Freeze Warning 4, NWS Tucson, AZ

097 
WWUS75 KTWC 292149
NPWTWC

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TUCSON AZ
249 PM MST TUE NOV 29 2016

AZZ503-301200-
/O.CON.KTWC.HZ.W.0002.161130T0700Z-161130T1600Z/
/O.CON.KTWC.HZ.W.0003.161201T0700Z-161201T1600Z/
UPPER SANTA CRUZ RIVER VALLEY/ALTAR VALLEY-
INCLUDING THE CITY OF...NOGALES
249 PM MST TUE NOV 29 2016

...HARD FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO
9 AM MST WEDNESDAY...
...HARD FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT WEDNESDAY
NIGHT TO 9 AM MST THURSDAY...

* IMPACTS...TEMPERATURES FALLING WELL BELOW FREEZING MAY DAMAGE 
  OR BURST EXPOSED PIPES. THESE CONDITIONS WILL KILL SENSITIVE 
  VEGETATION.

* TEMPERATURES...LOWER TO MIDDLE 20S.

* TIMING...TEMPERATURES WILL FALL BELOW 32 DEGREES BETWEEN 
  MIDNIGHT AND 1 AM...WITH COLDEST TEMPERATURES BETWEEN 4 AM TO 
  JUST AFTER SUNRISE. 

* FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT 
  WEATHER.GOV/TUCSON AND CLICK ON THE DETAILED HAZARDS TAB 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HARD FREEZE WARNING MEANS WIDESPREAD TEMPERATURES AT OR BELOW
28 DEGREES ARE EXPECTED...WITH SUB-FREEZING TEMPERATURES EXPECTED
FOR SEVERAL HOURS. 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. THESE CONDITIONS WILL ALSO KILL CROPS
AND OTHER SENSITIVE VEGETATION. PETS SHOULD BE BROUGHT INDOORS.

&&

$$

AZZ502-504>506-301200-
/O.CON.KTWC.FZ.W.0003.161130T0700Z-161130T1600Z/
/O.CON.KTWC.FZ.W.0004.161201T0700Z-161201T1600Z/
TOHONO O'ODHAM NATION-TUCSON METRO AREA-
SOUTH CENTRAL PINAL COUNTY-SOUTHEAST PINAL COUNTY-
INCLUDING THE CITIES OF...SELLS...TUCSON...GREEN VALLEY...
MARANA...VAIL...PICACHO PEAK STATE PARK...MAMMOTH...ORACLE
249 PM MST TUE NOV 29 2016

...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM
MST WEDNESDAY...
...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT WEDNESDAY NIGHT
TO 9 AM MST THURSDAY...

* IMPACTS...SENSITIVE VEGETATION AND OUTDOOR EXPOSED PIPES MAY 
  BE DAMAGED.

* TEMPERATURES...UPPER 20S TO LOWER 30S.

* TIMING...TEMPERATURES WILL BEGIN TO APPROACH FREEZING AROUND 1 
  TO 2 AM IN COLDEST LOCATIONS. COLDEST TEMPERATURES SHOULD BE 
  BETWEEN 5 AM TO JUST AFTER SUNRISE. 

* FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT 
  WEATHER.GOV/TUCSON AND CLICK ON THE DETAILED HAZARDS TAB 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE EXPECTED.
THESE TEMPERATURES WILL KILL SENSITIVE CROPS AND VEGETATION.
COVER THEM...IF POSSIBLE...WITH CLOTH SHEETS OR BLANKETS TO
PROTECT THEM FROM FREEZING. PETS SHOULD BE BROUGHT INDOORS.

&&

$$

VISIT US ON FACEBOOK...TWITTER...YOUTUBE...AND AT WEATHER.GOV/TUCSON

320 
WWUS75 KTWC 300357
NPWTWC

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TUCSON AZ
857 PM MST TUE NOV 29 2016

AZZ503-301200-
/O.CON.KTWC.HZ.W.0002.161130T0700Z-161130T1600Z/
/O.CON.KTWC.HZ.W.0003.161201T0700Z-161201T1600Z/
UPPER SANTA CRUZ RIVER VALLEY/ALTAR VALLEY-
INCLUDING THE CITY OF...NOGALES
857 PM MST TUE NOV 29 2016

...HARD FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO
9 AM MST WEDNESDAY...
...HARD FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT WEDNESDAY
NIGHT TO 9 AM MST THURSDAY...

* IMPACTS...TEMPERATURES FALLING WELL BELOW FREEZING MAY DAMAGE 
  OR BURST EXPOSED PIPES. THESE CONDITIONS WILL KILL SENSITIVE 
  VEGETATION. 

* TEMPERATURES...LOWER TO MIDDLE 20S.

* TIMING...TEMPERATURES WILL FALL BELOW 32 DEGREES BETWEEN 
  MIDNIGHT AND 1 AM...WITH COLDEST TEMPERATURES BETWEEN 4 AM TO 
  JUST AFTER SUNRISE. 

* FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT 
  WEATHER.GOV/TUCSON AND CLICK ON THE DETAILED HAZARDS TAB 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HARD FREEZE WARNING MEANS WIDESPREAD TEMPERATURES AT OR BELOW
28 DEGREES ARE EXPECTED...WITH SUB-FREEZING TEMPERATURES EXPECTED
FOR SEVERAL HOURS. 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. THESE CONDITIONS WILL ALSO KILL CROPS
AND OTHER SENSITIVE VEGETATION. PETS SHOULD BE BROUGHT INDOORS.

&&

$$

AZZ502-504>506-301200-
/O.CON.KTWC.FZ.W.0003.161130T0700Z-161130T1600Z/
/O.CON.KTWC.FZ.W.0004.161201T0700Z-161201T1600Z/
TOHONO O'ODHAM NATION-TUCSON METRO AREA-
SOUTH CENTRAL PINAL COUNTY-SOUTHEAST PINAL COUNTY-
INCLUDING THE CITIES OF...SELLS...TUCSON...GREEN VALLEY...
MARANA...VAIL...PICACHO PEAK STATE PARK...MAMMOTH...ORACLE
857 PM MST TUE NOV 29 2016

...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM
MST WEDNESDAY...
...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT WEDNESDAY NIGHT
TO 9 AM MST THURSDAY...

* IMPACTS...SENSITIVE VEGETATION AND OUTDOOR EXPOSED PIPES MAY 
  BE DAMAGED. 

* TEMPERATURES...UPPER 20S TO LOWER 30S.

* TIMING...TEMPERATURES WILL BEGIN TO APPROACH FREEZING AROUND 1 
  TO 2 AM IN COLDEST LOCATIONS. COLDEST TEMPERATURES SHOULD BE 
  BETWEEN 5 AM TO JUST AFTER SUNRISE. 

* FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT 
  WEATHER.GOV/TUCSON AND CLICK ON THE DETAILED HAZARDS TAB 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE EXPECTED.
THESE TEMPERATURES WILL KILL SENSITIVE CROPS AND VEGETATION.
COVER THEM...IF POSSIBLE...WITH CLOTH SHEETS OR BLANKETS TO
PROTECT THEM FROM FREEZING. PETS SHOULD BE BROUGHT INDOORS.

&&

$$

VISIT US ON FACEBOOK...TWITTER...YOUTUBE...AND AT WEATHER.GOV/TUCSON

881 
WWUS75 KTWC 300938
NPWTWC

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TUCSON AZ
238 AM MST WED NOV 30 2016

AZZ503-302245-
/O.CON.KTWC.HZ.W.0002.000000T0000Z-161130T1600Z/
/O.CON.KTWC.HZ.W.0003.161201T0700Z-161201T1600Z/
UPPER SANTA CRUZ RIVER VALLEY/ALTAR VALLEY-
INCLUDING THE CITY OF...NOGALES
238 AM MST WED NOV 30 2016

...HARD FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM MST THIS
MORNING...
...HARD FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO
9 AM MST THURSDAY...

* IMPACTS...TEMPERATURES FALLING WELL BELOW FREEZING MAY DAMAGE 
  OR BURST EXPOSED PIPES. THESE CONDITIONS WILL KILL SENSITIVE 
  VEGETATION. 

* TEMPERATURES...LOWER TO MIDDLE 20S.

* TIMING...TEMPERATURES WILL FALL BELOW FREEZING BY MIDNIGHT IN
  COLDEST LOCATIONS. COLDEST TEMPERATURES BETWEEN 4 AM TO JUST
  AFTER SUNRISE.

* FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT 
  WEATHER.GOV/TUCSON AND CLICK ON THE DETAILED HAZARDS TAB 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HARD FREEZE WARNING MEANS WIDESPREAD TEMPERATURES AT OR BELOW
28 DEGREES ARE EXPECTED...WITH SUB-FREEZING TEMPERATURES EXPECTED
FOR SEVERAL HOURS. 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. THESE CONDITIONS WILL ALSO KILL CROPS
AND OTHER SENSITIVE VEGETATION. PETS SHOULD BE BROUGHT INDOORS.

&&

$$

AZZ502-504>506-302245-
/O.CON.KTWC.FZ.W.0003.000000T0000Z-161130T1600Z/
/O.CON.KTWC.FZ.W.0004.161201T0700Z-161201T1600Z/
TOHONO O'ODHAM NATION-TUCSON METRO AREA-
SOUTH CENTRAL PINAL COUNTY-SOUTHEAST PINAL COUNTY-
INCLUDING THE CITIES OF...SELLS...TUCSON...GREEN VALLEY...
MARANA...VAIL...PICACHO PEAK STATE PARK...MAMMOTH...ORACLE
238 AM MST WED NOV 30 2016

...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM MST THIS MORNING...
...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM
MST THURSDAY...

* IMPACTS...SENSITIVE VEGETATION AND OUTDOOR EXPOSED PIPES MAY 
  BE DAMAGED. 

* TEMPERATURES...UPPER 20S TO LOWER 30S.

* TIMING...TEMPERATURES WILL BEGIN TO APPROACH FREEZING AROUND 1 
  TO 2 AM IN COLDEST LOCATIONS. COLDEST TEMPERATURES SHOULD BE 
  BETWEEN 5 AM TO JUST AFTER SUNRISE. 

* FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT 
  WEATHER.GOV/TUCSON AND CLICK ON THE DETAILED HAZARDS TAB 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE EXPECTED.
THESE TEMPERATURES WILL KILL SENSITIVE CROPS AND VEGETATION.
COVER THEM...IF POSSIBLE...WITH CLOTH SHEETS OR BLANKETS TO
PROTECT THEM FROM FREEZING. PETS SHOULD BE BROUGHT INDOORS.

&&

$$


VISIT US ON FACEBOOK...TWITTER...YOUTUBE...AND AT WEATHER.GOV/TUCSON

063 
WWUS75 KTWC 301602
NPWTWC

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TUCSON AZ
902 AM MST WED NOV 30 2016

AZZ503-010015-
/O.EXP.KTWC.HZ.W.0002.000000T0000Z-161130T1600Z/
/O.CON.KTWC.HZ.W.0003.161201T0700Z-161201T1600Z/
UPPER SANTA CRUZ RIVER VALLEY/ALTAR VALLEY-
INCLUDING THE CITY OF...NOGALES
902 AM MST WED NOV 30 2016

...HARD FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO
9 AM MST THURSDAY...
...HARD FREEZE WARNING HAS EXPIRED...

* IMPACTS...TEMPERATURES FALLING WELL BELOW FREEZING MAY DAMAGE 
  OR BURST EXPOSED PIPES. THESE CONDITIONS WILL KILL SENSITIVE 
  VEGETATION. 

* TEMPERATURES...LOWER TO MIDDLE 20S.

* TIMING...TEMPERATURES WILL FALL BELOW FREEZING BY MIDNIGHT IN 
  COLDEST LOCATIONS. COLDEST TEMPERATURES BETWEEN 4 AM TO JUST 
  AFTER SUNRISE. 

* FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT 
  WEATHER.GOV/TUCSON AND CLICK ON THE DETAILED HAZARDS TAB 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HARD FREEZE WARNING MEANS WIDESPREAD TEMPERATURES AT OR BELOW
28 DEGREES ARE EXPECTED...WITH SUB-FREEZING TEMPERATURES EXPECTED
FOR SEVERAL HOURS. 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. THESE CONDITIONS WILL ALSO KILL CROPS
AND OTHER SENSITIVE VEGETATION. PETS SHOULD BE BROUGHT INDOORS.

A HARD FREEZE WARNING MEANS WIDESPREAD TEMPERATURES AT OR BELOW
28 DEGREES ARE EXPECTED...WITH SUB-FREEZING TEMPERATURES EXPECTED
FOR SEVERAL HOURS. 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. THESE CONDITIONS WILL ALSO KILL CROPS
AND OTHER SENSITIVE VEGETATION.

&&

$$

AZZ502-504>506-010015-
/O.EXP.KTWC.FZ.W.0003.000000T0000Z-161130T1600Z/
/O.CON.KTWC.FZ.W.0004.161201T0700Z-161201T1600Z/
TOHONO O'ODHAM NATION-TUCSON METRO AREA-
SOUTH CENTRAL PINAL COUNTY-SOUTHEAST PINAL COUNTY-
INCLUDING THE CITIES OF...SELLS...TUCSON...GREEN VALLEY...
MARANA...VAIL...PICACHO PEAK STATE PARK...MAMMOTH...ORACLE
902 AM MST WED NOV 30 2016

...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM
MST THURSDAY...
...FREEZE WARNING HAS EXPIRED...

* IMPACTS...SENSITIVE VEGETATION AND OUTDOOR EXPOSED PIPES MAY 
  BE DAMAGED. 

* TEMPERATURES...UPPER 20S TO LOWER 30S.

* TIMING...TEMPERATURES WILL BEGIN TO APPROACH FREEZING AROUND 1 
  TO 2 AM IN COLDEST LOCATIONS. COLDEST TEMPERATURES SHOULD BE 
  BETWEEN 5 AM TO JUST AFTER SUNRISE. 

* FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT 
  WEATHER.GOV/TUCSON AND CLICK ON THE DETAILED HAZARDS TAB 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE EXPECTED.
THESE TEMPERATURES WILL KILL SENSITIVE CROPS AND VEGETATION.
COVER THEM...IF POSSIBLE...WITH CLOTH SHEETS OR BLANKETS TO
PROTECT THEM FROM FREEZING. PETS SHOULD BE BROUGHT INDOORS.

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE EXPECTED.
THESE TEMPERATURES WILL KILL SENSITIVE CROPS AND VEGETATION.
COVER THEM...IF POSSIBLE...WITH CLOTH SHEETS OR BLANKETS TO
PROTECT THEM FROM FREEZING.

&&

$$


VISIT US ON FACEBOOK...TWITTER...YOUTUBE...AND AT WEATHER.GOV/TUCSON

482 
WWUS75 KTWC 302124
NPWTWC

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TUCSON AZ
224 PM MST WED NOV 30 2016

AZZ503-010600-
/O.CON.KTWC.HZ.W.0003.161201T0700Z-161201T1600Z/
UPPER SANTA CRUZ RIVER VALLEY/ALTAR VALLEY-
INCLUDING THE CITY OF...NOGALES
224 PM MST WED NOV 30 2016

...HARD FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO
9 AM MST THURSDAY...

* IMPACTS...TEMPERATURES FALLING WELL BELOW FREEZING MAY DAMAGE 
  OR BURST EXPOSED PIPES. THESE CONDITIONS WILL KILL SENSITIVE 
  VEGETATION. 

* TEMPERATURES...LOWER TO MIDDLE 20S.

* TIMING...TEMPERATURES WILL FALL BELOW FREEZING BY MIDNIGHT IN 
  COLDEST LOCATIONS. COLDEST TEMPERATURES BETWEEN 4 AM TO JUST 
  AFTER SUNRISE. 

* FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT 
  WEATHER.GOV/TUCSON AND CLICK ON THE DETAILED HAZARDS TAB 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HARD FREEZE WARNING MEANS WIDESPREAD TEMPERATURES AT OR BELOW
28 DEGREES ARE EXPECTED...WITH SUB-FREEZING TEMPERATURES EXPECTED
FOR SEVERAL HOURS. 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. THESE CONDITIONS WILL ALSO KILL CROPS
AND OTHER SENSITIVE VEGETATION. PETS SHOULD BE BROUGHT INDOORS.

&&

$$

AZZ502-504>506-010600-
/O.CON.KTWC.FZ.W.0004.161201T0700Z-161201T1600Z/
TOHONO O'ODHAM NATION-TUCSON METRO AREA-
SOUTH CENTRAL PINAL COUNTY-SOUTHEAST PINAL COUNTY-
INCLUDING THE CITIES OF...SELLS...TUCSON...GREEN VALLEY...
MARANA...VAIL...PICACHO PEAK STATE PARK...MAMMOTH...ORACLE
224 PM MST WED NOV 30 2016

...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM
MST THURSDAY...

* IMPACTS...SENSITIVE VEGETATION AND OUTDOOR EXPOSED PIPES MAY 
  BE DAMAGED. 

* TEMPERATURES...UPPER 20S TO LOWER 30S.

* TIMING...TEMPERATURES WILL BEGIN TO APPROACH FREEZING AROUND 2
  AM IN COLDEST LOCATIONS. COLDEST TEMPERATURES SHOULD BE BETWEEN
  5 AM TO JUST AFTER SUNRISE.

* FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT 
  WEATHER.GOV/TUCSON AND CLICK ON THE DETAILED HAZARDS TAB 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE EXPECTED.
THESE TEMPERATURES WILL KILL SENSITIVE CROPS AND VEGETATION.
COVER THEM...IF POSSIBLE...WITH CLOTH SHEETS OR BLANKETS TO
PROTECT THEM FROM FREEZING. PETS SHOULD BE BROUGHT INDOORS.

&&

$$


VISIT US ON FACEBOOK...TWITTER...YOUTUBE...AND AT WEATHER.GOV/TUCSON

534 
WWUS75 KTWC 010316
NPWTWC

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TUCSON AZ
816 PM MST WED NOV 30 2016

AZZ503-011600-
/O.CON.KTWC.HZ.W.0003.161201T0700Z-161201T1600Z/
UPPER SANTA CRUZ RIVER VALLEY/ALTAR VALLEY-
INCLUDING THE CITY OF...NOGALES
816 PM MST WED NOV 30 2016

...HARD FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO
9 AM MST THURSDAY...

* IMPACTS...TEMPERATURES FALLING WELL BELOW FREEZING MAY DAMAGE 
  OR BURST EXPOSED PIPES. THESE CONDITIONS WILL KILL SENSITIVE 
  VEGETATION. 

* TEMPERATURES...LOWER TO MIDDLE 20S.

* TIMING...TEMPERATURES WILL FALL BELOW FREEZING BY MIDNIGHT IN 
  COLDEST LOCATIONS. COLDEST TEMPERATURES BETWEEN 4 AM TO JUST 
  AFTER SUNRISE. 

* FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT 
  WEATHER.GOV/TUCSON AND CLICK ON THE DETAILED HAZARDS TAB 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HARD FREEZE WARNING MEANS WIDESPREAD TEMPERATURES AT OR BELOW
28 DEGREES ARE EXPECTED...WITH SUB-FREEZING TEMPERATURES EXPECTED
FOR SEVERAL HOURS. 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. THESE CONDITIONS WILL ALSO KILL CROPS
AND OTHER SENSITIVE VEGETATION. PETS SHOULD BE BROUGHT INDOORS.

&&

$$

AZZ502-504>506-011600-
/O.CON.KTWC.FZ.W.0004.161201T0700Z-161201T1600Z/
TOHONO O'ODHAM NATION-TUCSON METRO AREA-
SOUTH CENTRAL PINAL COUNTY-SOUTHEAST PINAL COUNTY-
INCLUDING THE CITIES OF...SELLS...TUCSON...GREEN VALLEY...
MARANA...VAIL...PICACHO PEAK STATE PARK...MAMMOTH...ORACLE
816 PM MST WED NOV 30 2016

...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM
MST THURSDAY...

* IMPACTS...SENSITIVE VEGETATION AND OUTDOOR EXPOSED PIPES MAY 
  BE DAMAGED. 

* TEMPERATURES...UPPER 20S TO LOWER 30S.

* TIMING...TEMPERATURES WILL BEGIN TO APPROACH FREEZING AROUND 2 
  AM IN COLDEST LOCATIONS. COLDEST TEMPERATURES SHOULD BE 
  BETWEEN 5 AM TO JUST AFTER SUNRISE. 

* FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT 
  WEATHER.GOV/TUCSON AND CLICK ON THE DETAILED HAZARDS TAB 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE EXPECTED.
THESE TEMPERATURES WILL KILL SENSITIVE CROPS AND VEGETATION.
COVER THEM...IF POSSIBLE...WITH CLOTH SHEETS OR BLANKETS TO
PROTECT THEM FROM FREEZING. PETS SHOULD BE BROUGHT INDOORS.

&&

$$

VISIT US ON FACEBOOK...TWITTER...YOUTUBE...AND AT WEATHER.GOV/TUCSON

671 
WWUS75 KTWC 011604
NPWTWC

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TUCSON AZ
904 AM MST THU DEC 1 2016

AZZ503-011715-
/O.EXP.KTWC.HZ.W.0003.000000T0000Z-161201T1600Z/
UPPER SANTA CRUZ RIVER VALLEY/ALTAR VALLEY-
INCLUDING THE CITY OF...NOGALES
904 AM MST THU DEC 1 2016

...HARD FREEZE WARNING HAS EXPIRED...

TEMPERATURES HAVE WARMED ABOVE FREEZING AT 9 AM THIS MORNING.
THEREFORE...THE HARD FREEZE WARNING HAS BEEN ALLOWED TO EXPIRE.

$$

AZZ502-504>506-011715-
/O.EXP.KTWC.FZ.W.0004.000000T0000Z-161201T1600Z/
TOHONO O'ODHAM NATION-TUCSON METRO AREA-
SOUTH CENTRAL PINAL COUNTY-SOUTHEAST PINAL COUNTY-
INCLUDING THE CITIES OF...SELLS...TUCSON...GREEN VALLEY...
MARANA...VAIL...PICACHO PEAK STATE PARK...MAMMOTH...ORACLE
904 AM MST THU DEC 1 2016

...FREEZE WARNING HAS EXPIRED...

TEMPERATURES HAVE WARMED WELL ABOVE FREEZING AT 9 AM THIS MORNING.
THEREFORE...THE FREEZE WARNING HAS BEEN ALLOWED TO EXPIRE.

$$

VISIT US ON FACEBOOK...TWITTER...YOUTUBE...AND AT WEATHER.GOV/TUCSON

Area Forecast Discussion
National Weather Service Tucson AZ
905 PM MST Mon Nov 28 2016

.SYNOPSIS...A few light valley rain and mountain snow showers will
occur mainly from Tucson eastward into Tuesday morning. Much cooler
temperatures and the coldest lows of the season so far Tuesday night
and Wednesday night, with widespread freeze or hard freeze
conditions for Southeast Arizona. Temperatures will remain below
average through the week, and another storm system may bring a
chance of valley rain and mountain snow Friday into the weekend.

&&

.DISCUSSION...IR satellite imagery depicts mostly cloudy to cloudy
skies across southeast Arizona this evening, with broken to overcast
mostly lower level clouds as per several surface observations valid
8 pm MST. A broad upper trough extended from the intermountain west
eastward into central CONUS plains. A speed max/vort lobe was
embedded within the southwestern periphery of this upper trough as
per the 29/00Z upper air plots. IR satellite imagery also depicted a
distinct back edge to the lower level clouds, with clearing skies or
mostly clear skies from KPHX northwestward into southern Nevada.

A linear extrapolation of this back edge of lower clouds feature
would suggest that clearing skies would encroach upon the Tucson
metro area within a few hours, or perhaps around 11 pm - midnight or
such. However, some hi-res models such as the HRRR and the 29/00Z
Univ of AZ WRF-NAM suggests a potential for at least isolated valley
rain/mountain snow showers from near Tucson eastward to the New
Mexico into Tuesday morning.

Thus, am inclined to make no changes to the inherited official
forecast at this time. Expect isolated to scattered valley rain/
mountain snow showers into Tuesday morning. The exception will be
across western Pima County where precip-free conditions are
expected. Any rain amounts at lower elevations will be quite light,
or mostly less than 0.10". Snow accumulations (as noted in the
Previous Discussion) should only be from 1-2 inches or so above
5000 feet.

A few lingering showers may occur Tuesday afternoon across southern
Cochise County. Clear skies or mostly clear skies will then prevail
Tuesday night into Wednesday morning, setting the stage for the
coldest night of the season thus far. A Freeze Watch and a Hard
Freeze Watch will continue from late Tuesday night through Wednesday
morning. Please refer to AWIPS product PHXNPWTWC - WMO header WWUS75
KTWC for more information.

&&

.AVIATION...Valid through 30/06Z.
Expect isolated to scattered -SHRA and mountain -SHSN mainly KTUS
eastward to the New Mexico border into Tuesday morning. MVFR
conditions will occur especially across higher terrain. A few
lingering -SHRA mostly from KFHU-KDUG Tuesday afternoon, then
clearing skies Tuesday evening. Surface wind east/south of KTUS
wly/nwly at 10-18 kts with gusts to 25 kts. Surface wind KTUS
vicinity westward generally less than 10 kts thru the period.
Aviation discussion not updated for TAF amendments.

&&

.FIRE WEATHER...A few valley rain and mountain snow showers will
occur from Tucson eastward into Tuesday morning, then a few showers
across southern Cochise County Tuesday afternoon. Dry conditions
will then occur Wednesday into Thursday. A low pressure system may
then bring more wintry weather and gusty east winds Friday into
this weekend.

&&

.PREV DISCUSSION /145 PM MST/...Latest water vapor imagery shows
northwesterly flow aloft across the forecast area with one final
disturbance near the CA/NV border moving southeast. There is still
considerable low to mid level clouds north of Tucson and partly
sunny conditions with mainly cirroform clouds for the remainder of
the forecast area. Latest model trends have generally backed off a
bit on this final moisture starved system tonight into Tuesday
morning. Still looking at a few showers and mountain snow showers
starting as early as this afternoon across the White Mountains, then
continuing tonight into Tuesday morning, mainly from Tucson north
and eastward. Another inch or two of snow is possible in the
mountains from Tucson north and east with snow levels will be around
5000 feet. This system will also keep temperatures from crashing
overnight.

The aforementioned disturbance will move east of the area Tuesday
morning with any residual chance of showers coming to an end. With
skies clearing through the day from west to east, this will set the
stage for the coldest night of the season for Wednesday morning. A
freeze watch remains in effect for most desert locations from Tucson
westward except the far western deserts near Ajo and Organ Pipe
National Monument. A hard freeze watch is also in effect for much of
Santa Cruz County and the higher elevations of South Central Pima
County including the Arivaca and Sasabe areas which haven't had a
widespread freeze yet. The eastern valleys of Graham/Greenlee/
Cochise counties will also see a hard freeze but these locations
have had a widespread freeze already this season so will not issue
any headlines there.

Fairly benign and continued cool on Wednesday and Thursday with dry
westerly flow aloft. Thursday morning will be rather cold once again
but likely a couple of degrees warmer than Wednesday morning. By
Friday into the weekend our attention focuses toward a closed low
that will move south from the Great Basin into Arizona and then
possibly northern Mexico. Still lots of uncertainty with this system
as the ECMWF has been depicting a much more progressive and open
wave solution compared to the GFS/CMC for the past couple of runs.
Will lean towards the GFS/CMC and GEFS ensemble mean which is
somewhat slower and more closed off than the ECMWF. Regarding
sensible weather, will maintain slight chance to low end chance PoPs
starting Friday, then continuing into Saturday before winding down
on Sunday. Early indications are that snow levels will be about 5000
feet with this system.

&&

.TWC WATCHES/WARNINGS/ADVISORIES...
Freeze Watch from late Tuesday night through Wednesday morning for
AZZ502-504>506.

Hard Freeze Watch from late Tuesday night through Wednesday
morning for AZZ503.

&&

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