Updated 915am CT – Wednesday / 17 January 2018
… Slowly Warming Temperatures …
… Weak Disturbance With Clouds Late Thursday into Friday …
… Another Cold Front Due Sunday with A Chance of Rain …
On the Weather Map…
On the surface map… arctic high pressure is centered over eastern Oklahoma and the southern plains states. As a result of this surface weather pattern, winds are light north northeasterly.
On the upper air map… a deep trough, or line, of upper air low pressure extends south southeastward from Hudson bay southward through the Tennessee Valley. A ridge, or line, of upper air high pressure extends northward over the western USA with another trough, or line, of low pressure off the west coast of the USA. As a result of the upper air weather pattern, the 30,000 foot winds over our local area are northwesterly 30 to 40 mph.
What I am Seeing As I Look Ahead…
An unseasonably cold morning over south central Texas with lows in the teens area wide. The LCRA Hydromet weather observation network has reported lows as cold as 8 degrees in Jonestown and 9 degrees in the Leander area in northwestern Travis county / Williamson county under a clear sky this morning.
Arctic high pressure will move slowly eastward which will result in a return southerly wind as early as tomorrow morning. This will result in a slow warming trend over the area.
By late tonight into tomorrow, a weak upper air low pressure disturbance, currently over the central and southern Rockies, will move southeastward and result in more in the way of clouds especially late tomorrow into tomorrow night. By Friday, as the system moves overhead, we may see a few sprinkles develop. At this time, as I see it, temperatures will be above freezing so I do not anticipate any problems.. however, I will continue to monitor. Rainfall amounts, during this period, will average only trace amounts.
As the disturbance passes, we’ll see the clouds break Friday night into Saturday with warmer temperatures.
Clouds will increase again by Saturday night into Sunday as a cold front approaches the area. At this point, I see a better chance of rainfall by after midnight Saturday night into Sunday as the front passes. Rainfall amounts, for this event, will average 1/4 inch or less.
Clouds will break with a resulting clear to partly cloudy sky Sunday night through the first half of next week. Temperatures are forecast to be near or slightly above seasonal levels.
Have a good Wednesday….
Meteorologist Troy Kimmel
Contact me:
tkimmel@austin.utexas.edu
http://www.facebook.com/troykimmel
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Updated 845am CT.. Wednesday / 17 January 2018
TODAY…. Sunshine and unseasonably cold. High 36. North northeasterly wind 4 to 8 mph.
TONIGHT…. Clear before midnight becoming partly cloudy after midnight. Low 22. East northeasterly 4 to 8 mph becoming calm late.
THURSDAY…. Partly cloudy. High 43. Calm wind through mid morning becoming southerly 4 to 8 mph in the afternoon.
THURSDAY NIGHT…. Partly to mostly cloudy early becoming mostly cloudy late. Low 34. Light south southwesterly wind.
FRIDAY…. Mostly cloudy with a few sprinkles. A 20% chance of rain; where rainfall occurs, it will average trace amounts. High 50. Southerly wind 4 to 8 mph.
FRIDAY NIGHT…. Partly to mostly cloudy. Low 44. South southeasterly wind 4 to 8 mph.
SATURDAY…. Mostly sunny and warmer. High 69. Southerly wind 5 to 10 mph.
SATURDAY NIGHT…. Becoming mostly cloudy with a few sprinkles by 3am. A 20% chance of rain; where rainfall occurs, it will average trace amounts. Low 54. Southerly wind 5 to 12 mph.
SUNDAY…. Mostly cloudy with scattered rain showers as a cold front passes by midday. Decreasing clouds becoming partly cloudy and less humid in the afternoon. A 40% chance of rain; where rainfall occurs, it will average 1/4 inch or less. High 70. Southerly wind 5 to 12 mph shifting west northwesterly by midday.
SUNDAY NIGHT…. Mostly clear. Low 40. Northwesterly wind 5 to 10 mph.
MONDAY…. Sunshine. High 65. North northwesterly wind 5 to 10 mph.
MONDAY NIGHT…. Clear. Low 40. Light north northeasterly wind.
TUESDAY…. Sunshine. High 66. Northeasterly wind becoming easterly in the afternoon.
NATIONAL WEATHER SERVICE / 8 TO 14 DAY OUTLOOK
Valid Wednesday / 24 January 2018 through Tuesday / 30 January 2018…
Temperature… Near Average
Precipitation… Near to Slightly Above Average
AUSTIN SUNSET/SUNRISE TIMES…..
Sunrise this morning (17 January)………………………………….. 7:28 am
Sunset this evening (17 January)……………………………………. 5:55 pm
Sunrise tomorrow (18 January)………………………………………. 7:28 am
Sunset tomorrow (18 January)……………………………………….. 5:56 pm