Lexington Weather

Lexington, Massachusetts, USA

56°F

5/20/2024 10:57pm

Lexington Conditions: Clear
Temperature: 55.6°F / 13.1°C
Dew Point: 52.3°F
Relative Humidity: 89%
Wind: Calm, 10-min avg: Calm, gust: 1 mph
Barometer: 29.96 in Steady
Visibility: 10 miles
Rain Today: 0.00 in

Area Forecast Discussion
for North Platte, NE

        
000
FXUS63 KLBF 161747
AFDLBF

Area Forecast Discussion
National Weather Service North Platte NE
1247 PM CDT Thu May 16 2024

.KEY MESSAGES...

- Dry over the next 48 to 60 hours and very warm Friday. 

- Chances increase for showers/thunderstorms after Saturday as a 
  more active pattern settles into the central CONUS.

&&

.SHORT TERM /THROUGH FRIDAY/...
Issued at 310 AM CDT Thu May 16 2024

Weak surface high pressure will slide south and east of the 
forecast area today. At the same time, a weak upper level 
disturbance will track across North Dakota leading to the 
development of surface low pressure over western North Dakota. 
Winds will be light from the west today, north of the exiting 
high and east of a weak surface trough, oriented from western 
North Dakota into the Nebraska Panhandle. For highs today, MET, 
MAV and ECS forecast highs were in close agreement across the 
forecast area, and blended all three of these members for 
afternoon highs. This yielded highs in the upper 70s to around 
80. Winds tonight will shift to the south and southwest, 
remaining light. With abundant dry air in place, overnight lows 
will bottom out around 50 degrees. On Friday, an upper level 
disturbance will lift across Montana. Surface low pressure will 
deepen over western South Dakota. A surface trough will trail 
south of this feature into western Nebraska. The latest NAM12 
soln has the trough axis roughly along the highway 83 corridor 
Friday afternoon. East of the trough axis, winds will be 
southerly with westerly and southwesterly winds west of the 
axis. West of the trough, very warm air is forecast with H85 
temps reaching 25 to 28C Friday afternoon. Like this afternoon, 
there is good agreement between the MET, MAV and ECS guidance 
for highs Friday. Utilizing a blend of the three, yielded highs 
in the upper 80s to around 90.

&&

.LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/...
Issued at 310 AM CDT Thu May 16 2024

Showers and thunderstorms will develop in advance of the 
Montana shortwave Friday afternoon and evening. The latest NBM 
forecast did place some low pops in the northwestern forecast 
area overnight Friday night. Looking at the latest QPF 
probabilities Friday night, there was less than a 15 percent 
chance of 0.01 inches of QPF in the northwestern forecast area. 
After collaborating with UNR, went ahead and pulled out the 
mention of pops Friday night. The shortwave trough will track 
across North Dakota on Saturday forcing a frontal boundary 
through the forecast area late Friday night into Saturday 
morning. Surface high pressure will build into the area Saturday
afternoon, resulting in high temperatures in the 70s. On 
Saturday night, a broad trough of low pressure aloft will lift 
into the intermountain west. A weak disturbance will lead to 
shower and thunderstorm development over eastern Colorado into 
Kansas. Precipitation chances will be limited across the 
forecast area Saturday night due to a lack of low level 
moisture. A developing surface trough and southerly winds, will 
push moisture into the forecast area Sunday. With west 
southwesterly flow aloft in place, thunderstorm chances will 
increase Sunday across the area. Thunderstorm chances will 
persist thorugh Tuesday night as persistent west southwesterly 
flow aloft continues. This pattern will transition to more zonal
toward midweek, decreasing the threat for showers and 
thunderstorms.

&&

.AVIATION /18Z TAFS THROUGH 18Z FRIDAY/...
Issued at 1244 PM CDT Thu May 16 2024

VFR conditions will prevail this afternoon through tonight
across all of western and north central Nebraska. Winds will be
light through tonight at 10 kts or less. Similar conditions are
expected during the day Friday.  

&&

.LBF WATCHES/WARNINGS/ADVISORIES...
None.

&&

$$

SYNOPSIS...Buttler
SHORT TERM...Buttler 
LONG TERM...Buttler 
AVIATION...Taylor