Flash Flood Warning 5, NWS Reno, NV

625 
WGUS75 KREV 260152
FFSREV

Flash Flood Statement
National Weather Service Reno NV
652 PM PDT Thu Jul 25 2019

CAC003-NVC005-260159-
/O.CAN.KREV.FF.W.0005.000000T0000Z-190726T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Alpine CA-Douglas NV-
652 PM PDT Thu Jul 25 2019

...THE FLASH FLOOD WARNING FOR ALPINE AND DOUGLAS COUNTIES IS
CANCELLED...

The heavy rain has ended this evening as thunderstorms have moved 
out of the region. Flooding is no longer expected to pose a threat. 

LAT...LON 3897 11987 3896 11982 3893 11980 3886 11979
      3885 11988 3886 11989 3891 11988 3895 11992

$$

EL

Area Forecast Discussion
National Weather Service Reno NV
100 PM PDT Thu Jul 25 2019

.SYNOPSIS...

Showers and thunderstorms will spread north this evening and
Friday with cloud to ground lightning, localized heavy rainfall,
gusty winds, and small hail. Drier conditions will return this
weekend and early next week as high pressure expands across the
region. High temperatures will likely reach or exceed 100 degrees
for lower valleys with mid to upper 80s in the Sierra valleys by
Sunday. Temperatures return to near normal next week.

&&

.DISCUSSION...

Thunderstorms are beginning to fire early this afternoon across
Mono and western Mineral Counties. More buildups are visible
running up the Sierra Front to west of Reno and Stead. As the
afternoon progresses, we expect to see more storms fire and
move/propagate northward into the evening. The best chances
remain over Mono/Mineral, with a few storms north to I-80. Slower
storm movements could result in localized flash flooding, in
addition to typical gusty wind/small hail/lightning threats.

Otherwise, the forecast has not changed much overall from
yesterday. Showers and isolated thunderstorms remain possible
overnight into tomorrow morning as a weak upper level wave moves
through. The best potential for storms continues to be tomorrow,
especially along the 395 corridor eastward. West winds aloft with
high moisture values (precip. water near 1 inch) look to have
storms initiate along the leading edge of the zephyr. The high
res ensemble is in good agreement with this idea.

More west flow, along with the ridge building just to our south
over the weekend will dry things out and stabilize the air mass.
We should still have a few buildups, but thunderstorms are
unlikely with chances less than 10%.

The bigger story will be the heat, but the latest model and
ensemble trends are not quite as hot as they have been. It will
still be near the century mark in Western NV, with 85-90 degree
readings in the Sierra valleys. Overnight lows will be above
average, from the upper 40s Sierra valleys to the 60s in the
warmer lower valleys. At this time, I would put the chances of
KRNO seeing its first 100 degree reading this summer around 65%.

The ridge is expected to weaken early next week with dry southwest
flow returning. By the middle of the week, average summertime
heat with seasonably cool overnight lows returns along with the
typical afternoon/evening gusty winds. X

&&

.AVIATION...

Thunderstorm threat is the main concern today with KMMH having the
highest probability of seeing thunderstorms. A better threat
tomorrow afternoon and evening as more moisture moves in, and
expect the afternoon zephyr to act as a focusing mechanism. This
will put thunderstorm initiation near the Sierra Front terminals
Main threats are gusty winds 40-45 kts and small hail. Chances for
thunderstorms within 5 miles of a terminal listed below:

KMMH: 50% today and Friday
KTVL: 10% today and Friday
KTRK: 10% today, 5% Friday
KMEV/KCXP: 20% today, 25% Friday
KRNO: 15% today, 20% Friday

Drier weather returns for the weekend with thunderstorm threats
below 10% for all terminals along with light afternoon winds. A
return to southwest flow is expected next week with typical
afternoon west to southwest winds gusting to 20-25 kts. X

&&

.REV Watches/Warnings/Advisories...
NV...None.
CA...None.

&&

For more information from the National Weather Service visit...
http://weather.gov/reno

Special Weather Statement
National Weather Service Reno NV
320 PM PDT Thu Jul 25 2019

CAZ072-073-NVZ001>003-252300-
Greater Lake Tahoe Area CA-Mono CA-Greater Lake Tahoe Area NV-
Greater Reno-Carson City-Minden Area NV-
Mineral and Southern Lyon Counties NV-
320 PM PDT Thu Jul 25 2019

...Thunderstorms Continue Through Early Evening...

Doppler radar continues to track thunderstorms south of Hwy 50
through the Sierra into Mineral County. Heavy rain, dime size hail
and winds in excess of 40 mph will be possible with these storms.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy rainfall is also occurring with these storms. Expect ponding
of water on roadways. In areas of steep terrain, debris/rock slides
are possible. Drivers should slow down and turn on their headlights
if encountering heavy rains.

&&

LAT...LON 3758 11901 3774 11913 3773 11925 3788 11920
      3795 11932 3804 11931 3820 11963 3845 11968
      3869 11998 3881 12003 3885 12016 3908 12021
      3887 11814 3847 11770 3790 11834 3789 11842
      3747 11783 3746 11878
TIME...MOT...LOC 2210Z 240DEG 0KT 3854 11920

EL