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Jefferson County, CO Weather and Climate Synopsis

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Weather Summary Hourly Observations Nowcast Agricultural Weather Outlook
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US Weekly Rainfall Departure



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


National Weather Service Denver/Boulder CO
324 PM MDT Wed Apr 24 2024

.KEY MESSAGES...

- Slight Risk of severe thunderstorms Thursday, east of a line 
  from Sterling to Akron, including large hail, damaging winds and
  isolated tornadoes. A marginal risk south and west of this 
  area.

- Cool and unsettled Friday into the weekend, with accumulating 
  moderate snowfall in the mountains, widespread rain showers over
  the plains

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

JEFFERSON County, Colorado Agriculture, Lawn & Garden Weather Advisory

Click here for UKAWC Point Agricultural, Lawn & Garden Forecast/Outlook
Ag. Weather Forecast Parameter Maps:Spraying Conditions , Dewpoint Temperatures, Livestock Heat Stress

Regional Hourly Observations For JEFFERSON County
400 PM MDT WED APR 24 2024

...NORTHERN COLORADO FRONT RANGE...
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
DENVER INTL AP FAIR      77  30  17 VRB6      29.90F                  
AURORA         PTSUNNY   74  28  18 E8        29.89F                  
WATKINS        NOT AVBL                                               
ERIE           FAIR      75  38  26 N10       29.88F                  
BOULDER        FAIR      72  41  33 N9        29.91F                  
CENTENNIAL     PTSUNNY   74  30  19 SE9       29.91F                  
BROOMFIELD     PTSUNNY   75  39  27 N17       29.92F                  
FORT COLLINS   FAIR      74  38  27 N5        29.91F                  
LONGMONT       FAIR      72  41  32 N12       29.92F                  

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


Current Agricultural Weather Conditions in Colorado
Based on observations at 300pm MDT, Wednesday April 24, 2024

Across Colorado...temperatures are near 82 degrees west, near 77 degrees central, and near 72 degrees east. Current sky conditions are fair west, fair central, and fair east. In the west, relative humidity is near 11%, and the dew point is near 23 degrees. In the central part of the state, relative humidity is near 18%, and the dew point is near 31 degrees. In the east, relative humidity is near 39%, and the dew point is near 46 degrees. Winds are from the southeast at 5 mph west, where conditions are favorable for spraying. Winds are from the southeast at 8 mph central, where conditions are favorable for spraying. Winds are from the south at 23 mph with gusts at 35 mph east, where conditions are not favorable for spraying due to strong winds. Based on current available observations, the highest temperature is 82 degrees at GRAND JUNCTION. The lowest temperature is 41 degrees at WOLF CREEK PAS.


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

1106 AM MDT Wed Apr 24 2024

 DAY ONE  This Afternoon and Tonight

Only isolated showers and thunderstorms can be expected this
afternoon and evening, favoring the Wyoming and Nebraska border
areas. Gusty outflow winds to around 35 mph can be expected with 
any of the showers. 

 DAYS TWO THROUGH SEVEN  Thursday through Tuesday

Scattered showers and storms are possible Thursday afternoon 
through evening, with a slight risk of severe thunderstorms. One or 
two storms east of a line from Sterling to Akron in the late
afternoon and evening could produce hail up to golfball size, 
wind gusts to 60 mph along with a threat of a brief tornado. 

The rest of the period will remain cool and unsettled, as precipitation
is expected to become more widespread across northeastern Colorado.
There is potential for accumulating snowfall for the high country,
with several inches possible over the higher elevations. Across 
the plains, widespread rain showers with a few embedded thunderstorm
possible. 

 SPOTTER INFORMATION STATEMENT  

Spotter activation will not be needed today or tonight.

NWS Severe Weather Map , Convective Outlook


7-Day Forecast For JEFFERSON County, CO
258 PM MDT Wed Apr 24 2024

TONIGHT
Mostly cloudy in the evening then clearing. Lows 38 to 46.

THURSDAY
Mostly sunny in the morning, then mostly cloudy with a chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 60 to 70. Southwest winds 10 to 15 mph with gusts up to 25 mph in the afternoon. Chance of rain 50 percent.

THURSDAY NIGHT
Mostly cloudy with a chance of rain showers, snow showers and slight chance of thunderstorms. Lows 35 to 45. West winds 10 to 20 mph with gusts up to 35 mph. Chance of precipitation 40 percent.

FRIDAY
Rain showers likely and chance of thunderstorms. Highs 53 to 63. Northwest winds 20 to 25 mph with gusts up to 35 mph. Chance of rain 60 percent.

FRIDAY NIGHT
Rain showers, chance of thunderstorms and snow showers. Lows 31 to 41.

SATURDAY
Rain showers, snow showers and chance of thunderstorms. Highs 41 to 51.

SATURDAY NIGHT
Rain showers with snow showers likely and slight chance of thunderstorms. Lows 30 to 38.

SUNDAY
Rain showers likely, chance of thunderstorms and snow showers. Highs 44 to 54. Chance of precipitation 70 percent.

SUNDAY NIGHT
Partly cloudy with a chance of snow showers and slight chance of thunderstorms. Lows 29 to 37. Chance of snow 30 percent.

MONDAY
Partly cloudy. Warmer. Highs 55 to 65.

MONDAY NIGHT AND TUESDAY
Mostly clear. Lows 32 to 42. Highs 62 to 72.

TUESDAY NIGHT
Partly cloudy. Lows 37 to 47.

WEDNESDAY
Partly cloudy with a 10 percent chance of thunderstorms. Highs 66 to 76.

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 Colorado
                             COLORADO                                                                     
                 ---------------------------------------------
                 6 TO 10 DAY  8 TO 14 DAY   30 DAY    90 DAY 
                APR 30-MAY 4  MAY 2-MAY 8    JUN       JUN-AUG                      
                 -----------  -----------  --------  ---------
   Temperature:      Above        Above                                            
 Precipitation:      Below       Normal                                            

....  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
Historical Weather And Climate Facts For Today

APRIL 24TH
HISTORIC WEATHER EVENTS
...1899...
Two women and one son lived to tell the story of being picked up by a
tornado and carried more than a fourth of a mile, flying far above the
church steeples, before being gently set down again. The young boy and one
of the ladies said they had the pleasure of flying alongside a horse. The
horse "kicked and struggled" as it flew high above, and was set down
unharmed about a mile away. (The Weather Channel)
...1908...
Severe thunderstorms spawned eighteen tornadoes over across the Central
Gulf Coast States claiming the lives of 310 persons. The state of
Mississippi was hardest hit. A tornado near Hattiesburg MS killed 143
persons and caused more than half a million dollars damage. Four violent
tornadoes accounted for 279 of the 310 deaths. The deadliest of the four
tornadoes swelled to a width of 2.5 miles as it passed near Amite LA. The
tornado also leveled most of Purvis MS. (David Ludlum) (The Weather
Channel)
...1925...
Louisville's and Bowling Green's warmest April temperature: 91 and 96 
degrees, respectively. Also, Lexington's earliest 90 degree temperature (90 
degrees). (NWS Louisville)
...1980...
Three of eight helicopters were damaged in a sandstorm during a 
failed-attempt to rescue 52 American hostages held in Iran. The hostages 
were later released on January 20, 1981.
...2005...
The latest measurable snowfall on record occurred across parts of Kentucky 
last year. The snow was the result of cold air and moisture wrapping around 
an area of low pressure located over the northeast United States. 
Accumulating snow was mainly confined to the ridgetops and higher 
elevations of extreme east Kentucky but at least a few flakes were reported 
just about everywhere. Some amounts reported from across eastern and 
central Kentucky  include...0.6 inches in Booneville...1.0 inch at 
Jeremiah...1.2 inches at the Jackson Weather Office...1.5 inches at 
Cumberland...4.0 inches at Lynch...and 5.0 inches at Closplint. (NWS Jackson)

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