Not much rain so far today....


Seems like the Helotes area has been in a "dry zone" today as the upper level low drifts slowly to our NE. While we did gauge 1.32 over the past 24 hrs, most of that fell before midnight. Since then, we've only gotten less than a tenth of an inch of rain.

As I write this, around 3pm., there is a broken, rather anemic line of storms to our west. With the sun out and temperatures on the rise, it would not surprise me to see these grow a bit and give us a chance for a storm around sunset. As for the rest of the weekend, here is the latest from NOAA:


NOAA 3pm Storm Update

We expect scattered showers and thunderstorms
with light to moderate rain to continue through mid-evening,
then taper off except over the Edwards Plateau -- closer to
the upper low.

The slow moving upper low will be pulled northeast on
Saturday as another low moves through the southern
Plains. We expect another big round of showers and thunderstorms
Saturday afternoon, most likely for locations along and east
of I-35, including Metro Austin, Fiesta activities in San Antonio,
and the MS150 Bike race from La Grange to Austin. The main
threat time for these storms will be 2 pm to 8 pm. While no
severe weather is expected, these storms are likely to produce
more lightning than storms from the past few days.

Another 1 to 2 inches of rain will fall nearly everywhere from
this afternoon through 6 am Sunday. For the eastern Hill
Country and I-35 corridor, some locations will receive 3 to
4 inches of rain (see attached graphic). Flash flooding is
possible nearly anywhere, but most places will not have
problems. However, low water crossings are still an area
of high danger. Pending confirmation, we may have already
had a death due to driving on a flooded road. Please emphasize
to everyone that just because this is not a 1998 or 2002 event,
it doesn't mean it's not dangerous. We have some new flood
safety videos to view here courtesy of Pete Baldwin and
Travis County: http://www.srh.noaa.gov/ewx/?n=taddapr10.htm

River flooding is also occurring, and additional rainfall could make
the current expectations below change or become worse:

Devils River...Minor to Moderate Flooding though this evening.

Medina River at Bandera...Moderate Flooding...will fall below flood stage by this evening.

Upper Guadalupe River at Hunt...Minor Flooding, but will continue to fall
at Comfort...Above bankfull, but will continue to fall.

Frio River near Derby...Minor Flooding, will rise and and crest Sunday evening near flood stage.

Rio Grande...Above action stage and continuing to fall.

Lower Guadalupe River...Could rise this afternoon and Saturday from rainfall today. Not expected to reach flood stage.

San Antonio River...currently below flood stage and falling. Additional rainfall could cause rises into Saturday.

Only scattered showers and thunderstorms are expected during the
day on Sunday as we begin to dry out. Email Paul with rain/
flood reports and pictures, especially ones we can use for future flood
safety presentations. If you have urgent information, call our forecast
staff (numbers not given here since these emails are forwarded).

-Jon

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