Austin / Travis County and South Central Texas Weather Update #3
Prepared by UT University/Incident Meteorologist Troy Kimmel
125pm CT – Friday / 20 March 2015
. NWS/Flash Flood Watch Effective For All of our Area at 1pm ….
. Latest NWS/West Gulf River Forecast Center Quantitative Precipitation
Forecast (QPF) Rainfall Amounts between now and 7am Sunday still suggests 3 to 4 inches locally…
NWS WATCHES / ADVISORIES / WARNINGS:
NWS / Flash Flood Watch (Valid from 100pm Fri/20Mar2015 until 700pm Sat/21Mar2015)
Counties Included.. Williamson.. Hays and Travis (Including Austin Metro Area and IH 35
Corridor) as well as all adjacent counties
Rainfall to 3 to 4 inches or more… NWS/Austin-San Antonio forecasting isolated totals to 6 to 8 inches.
OBSERVATIONS AND MY LATEST THOUGHTS:
A weak cold front is progressing southeastward across the Austin metro area at 1pm today with
the front just passing Camp Mabry where their temperature has fallen 7 or 8 degrees in the last
hour. Temperatures ahead of the front are in the low 70s with temperatures falling into the 50s to
low 60s immediately behind the front. This front is expected to become the focus for rain shower and
thunderstorm activity in the next few hours with the approach of the upper level low over northwestern
NWS Doppler weather radar shows eastward moving rain shower and thunderstorm activity becoming
more widespread over the northwestern Texas hill country. Rain showers are also developing along
the cold front over our metro area as well as to the south of the area.. those precipitation elements are
Widespread rain showers and thunderstorms are expected by later this afternoon and continuing
through tonight and through the day Saturday with generalized 3 to 4 inch rainfall totals with isolated
heavier totals possible as noted by NWS/Austin-San Antonio.
No flooding is indicated anywhere in the area as of 1pm today.
Given the ongoing threat of heavier rainfall as well as the possibility of flooding tonight into Saturday,
all interests throughout south central Texas should remain weather aware and listen for the latest
information from the NWS/Austin-San Antonio as well as local emergency management officials.
Have your NOAA/NWS All Hazards Weather Radios reset and ready to alarm in case the
NWS/Austin-San Antonio issues additional advisories and warnings over the next 48 hours.
The LCRA Hydromet is a great way to keep informed of ground truth precipitation amounts…
The City of Austin Watershed Protection website… www.atxfloods.com … is a great way to keep
track of flooded low water crossings throughout the area.
I’ll continue to monitor the weather situation..