Sunday, December 23, 2012

cooler shot... (pm.23.dec.12)>

Sunday's stats:

Low temp: 49.5F (9.7C) -- 4:30pm
High temp: 57.0F (13.9C) -- around 11:00am
Rainfall: none

A surge of colder air spilled in from the north-northwest late this morning, causing our pleasantly mild high temp to occur before noon, with temperatures turning noticeably chillier throughout the day.  The thermometer was still on its way down as of late this afternoon when I recorded the low temp reading.  With relatively warmer air remaining in the upper-levels of the atmosphere, there has been another classic inversion setting up this afternoon, with widespread haze and fog further downhill in the valleys and onto the plains.  We've kept full sunshine up here in McLeod, however.

I'm very curious about how this fog potential is going to pan out -- it depends on minor temperature/moisture differentials in different levels of the atmosphere, so development will vary with elevation.

Today's events mark the end of our recent nearly week-long stretch of unseasonably mild conditions, as the week ahead looks like we'll be getting back closer to what we would expect during the final week of December.  During the next few days the changes will be rather subtle, but it looks like temps will turn much colder by Friday, along with the potential for some wet weather as the weekend approaches.  Computer models are all over the place with solutions, with a trend toward a weaker system with less available moisture.  I'll do my best to keep you informed as new information becomes available.

SUNDAY NIGHT:
some fog in the area... considerably cooler.
low: 7C (45F)

MONDAY:
a chance of some fog, otherwise both sun and some clouds.
high: 13C (55F)

MONDAY NIGHT:
some light fog, and perhaps a few clouds.  chilly.
low: 7C (44F)

CHRISTMAS DAY:
sunny to partly cloudy.
high: 12C (54F)

WEDNESDAY:
 a mix of sun and occasional clouds.
morning low: 7C (45F)
daytime high: 13C (55F)

THURSDAY:
some sun, with thickening clouds.  chance of a few PM showers developing.
morning low: 8C (46F)
daytime high: 13C (55F)

FRIDAY:
colder, with some rain showers possible.
morning low: 6C (42F)
daytime high: 11C (51F)