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Jefferson County, AL Weather and Climate Synopsis

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Weather Summary Hourly Observations Nowcast Agricultural Weather Outlook
7 Day Forecast Medium & Long Range Outlook Almanac Historical Facts





US Weekly Rainfall Departure



US Weekly Temperature Departure
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A joint service of the UK Ag Weather Center and the National Weather Service.


.SHORT TERM...
Today and tonight.

With high pressure in place and winds remaining very light, patchy 
fog will remain possible through 8 AM near rivers and in low-lying 
areas. Temperatures this afternoon should recover from the cold 
start this morning, and widespread 50s are expected due to 
southwesterly low-level flow and warm advection. High clouds will 
continue to overspread the region through the afternoon, but these 
clouds are not expected to substantially limit daytime heating. The 
surface pressure gradient will tighten tonight as high pressure 
shifts toward the Atlantic Coast, while low pressure develops across 
Texas. Radiational cooling should be maximized in the first few 
hours after sunset, and a slow increase in temperatures may commence 
around midnight and continue through daybreak on Thursday. Sheltered 
locations in our northeastern counties may reach the mid 30s, but 
most locations should bottom out in the low to mid 40s. 

87/Grantham

.LONG TERM...
Thursday through Saturday.

An  upper level trough digs through the Central Plains early 
Thursday. An associated surface low slides through the Southern 
Plains and into the ArkLaTex by Thursday afternoon. A pre-frontal 
shortwave trough will eject eastward into Central AL, increasing 
rain chances in the far western counties by Thursday afternoon and 
evening. 

The upper level low continue to strengthen late Thursday evening and 
into the overnight hours. As this takes place, the pre-frontal 
shortwave moves through Central AL, leading to widespread rain 
across the area. The surface low is still just to our west in the 
Lower MS River Valley, so this will increase the pressure gradient 
across Central AL, leading to gusty winds accompanying the 
widespread rain. Instability really doesn't make it into the area 
during this time, so we shouldn't have any thunderstorm development. 

During the day on Friday, the vertically stacked low pressure system 
continues to slide through Southern MS, reaching Central AL by 
Friday evening. This will steadily decrease rain chances from south-
southwest to northeast throughout the day as much of the forcing is 
lifted to our north and east. However, with the upper low directly 
overhead, I can't rule out some lingering shower activity. Also, 
elevated instability works its way into the area Friday afternoon 
with models picking up on a dry slot inching into the area. 
Considering I'm keeping PoPs in the 50-60% range Friday afternoon, 
tapering to 30-45% in the evening, I've kept mention of a slight 
chance for a few thunderstorms, but these will remain well below 
severe limits. 

The low pressure system is lifting just to our north and east by 
Saturday morning, so we'll see continued clearing of rain chances 
from south to north across the area with only a slight chance of 
lingering showers in the far northeast Saturday evening due to the 
possibility of some wrap-around moisture. Temperatures remain 
well above freezing with this system, so all precip should be in 
liquid form.

25/Owen

Sunday thru Thursday morning.

Upper level troughing will swing eastward across the Great Lakes 
region and New England states on Monday. Upper level waves 
associated with this will pass through the northern part of 
Central Alabama. Currently guidance suggests a lack of moisture 
return. Therefore, have not included mentionable PoPs for Monday. 
Upper level riding begins to build into the area on Monday evening
and surface high pressure is centralized over Alabama by Tuesday.
This will aid in relatively dry conditions for the start of the 
work week. High pressure remains in the area on Wednesday and 
begins to move out Wednesday evening/overnight as the upper level 
pattern begins to flat across the eastern U.S. 

07

Alabama Forecast Discussion (NWS)
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 JEFFERSON County
900 AM CST WED DEC 12 2018
CENTRAL ALABAMA
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
BIRMINGHAM     CLOUDY    43  33  68 CALM      30.28F                  
MONTGOMERY     FAIR      40  34  79 CALM      30.30F                  
SHELBY CO ARPT FAIR      37  31  78 S5        30.26F WCI  33          
MAXWELL AFB    FAIR      37  36  96 CALM      30.29F                  
GREENVILLE     FAIR      40  34  79 S3        30.29F                  
SELMA          FAIR      37  34  87 CALM      30.30R                  
PRATTVILLE     FAIR      33  33 100 CALM      30.30S                  
BESSEMER       FAIR      40  30  67 S6        30.26F                  
TALLADEGA      FAIR      34  31  88 CALM      30.28S                  
PELL CITY      SUNNY     34  34 100 CALM      30.29S                  
MARION         FAIR      36  36  98 S8        30.28R WCI  30          
SYLACAUGA      FAIR      36  36 100 CALM      30.28S                  

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


Current Agricultural Weather Conditions in Alabama


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.

U.S. Radar Map, All NWS Radars (In near-real time), Current Livestock Heat Stress Index (LSI), Current Wind Chill Map
Hazardous Weather Outlook For JEFFERSON County, AL

852 AM CST Wed Dec 12 2018

 DAY ONE  Outlook through Tonight.

No hazardous weather is expected at this time.

 DAYS TWO THROUGH SEVEN  Thursday through Tuesday.

No hazardous weather is expected at this time.

 SPOTTER INFORMATION STATEMENT  

Activation of storm spotters and emergency management is not
expected at this time.

NWS Severe Weather Map , Convective Outlook


7-Day Forecast For JEFFERSON County, Alabama
830 AM CST Wed Dec 12 2018

TODAY
Partly cloudy early in the morning then becoming mostly cloudy. Highs in the mid 50s. South winds around 5 mph.

TONIGHT
Mostly cloudy. Lows in the lower 40s. South winds around 5 mph.

THURSDAY
Cloudy. A 20 percent chance of rain showers in the afternoon. Highs in the upper 50s. Southeast winds 10 to 15 mph.

THURSDAY NIGHT
Rain showers. Near steady temperature around 50. East winds 10 to 15 mph. Chance of rain 90 percent.

FRIDAY
Rain showers likely and slight chance of thunderstorms. Highs in the mid 50s. South winds 10 to 15 mph. Chance of rain 70 percent.

FRIDAY NIGHT
Cloudy. Chance of rain showers and slight chance of thunderstorms in the evening, then chance of rain showers after midnight. Lows in the mid 40s. Chance of rain 50 percent.

SATURDAY
Cloudy with a 40 percent chance of rain showers. Highs in the lower 50s.

SATURDAY NIGHT
Mostly cloudy with a 20 percent chance of rain showers. Lows around 40.

SUNDAY
Partly cloudy. Highs in the upper 50s.

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

MONDAY
Partly cloudy. Highs in the mid 50s.

MONDAY NIGHT
Mostly clear. Lows in the mid 30s.

TUESDAY
Mostly sunny. Highs in the mid 50s.

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 Alabama
                              ALABAMA                                                                     
                 ---------------------------------------------
                 6 TO 10 DAY  8 TO 14 DAY   30 DAY    90 DAY 
                   DEC 17-21    DEC 19-25    DEC   DEC18-FEB19                      
                 -----------  -----------  --------  ---------
   Temperature:      Above        Above     Normal     Normal                      
 Precipitation:      Below        Above      Above      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

Wednesday December 12, 2018 the 346th Day of Year

---------------------------------------------------
SUN
Declination -23.130000
Distance 0.999724 AU
Rise 07:43 EST Set 17:41 EST
Transit Meridian 12:42 EST
Civil Twilight Begins 07:17 EST Ends 18:07 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 12TH
HISTORIC WEATHER EVENTS
...1882...
Portland OR was drenched with 7.66 inches of rain, a record 24 hour total
for that location. (12th-13th) (The Weather Channel)
...1960...
The first of three Middle Atlantic snowstorms produced a foot of snow at
Baltimore MD. A pre-winter blizzard struck the northeastern U.S. producing
wind gusts as high as 51 mph, along with 16 inches of snow at Nantucket MA,
and 20 inches at Newark NJ. (David Ludlum)
...1969...
The worst tornado of record for western Washington State tracked south of
Seattle, traveling five miles, from Des Moines to Kent. The tornado, 50 to
200 yards in width, began as a waterspout over Puget Sound. One person was
injured and the tornado caused half a million dollars damage. (The Weather
Channel)
...1987...
While a developing winter storm began to spread snow across New Mexico into
Colorado, high winds ushered unseasonably cold air into the southwestern
states. Winds in California gusted to 60 mph in the Sacramento River Delta,
and in the San Bernardino Valley. (The National Weather Summary)
...1988...
Cold arctic air spread from the Great Lakes Region to the Appalachian
Region. Twenty-five cities, mostly in the northeastern U.S., reported
record low temperatures for the date. The low of 12 degrees below zero at
Albany NY was their coldest reading of record for so early in the season.
Saranac Lake NY was the cold spot in the nation with a low of 28 degrees
below zero. (The National Weather Summary)
...1989...
A winter storm produced snow from northern Mississippi to the Middle
Atlantic Coast, with 10.5 inches reported at Powhatan VA. Heavy snow
whitened the Black Hills of South Dakota, with 36 inches reported at Deer
Mountain. Thirteen cities in the north central U.S., from Minnesota to
Texas, reported record low temperatures for the date, including Duluth MN
and Yankton SD with morning lows of 22 degrees below zero. (The National
Weather Summary) (Storm Data)

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