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Sebastian County, AR Weather and Climate Synopsis

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Weather Summary Hourly Observations Nowcast Agricultural Weather Outlook
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A joint service of the UK Ag Weather Center and the National Weather Service.


WEATHER SUMMARY FOR ARKANSAS
NATIONAL WEATHER SERVICE LITTLE ROCK AR
918 PM CST Sun Dec 17 2017

After some beneficial rainfall for many areas early Sunday 
morning...dry conditions were seen for most areas by Sunday 
afternoon. Even so...cloudy and foggy conditions kept temperatures 
cool this afternoon...with temperatures mainly in the mid 40s to low 
50s.

Late this evening...a cloudy sky continued...with areas of fog 
persisting. Some patchy drizzle was also developing. Temperatures 
have remained nearly stationary...with temperatures ranging from the 
mid to upper 40s. Expect areas of fog and drizzle to persist 
overnight...with lows mainly in the 40s. 

Dry conditions will be seen on Monday...with highs in the mid 50s to 
low 60s. A new storm system will move into the region for 
Tuesday...with showers and thunderstorms returning to the forecast. 
Some strong thunderstorms may be seen...along with some potential 
for heavy rainfall across the southern half to third of the state 
Tuesday night. This storm system will exit to the east by 
Thursday...but another storm system and strong cold front will move 
into the region late in the week. 

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 SEBASTIAN County
100 AM CST MON DEC 18 2017


NORTHWEST ARKANSAS
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
FAYETTEVILLE   CLOUDY    46  44  93 SW8       30.11R                  
FORT SMITH     CLOUDY    49  46  90 W5        30.12F                  
HARRISON       CLOUDY    47  45  93 CALM      30.08S                  
BENTONVILLE    CLOUDY    44  42  93 W7        30.12R                  
ROGERS         CLOUDY    44  43  96 W10       30.10R                  
SILOAM SPGS    CLOUDY    44  43  96 SW7       30.11R                  
HIGHFILL       CLOUDY    45  44  97 SW9       30.10S                  

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


Current Agricultural Weather Conditions in Arkansas
Based on observations at 1200am CST, Monday December 18, 2017

Across Arkansas...temperatures are near 46 degrees north, near 44 degrees central, and near 46 degrees south. Current sky conditions are cloudy north, cloudy central, and cloudy south. In the north, relative humidity is near 100%, and the dew point is near 46 degrees. In the central part of the state, relative humidity is near 100%, and the dew point is near 44 degrees. In the south, relative humidity is near 100%, and the dew point is near 46 degrees. There is patchy fog central and south. Winds are from the south at 5 mph north, where conditions are favorable for spraying. Winds are from the south at 3 mph central, where conditions are favorable for spraying. Winds are calm south, where conditions are favorable for spraying. The livestock cold stress index is in the no stress category north, no stress category central, and no stress category south. Based on current available observations, the highest temperature is 49 degrees at Fort Smith. The lowest temperature is 44 degrees at Stuttgart, Pine Bluff, and Little Rock.


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 SEBASTIAN County,AR

1248 AM CST Mon Dec 18 2017

 DAY ONE  Tonight.

POOR VISIBILITY.
RISK  Limited.
AREA  Along and West of Highway 75.
ONSET  Ongoing.

DISCUSSION  
Fog may develop early this morning across portions of eastern
Oklahoma along and west of Highway 75. Visibilities could be under
a half mile at times.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT  
Spotter Activation Not Expected.

 DAYS TWO THROUGH SEVEN  Tuesday through Sunday.
MONDAY  Dense Fog Potential.
TUESDAY  Heavy Rain Potential.
WEDNESDAY THROUGH SATURDAY  No Hazards.

EXTENDED DISCUSSION  
Fog may be ongoing Monday morning across portions of eastern
Oklahoma. Any ongoing fog will likely erode by late morning.

Another round of rainfall, some locally heavy, is looking more 
likely across far southeastern Oklahoma into west central Arkansas 
late Tuesday and Tuesday night as another upper disturbance moves 
across the region. Rainfall amounts may top 1 inch before the system 
exits to the east on Wednesday.

A strong cold front will move through the area Friday morning.
Ahead of the front on Thursday, a limited fire spread risk will
exist, as southerly winds gust to 25 mph and temperatures reach
well above normal levels. Much colder air will move into the region 
behind the front Friday and continue into next weekend.

weather.gov/tulsa contains additional information.

NWS Severe Weather Map , Convective Outlook


7-Day Forecast For SEBASTIAN County, Arkansas
1234 AM CST Mon Dec 18 2017

REST OF TONIGHT
Cloudy. Lows in the mid 40s. Light winds.

MONDAY
Mostly cloudy early in the morning then clearing. Highs in the mid 60s. Light winds.

MONDAY NIGHT
Partly cloudy in the evening then becoming mostly cloudy. A 20 percent chance of rain showers. Lows in the upper 40s. Light winds.

TUESDAY
Mostly cloudy in the morning then becoming cloudy. A 50 percent chance of rain showers. Highs in the mid 60s. Light winds.

TUESDAY NIGHT
Rain showers likely. Lows around 50. Light winds. Chance of showers 70 percent.

WEDNESDAY
Cloudy with a 20 percent chance of rain showers in the morning, then partly cloudy in the afternoon. Highs in the mid 60s.

WEDNESDAY NIGHT
Partly cloudy. Lows in the upper 40s.

THURSDAY
Mostly sunny. Highs around 70.

THURSDAY NIGHT
Partly cloudy in the evening then becoming mostly cloudy. A 30 percent chance of rain showers. Lows in the lower 40s.

FRIDAY
Mostly cloudy with a 50 percent chance of rain showers. Highs in the mid 40s.

FRIDAY NIGHT
Partly cloudy. Lows in the upper 20s.

SATURDAY
Mostly sunny. Highs in the mid 40s.

SATURDAY NIGHT
Partly cloudy. Lows in the upper 20s.

SUNDAY
Partly cloudy in the morning then becoming mostly cloudy. Highs in the lower 40s.

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 Arkansas
                             ARKANSAS                                                                     
                 ---------------------------------------------
                 6 TO 10 DAY  8 TO 14 DAY   30 DAY    90 DAY 
                   DEC 23-27 DEC 25-DEC 31    DEC       DEC-FEB                      
                 -----------  -----------  --------  ---------
   Temperature:      Below        Below      Above      Above                      
 Precipitation:      Above        Above      Below      Below                      

....  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 08:11 EST Set 18:01 EST
Transit Meridian 13:05 EST
Civil Twilight Begins 07:44 EST Ends 18:28 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