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Sumner County, TN Weather And Climate Synopsis

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A joint service of the UK Ag Weather Center and the National Weather Service.

National Weather Service Nashville TN
1132 PM CST Sun Dec 17 2017

.UPDATE...
FOR 06Z AVIATION DISCUSSION.

National Ag. Weather Outlook, International Ag. Weather Summary
Current Surface Map, [2nd Source TWC]

Click here for UKAWC Point Agricultural, Lawn & Garden Forecast/Outlook in case of corrupt tables.
Regional Hourly Observations For SUMNER County
Issued at 100 AM CST MON DEC 18 2017

NORTH MIDDLE TENNESSEE
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
NASHVILLE      CLOUDY    47  46  97 S5        30.14S FOG              
PORTLAND       FOG       45  45 100 S5        30.12S VSB 1            
CLARKSVILLE    CLOUDY    46  43  89 SW6       30.13S FOG              
SMYRNA         CLOUDY    46  46 100 S3        30.15F FOG              
COOKEVILLE     FOG       46  45  93 CALM      30.13S VSB 1            
GALLATIN       FOG       45  45 100 CALM      30.16S VSB 1/2          
CROSSVILLE     CLOUDY    43  42  97 CALM      30.13S FOG              

Current Temperatures, Dewpoint, RH, Wind, Regional Obs, Surface 4-Panel


Current Agricultural Weather Conditions in Tennessee
Based on observations at 100am CST, Monday December 18, 2017

Across Tennessee...temperatures are near 46 degrees west, near 47 degrees central, and near 40 degrees east. Current sky conditions are cloudy west, cloudy central, and fog east. In the west, relative humidity is near 96%, and the dew point is near 45 degrees. In the central part of the state, relative humidity is near 97%, and the dew point is near 46 degrees. In the east, relative humidity is near 100%, and the dew point is near 40 degrees. There is patchy fog central. Winds are from the southwest at 8 mph west, where conditions are favorable for spraying. Winds are from the south at 5 mph central, where conditions are favorable for spraying. Winds are calm east, where conditions are not favorable for spraying due to fog. The livestock cold stress index is in the no stress category west, no stress category central, and no stress category east. Based on current available observations, the highest temperature is 47 degrees at Nashville, Memphis NWS, and Jackson. The lowest temperature is 39 degrees at Tri Cities.


Current NOWCAST not available:
Nowcasts are not issued routinely during fair weather. Only when
precipitation or other significant weather is occuring in this county will these
forecasts be issued. Currently, there is no short term forecast in effect.

US Radar, All NWS Radars (In near-real time), Current Livestock Heat Stress Index (LSI), Current Wind Chill Map
Hazardous Weather Outlook For SUMNER County,TN

502 AM CST Sun Dec 17 2017

 DAY ONE  Today and Tonight

No hazardous weather is expected at this time.

 DAYS TWO THROUGH SEVEN  Monday through Saturday

No hazardous weather is expected at this time.

 SPOTTER INFORMATION STATEMENT  

Spotter activation will not be needed.

NWS Severe Weather Map , Convective Outlook


7-Day Forecast For SUMNER County, TN
331 PM CST Sun Dec 17 2017

TONIGHT
Cloudy. Areas of fog. Areas of drizzle. Lows in the lower 40s. South winds up to 5 mph.

MONDAY
Cloudy. Areas of fog in the morning. Areas of drizzle in the morning. Highs in the mid 50s. Southwest winds up to 10 mph.

MONDAY NIGHT
Mostly cloudy. Lows in the mid 40s. Southwest winds around 5 mph.

TUESDAY
Cloudy. Slight chance of showers in the morning, then a chance of showers in the afternoon. Highs in the upper 50s. Southwest winds 5 to 10 mph. Chance of showers 40 percent.

TUESDAY NIGHT
Showers likely. Lows in the mid 40s. West winds up to 5 mph shifting to the northeast after midnight. Chance of showers 70 percent.

WEDNESDAY
Showers likely. Highs in the lower 50s. Chance of showers 70 percent.

WEDNESDAY NIGHT
Partly cloudy. Lows in the upper 30s.

THURSDAY
Mostly sunny in the morning then becoming partly cloudy. Highs in the upper 50s.

THURSDAY NIGHT
Mostly cloudy with a 20 percent chance of showers. Lows in the upper 40s.

FRIDAY
Showers likely. Highs around 60. Chance of showers 70 percent.

FRIDAY NIGHT
Showers. Lows around 40. Chance of showers 80 percent.

SATURDAY THROUGH SUNDAY
Mostly cloudy with a 20 percent chance of rain showers. Highs in the upper 40s. Lows in the mid 30s.

12-48 Hr Surface Forecast Maps, TWC 4-Panel Surface Forecast, Fire Danger, Day 1 Precip, Day 2 Precip, Days 1-5 Precip, Severe Weather Pot.-Day 1, Day 2


Medium & Long Range Outlook For Tennessee
                            TENNESSEE                                                                     
                 ---------------------------------------------
                 6 TO 10 DAY  8 TO 14 DAY   30 DAY    90 DAY 
                   DEC 23-27 DEC 25-DEC 31    DEC       DEC-FEB                      
                 -----------  -----------  --------  ---------
   Temperature:     Normal        Below     Normal      Above                      
 Precipitation:      Above       Normal     Normal      Above                      

....  Medium and long range outlooks provided by NCEP/K. Thomas Priddy
5 Day Rainfall Forecast, 6 to 10 Day , 8 to 14 Day , Text, 30-Day Outook, 90-Day Outook, 120-Day Outlook

Almanac Information

Monday December 18, 2017 the 352th Day of Year

---------------------------------------------------
SUN
Declination -23.410000
Distance 0.999725 AU
Rise 07:53 EST Set 17:35 EST
Transit Meridian 12:43 EST
Civil Twilight Begins 07:25 EST Ends 18:03 EST

Calculations made for central point in the state.
Time in ET -- and will vary due to location and
elevation -- Priddy


Historical Weather And Climate Facts For Today

DECEMBER 18TH
HISTORIC WEATHER EVENTS
...1957...
A tornado swept across Jackson County, Williamson County and Franklin
County in southern Illinois killing eleven persons. (David Ludlum)
...1981...
A heavy lake-effect snow blanketed the southern and southeast shores of
Lake Michigan leaving up to 22 inches of snow at Valparaiso IND. (David
Ludlum)
...1983...
Record cold hit the north central states. At Havre MT the mercury plunged
to a record reading of 34 degrees below zero. (Sandra and TI Richard
Sanders - 1987)
...1984...
A storm over southern California left up to 16 inches of snow in the
mountains and upper deserts, with 13 inches reported at Lancaster. Edwards
Air Force Base was closed, and Interstate 5 was closed from Castaic to the
Tehachapis Mountains. (18th-19th) (The Weather Channel)
...1986...
A strong winter storm, which developed off the coast of New Jersey and
moved out to sea, lashed the northeastern U.S. with high winds, heavy rain,
and heavy snow. The storm left snowfall amounts of up to 30 inches in
Vermont, 24 inches in Massachusetts, and 20 inches in New Hampshire. The
highest rainfall amounts approached four inches in southern New England,
where winds gusted to 70 mph. (Storm Data)
...1987...
A weakening storm moved into the Rocky Mountain Region producing six inches
of snow at the Platoro Reservoir in the San Juan Mountains of Colorado. The
storm then spread rain and drizzle across the Southern High Plains into the
Middle Mississippi Valley, with thunderstorms over Texas. (Storm Data) (The
National Weather Summary)
...1988...
Warm weather prevailed in the central U.S. while cool weather prevailed
across the eastern states. Sheridan WY, with a record warm afternoon high
of 68 degrees, was seven degrees warmer than Key West FL. (The National
Weather Summary)
...1989...
A winter storm moving out of the Great Plains Region spread freezing rain,
sleet and snow across parts of the southeastern U.S. Freezing rain resulted
in 170 auto accidents in the Memphis area during the evening hours.
Unseasonably warm weather continued ahead of arctic cold front. Miami FL
equalled their record for December with an afternoon high of 87 degrees.
(Storm Data) (The National Weather Summary)

Ag Weather Center, Department of Biosystems & Agricultural Engineering, University of Kentucky