Flash Flood Warning 5, NWS Sacramento, CA

467 
WGUS76 KSTO 032338
FFSSTO

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SACRAMENTO CA
438 PM PDT SUN AUG 3 2014

CAC109-032324-
/O.CAN.KSTO.FF.W.0005.000000T0000Z-140804T0545Z/
/00000.2.DM.000000T0000Z.000000T0000Z.000000T0000Z.OO/
TUOLUMNE CA-
438 PM PDT SUN AUG 3 2014

...THE FLASH FLOOD WARNING FOR A DAM FAILURE HAS BEEN CANCELLED FOR
WEST CENTRAL TUOLUMNE COUNTY...

WATER OFFICIALS ON SITE DO NOT BELIEVE THERE IS AN IMMINENT THREAT 
OF FAILURE OF TWAIN HARTE DAM. THEREFORE...IN COORDINATION WITH 
LOCAL TUOLUMNE COUNTY OFFICIALS THE NATIONAL WEATHER SERVICE HAS 
CANCELLED THE FLASH FLOOD WARNING.

AS A PRECAUTIONARY MEASURE, WATER IS BEING RELEASED INTO TWAIN HARTE 
CREEK. THIS WILL CAUSE ELEVATED FLOWS IN TWAIN HARTE AND SULLIVAN 
CREEKS OVER THE NEXT FEW DAYS. THIS TYPE OF FLOW WILL BE ABOVE 
NORMAL SUMMER BUT BELOW WINTER LEVELS AND NO FLOODING IS EXPECTED. 

LAT...LON 3802 12026 3803 12025 3803 12024 3802 12024
      3801 12026

$$

CS

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SACRAMENTO CA
1016 AM PDT Sun Aug 3 2014

.Synopsis...
Cooling trend through Tuesday then near average highs the
remainder of the week. A return of Sierra showers and thunderstorms
starting this afternoon. More widespread and wet mountain showers
and thunderstorms Monday and Tuesday, with a slight chance of
showers and thunderstorms for the valley and foothill areas. Some
showers and thunderstorms may linger near the crest Wednesday
through Friday.

&&

Discussion...
Mostly cloudy skies with a decent delta breeze has brought cooler
air into the interior this morning. Clouds will continue to move
northward over the region today keeping most locations mostly
cloudy. Showers with isolated thunderstorms will be possible later
today for the western slopes...mainly south of US 50. A better
push of showers will occur overnight into Monday for that area
with slight chances some of the activity could move further
northward.

When the low moves northward it will be likely that some showers
with possible thunderstorms will spread into the valley. Monday
night into Tuesday showers will likely spread over the wildfires
in Shasta Co. to bring some needed help from mother nature. The
initial cloud shield should prevent any strong thunderstorms from
developing but as the low moves northward on Tuesday then drops
southward for Wednesday things could change. Mountains could end
up getting some decent rainfall for this time of year.
&&

.Extended Discussion (Thursday through Sunday)

Anomalously moist conditions will remain over the region through
at least Wednesday and Thursday of next week. Dynamics won't be
quite as favorable for convection as earlier on in the week, but
with a weak trough pattern over California, a slight threat of
thunderstorms will persist over the mountains. By late next week,
southwest flow aloft will begin to increase, which would likely
push monsoonal moisture east of the Sierra crest.

Temperatures are expected to remain within a few degrees of normal
through the extended period.

Dang

&&

.Aviation...

VFR conds acrs int NorCal the nxt 24 hrs with Sly flow aloft. Lcl
MVFR vsbys vcnty wildfires in ern Shasta Co. Winds will remain blo
15 kts across TAF sites exc SW 15-25 kts nr the Delta. Sct shra/
isold tsra dvlpg acrs the nrn Siernev aft 00Z Mon.

&&

.STO Watches/Warnings/Advisories...
fire weather watch from monday morning through monday evening
burney basin / eastern shasta county...shasta lake area /
northern shasta county...west slope northern sierra nevada...
western plumas county/lassen park.

&&