jan 30 2022

...FREEZE WARNING IN EFFECT UNTIL 8 AM EST MONDAY...

* WHAT...Temperatures as low as 34 will result in frost 
  formation.

* WHERE...Inland Collier County.

* WHEN...Until 8 AM EST Monday.

* IMPACTS...Frost could kill sensitive outdoor vegetation if left
  uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

FLZ063-066-311215-
/O.EXT.KMFL.FZ.W.0002.220131T0408Z-220131T1300Z/
Glades-Hendry-
Including the cities of Palmdale, Moore Haven, Clewiston, 
LaBelle, and Big Cypress Seminole Reservation
1108 PM EST Sun Jan 30 2022

...FREEZE WARNING NOW IN EFFECT UNTIL 8 AM EST MONDAY...

* WHAT...Sub-freezing temperatures as low as 32 expected.

* WHERE...Hendry and Glades Counties.

* WHEN...Until 8 AM EST Monday.

* IMPACTS...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

FLZ067-071-311215-
/O.EXT.KMFL.FR.Y.0002.220131T0600Z-220131T1300Z/
Inland Palm Beach-Inland Broward-
Including the cities of Pahokee, South Bay, Belle Glade, 
Wellington, Lion Country Safari, South County Regional Park, 
Miccosukee Indian Reservation, and Markham Park
1108 PM EST Sun Jan 30 2022

...FROST ADVISORY NOW IN EFFECT UNTIL 8 AM EST MONDAY...

* WHAT...Temperatures as low as 34 will result in frost 
  formation.

* WHERE...Inland Collier, Inland Broward and Inland Palm Beach 
  Counties.

* WHEN...Until 8 AM EST Monday.

* IMPACTS...Frost could kill sensitive outdoor vegetation if 
  left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$
969 
WWUS72 KMFL 310852
NPWMFL

URGENT - WEATHER MESSAGE
National Weather Service Miami FL
352 AM EST Mon Jan 31 2022

FLZ063-066-070-311300-
/O.CON.KMFL.FZ.W.0002.000000T0000Z-220131T1300Z/
Glades-Hendry-Inland Collier-
Including the cities of Palmdale, Moore Haven, Clewiston, 
LaBelle, Big Cypress Seminole Reservation, and Immokalee
352 AM EST Mon Jan 31 2022

...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM EST THIS MORNING...

* WHAT...Sub-freezing temperatures as low as 32 expected.

* WHERE...Hendry and Glades Counties.

* WHEN...Until 8 AM EST Monday.

* IMPACTS...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

FLZ067-071-311300-
/O.CON.KMFL.FR.Y.0002.000000T0000Z-220131T1300Z/
Inland Palm Beach-Inland Broward-
Including the cities of Pahokee, South Bay, Belle Glade, 
Wellington, Lion Country Safari, South County Regional Park, 
Miccosukee Indian Reservation, and Markham Park
352 AM EST Mon Jan 31 2022

...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EST THIS MORNING...

* WHAT...Temperatures as low as 34 will result in frost 
  formation.

* WHERE...Inland Collier, Inland Broward and Inland Palm Beach 
  Counties.

* WHEN...Until 8 AM EST Monday.

* IMPACTS...Frost could kill sensitive outdoor vegetation if 
  left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

What forecasters said that day

The local office's own words before this frost advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Miami, FL wrote its last area forecast discussion before this frost advisory went out at Jan 30, 12:30 AM EST, 1 hour 48 minutes earlier.

Area forecast discussion, Jan 30, 12:30 AM EST, 1 hour 48 minutes before
Area Forecast Discussion
National Weather Service Miami FL
1230 AM EST Sun Jan 30 2022

.AVIATION(06Z TAFS)...
VFR conditions will prevail through the forecast period in the
wake of a passing cold front. Mostly clear skies are expected,
with winds generally out of the NW/NNW around 5 kt overnight
tonight, and 08 to 10 kt tomorrow.

&&

.PREV DISCUSSION... (Issued 632 PM EST Sat Jan 29 2022)

UPDATE...
High pressure will continue to bring dry conditions to the region
tonight. Winds will slowly diminish as the evening progresses. The
main story for tonight will be the very cold temperatures as
strong cold air advection continues. Low temperatures will drop
into the mid to upper 20s over Glades County and into the mid to
upper 30s over the east coast metro areas. Even through the winds
will be gradually diminishing, they will remain high enough to
produce lower wind chills over the area. With the wind, the wind
chill values will drop down into the lower to mid 20s over Glades
and Hendry counties and into the upper 20s to near 30 across the
rest of South Florida. With the northwesterly flow remaining in
place on Sunday, cold air advection will continue and high
temperatures will generally range from the upper 50s over the Lake
Okeechobee region to the lower 60s over the east coast metro
areas.

PREV DISCUSSION... (Issued 321 PM EST Sat Jan 29 2022)

.Hard Freeze Warning Glades County Tonight...
.Freeze Warning Hendry, Inland Collier, Inland Palm Beach, and
Inland Broward Counties Tonight...
.Freeze Watch In Effect Metro Collier And Metro Palm Beach
Counties Tonight...
.Wind Chill Warning For Northern Inland Areas With A Wind Chill
Advisory For Rest Of South Florida Tonight...
.Freeze Watch In Effect Sunday Night Glades And Hendry Counties...
.Rough Marine Conditions Continue For All South Florida Waters...

DISCUSSION...

Short Term (Tonight and Sunday):

The strong low pressure over the Northern Atlantic waters will
continue to move northeast tonight allowing for the strong high
pressure over the Gulf of Mexico to move eastward and into the
Florida Peninsula on Sunday. This will keep an northwest wind flow
over South Florida through Sunday bringing in the very dry and cold
weather to the region.

The latest short range models have trended downward for tonight over
South Florida with lows around 30 around Lake Okeechobee to the
lower to mid 30s over rest of the Interior areas and mid to upper
30s over the east coast metro areas. The only exceptions to this is
over metro areas of Collier and Palm Beach Counties where the lows
are now forecast to get close to freezing, and into the mid 20s over
Glades County. Therefore, a freeze watch has issued for metro areas
of Palm Beach and Collier Counties for tonight with rest of the
northern interior areas remaining in a freeze warning. Glades County
will also remain in a Hard Freeze Warning for tonight.

The Redlands could get close to freezing right around sunrise on
Sunday if the winds are a little less than forecasted at this time.
So will continue to monitor the latest short ranges models to see if
a short fuse freeze warning may be needed for this area.

The Northwest winds should slowly decreasing tonight into Sunday as
the pressure gradient relaxes. However, the winds tonight will still
be around 5 mph over the interior areas to 5 to 10 mph over the
metro areas. This will allow for the wind chill readings to get down
to lower to mid 20s over the northern interior areas with even
Inland Collier County getting down into the mid 20s. Rest of South
Florida will see wind chill readings in the upper 20s to near 30.
Therefore, the Wind Chill Warning has been extended into Inland
Collier County for tonight while remaining up over rest of the
northern interior areas. The Wind Chill Advisory will also remain up
for the east and west coast metro areas of South Florida including
Inland Miami-Dade, Mainland Monroe, and Southern Miami-Dade Counties.

The Wind Advisory will also remain up through rest of this afternoon
for the metro areas due to the wind gusts getting up to around 35
mph.

The very dry air and colder air will remain over South Florida on
Sunday. Highs on Sunday will only get up into the lower to mid 60s,
except mid to upper 50s around Lake Okeechobee.

Long term (Sunday Night through Friday):

Models remain locked on keeping the area under the dominance of
massive cold air advection from the north to start the work week as
broad high pressure remains in place across the SE CONUS.

After coordination with surrounding WFOs and based on the suggested
min temps from latest guidance, a Freeze watch has been issued for
Glades and hendry counties Sunday night into Monday morning. For
how long could the freezing temps last is still uncertain, but
attm seems close enough to go ahead and put those counties in a
watch. Winds should relax significantly across the region on
Sunday night into Monday, with speeds down to less than 5 mph at
times, so radiational cooling will be basically as effective as
the previous night.

A warming trend starts on Monday afternoon as temperatures start
coming back to more seasonal values.  Winds will start veering to
the NE, but conditions should remain dry enough to limit chances of
rain through Tuesday.  High temperatures on Monday and Tuesday
should range from high 60s to mid 70s for the whole region. Low
temperatures Monday night could still be below normal, ranging from
mid 40s in the interior to low 60s in coastal areas. Lows on Tuesday
night will return near normal, reaching mid 50s in the interior and
high 60s in the metro areas.

Another upper level trough could start making its way south across
CONUS Wednesday through Friday, spawning a low pressure area over SE
CONUS on Thursday, but confidence of this solution or any impacts
remains low at this time.

MARINE...

The northerly winds over the Gulf and Atlantic waters will remain at
25 t0 30 knots with gusts up to 40 knots this afternoon before
decreasing to 20 to 25 knots with gusts getting up to 30 knots
tonight. The Lake Okeechobee and Biscayne Bay waters will slowly
decrease to 15 to 20 knots by this evening and continue to decrease
through the night.

The northern winds will slowly decrease on Sunday and by early next
week be from the northeast direction at 10 to 15 knots. The only
exception is over Lake Okeechobee and Biscayne Bay waters where
they will be 5 to 10 knots by early next week.

Atlantic seas of 9 to 11 feet this afternoon will slowly subside to
7 to 9 feet by Sunday. The Atlantic seas will continue to slowly
subside Sunday night and by early next week be at 5 feet or less.
The Gulf seas will also subside from 5 to 7 feet near-shore up to 10
feet offshore this afternoon to 4 feet or less by Sunday afternoon.

Therefore, an Gale Warning will remain in effect until this evening
for the Atlantic and Gulf waters with an SCA conditions for Lake
Okeechobee and Biscayne Bay. The Gale Warning will be replace by and
SCA conditons for tonight. The SCA will be replace with an SCEC for
Lake Okeechobee and Biscayne Bay waters for tonight.

BEACHES...

A High Risk of Rip Currents will continue for the beaches of Collier
County beaches through this afternoon due to the windy to very wind
northwest winds and a northwest swell of 2 to 3 feet. There will
also be a northeast swell 2 to 4 affecting the east coast beaches of
South Florida rest of this weekend into early next week from the low
pressure over the northern Atlantic waters. Therefore, a High Risk
of Rip Currents will remain in effect for the beaches of Palm Beach
County through rest of this weekend.

There will also be breakers of 3 to 6 feet this afternoon for the
beaches of Collier County. These breakers should decrease tonight,
as the winds slowly decrease. Therefore, a High Surf Advisory
remains in effect through early this evening for beaches of Collier
County.

FIRE WEATHER...

The very dry air will has allowed for the relative humidity to fall
into the upper 20s over the northern areas to lower 30s over the
southern areas this afternoon. The 20 foot winds are still in the 15
to 20 mph over the eastern areas of South Florida and around 15 mph
over the western areas of South Florida. The ERC's are also in the
27 to 29 range over the eastern areas and in the lower to mid 20s
over the western areas this afternoon. Therefore, the Red Flag
Warning is still in effect for the eastern areas of South Florida
through early this evening.

On sunday, the relative humidity will crash into the upper teens to
mid 20s over the over most areas except the east coast metro areas
where they will in the lower to mid 30s. However, the 20 foot winds
will remain below 15 mph over South Florida on Sunday. Therefore, NO
fire weather headlines will be needed for Sunday over South Florida.

&&

.PRELIMINARY POINT TEMPS/POPS...
Miami            48  70  59  74 /   0   0   0  10
West Kendall     44  72  56  75 /   0   0   0  10
Opa-Locka        46  71  57  74 /   0   0   0   0
Homestead        45  70  57  74 /   0   0   0  10
Fort Lauderdale  47  70  60  74 /   0   0   0   0
N Ft Lauderdale  46  70  59  74 /   0   0   0   0
Pembroke Pines   45  70  56  74 /   0   0   0   0
West Palm Beach  43  69  56  73 /   0   0   0   0
Boca Raton       45  70  59  74 /   0   0   0   0
Naples           38  71  52  76 /   0   0   0   0

&&

.MFL WATCHES/WARNINGS/ADVISORIES...
FL...Wind Chill Advisory until 9 AM EST this morning for FLZ068-069-
     071>075-168-172>174.

     Freeze Warning until 9 AM EST this morning for FLZ066-067-070-
     071.

     Wind Chill Warning until 9 AM EST this morning for FLZ063-066-
     067-070.

     Freeze Watch from late tonight through Monday morning for FLZ063-
     066.

     Hard Freeze Warning until 9 AM EST this morning for FLZ063.

     Freeze Watch until 9 AM EST this morning for FLZ068-069.

     High Rip Current Risk until 1 AM EST early this morning for
     FLZ069.

     High Rip Current Risk through this evening for FLZ168.

AM...Small Craft Advisory until 7 PM EST this evening for AMZ650-651-
     670-671.

GM...Small Craft Advisory until 4 AM EST early this morning for
     GMZ656-657-676.

&&

Update/Aviation...Bhatti

Visit us at weather.gov/miami

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Hazardous weather outlook, Jan 29, 7:12 PM EST, 7 hours 6 minutes before
Hazardous Weather Outlook for South Florida
National Weather Service Miami FL
712 PM EST Sat Jan 29 2022

AMZ610-630-650-651-670-671-FLZ063-066>075-168-172>174-GMZ656-657-676-
301815-
Lake Okeechobee-Biscayne Bay-
Coastal waters from Jupiter Inlet to Deerfield Beach FL out 20 NM-
Coastal waters from Deerfield Beach to Ocean Reef FL out 20 NM-
Waters from Jupiter Inlet to Deerfield Beach FL from 20 to 60 NM-
Waters from Deerfield Beach to Ocean Reef FL from 20 to 60 NM
excluding the territorial waters of Bahamas-Glades-Hendry-
Inland Palm Beach-Metro Palm Beach-Coastal Collier-Inland Collier-
Inland Broward-Metro Broward-Inland Miami-Dade-Metro Miami-Dade-
Mainland Monroe-Coastal Palm Beach-Coastal Broward-Coastal Miami-
Dade-Far South Miami-Dade-
Coastal waters from Chokoloskee to Bonita Beach FL out 20 NM-
Coastal waters from East Cape Sable to Chokoloskee FL out 20 NM-
Waters from Chokoloskee to Bonita Beach FL from 20 to 60 NM-
712 PM EST Sat Jan 29 2022

...Freezing Temperatures and Dangerous Wind Chills Tonight...
...Hazardous Marine and Beach Conditions Continue...

This hazardous weather outlook is for South Florida.

.DAY ONE...TONIGHT

Rip Currents: There is a high risk of rip currents along the Palm
Beaches as well as the Collier County Beaches.

Marine: Hazardous marine conditions will continue, with northwesterly
winds around 20 knots and wave heights between 9 and 11 feet over the
Atlantic waters. Wave heights will range from 7 to 9 feet over the
Gulf waters as they slowly continue to diminish as the night
progresses.

Temperatures: Very cold temperatures will occur tonight with low
temperatures dropping below freezing across the interior where
Freeze and Hard Freeze warnings are in effect. Wind chill values will
drop into the 20s and low 30s across South Florida.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

Cold temperatures again Sunday night with frost development possible.

Hazardous marine conditions will continue through the weekend.
Enhanced swell and breezy conditions will likely result in an
elevated risk for rip currents across all beaches for the rest of
the weekend into early next week.

Relative humidity values will drop below 35% Sunday, and possibly
Monday across portions of the interior which may lead to enhanced
fire weather conditions. However, critical wind thresholds are not
expected to be met during this time frame.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

For more information...visit the National Weather Service in
Miami website at www.weather.gov/miami.

The office that day

Everything else NWS Miami, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 30, 2:18 AM ESTFreeze WarningMFLCollier, Glades, Hendry30 hr
Jan 30, 3:41 PM ESTRip Current StatementMFLBroward, Miami-Dade5 days

Nearby

Frost Advisories in Florida, 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.