Flash Flood Warning 38, NWS Tucson, AZ

344 
WGUS75 KTWC 241953
FFSTWC

Flash Flood Statement
National Weather Service Tucson AZ
1253 PM MST Tue Sep 24 2019

AZC019-023-242100-
/O.CON.KTWC.FF.W.0038.000000T0000Z-190924T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Pima-Santa Cruz-
1253 PM MST Tue Sep 24 2019

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 200 PM MST FOR
EAST CENTRAL PIMA AND NORTHEASTERN SANTA CRUZ COUNTIES...

At 1247 PM MST, Doppler radar continued to indicate showers 
producing light to moderate rainfall across the warned area. 
Automated gauges from this area indicate that between one and three 
inches of rainfall has occurred in the last 3-6 hours, so expect 
runoff and flooded roadways. Flash flooding will continue through 2 
pm mst.

Some locations that will experience flooding include...
Vail, East Sahuarita, Patagonia, Sonoita, Elgin, Corona De Tucson,
Saguaro National Park East, Rita Ranch and Canelo.

This includes the following highways...
 Interstate 10 between mile markers 274 and 295.
 Route 82 between mile markers 19 and 44.
 Route 83 between mile markers 13 and 58.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.

&&

LAT...LON 3214 11045 3153 11047 3153 11084 3191 11090
      3215 11075

$$
Zell

662 
WGUS75 KTWC 242103
FFSTWC

Flash Flood Statement
National Weather Service Tucson AZ
203 PM MST Tue Sep 24 2019

AZC019-023-242110-
/O.EXP.KTWC.FF.W.0038.000000T0000Z-190924T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Pima-Santa Cruz-
203 PM MST Tue Sep 24 2019

...THE FLASH FLOOD WARNING FOR EAST CENTRAL PIMA AND NORTHEASTERN
SANTA CRUZ COUNTIES HAS EXPIRED...

The heavy rain has ended. However, runoff will continue for the next 
one to two hours. Problems may still be encountered in low spots, 
dips and where washes cross the roadway, but flash flooding is no 
longer expected. Please continue to heed any remaining road closures.

LAT...LON 3214 11045 3153 11047 3153 11084 3191 11090
      3215 11075

$$
Zell

Area Forecast Discussion
National Weather Service Tucson AZ
916 AM MST Tue Sep 24 2019

.SYNOPSIS...A weather system interacting with deep moisture over the
area will continue to produce showers and thunderstorms today. Some
of these thunderstorms will be capable of producing locally heavy
rainfall, strong winds, and hail. The weather system will remain
over southwestern Arizona through at least Thursday before tracking
northward and exiting the state on Friday. The proximity of this
system will keep scattered showers and thunderstorms in the forecast
with improving weather area-wide anticipated on Friday. Drier
weather will return this weekend into next week.

&&

.DISCUSSION...Widespread rain event continues across most of
southern Arizona. Storms have been training resulting in flash
flooding. Flash flood watch remains in effect for eastern half of
the area into this evening. Severe thunderstorms, some briefly
spinning up a tornado, are possible over the western half of Pima
county where there is more sunshine and heating and this area is
closer to the upper low. This upper low was located between Yuma
and Rocky Point. Made some changes to the forecast, especially to
the high temperatures today for areas where it raining.

Activity quieting down tonight before ramping back up tomorrow
morning. More on this in the afternoon discussion.

&&

.AVIATION...Valid through 25/12Z.
Isolated to scattered TSRA/SHRA becoming more widespread through
early morning hours and continuing through this evening. Some storms
could be strong to severe with hail and strong wind gusts. Ceilings
will generally be SCT-BKN 4k-8k ft MSL with MVFR and even occasional
IFR ceilings in and around thunderstorms. SFC wind generally less
than 10 kts this morning becoming easterly at KTUS 8-12 kts this
afternoon and evening. Winds at KOLS and KDUG will be out of the
southwest to northwest at 8-12 kts this afternoon and evening. Wind
gusts to 40+ kts near TSRA and with any thunderstorm outflow
boundaries. Aviation discussion not updated for TAF amendments.

&&

.FIRE WEATHER...Isolated to scattered showers and thunderstorms
becoming widespread this morning into the afternoon ahead of a low
pressure system. Locally heavy rainfall and strong thunderstorm
outflows will be possible. Scattered showers and thunderstorms will
then continue Wednesday into Thursday with just isolated activity
Friday. Dry conditions are then expected this weekend into early
next week. 20-foot winds will be terrain driven and less than 15
mph, except in the vicinity of thunderstorms where strong, gusty and
erratic winds will be possible.

&&

&&

.TWC WATCHES/WARNINGS/ADVISORIES...
 Flash Flood Watch until 8 PM MST this evening for AZZ503-504-
  506>508-511>514.

 Flash Flood Watch until 11 AM MST this morning for AZZ502-505-
  509-515.

&&

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Special Weather Statement
National Weather Service Tucson AZ
852 AM MST Tue Sep 24 2019

AZZ502-241630-
Tohono O'odham Nation including Sells-
852 AM MST Tue Sep 24 2019

...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL PIMA COUNTY UNTIL
930 AM MST...

At 852 AM MST, Doppler radar was tracking a strong thunderstorm near
Topawa, or 11 miles south of Sells, moving north at 15 mph.

Nickel size hail and wind gusts up to 50 mph will be possible with
this storm.

Locations impacted include...
Sells, Topawa, Vamori, Cowlic, Artesia, Itak and Ali Molina.

LAT...LON 3160 11190 3164 11202 3191 11198 3190 11173
TIME...MOT...LOC 1552Z 196DEG 15KT 3175 11190

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TUCSON AZ
1100 AM MST TUE SEP 24 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1040 AM     FLASH FLOOD      19 SE TUCSON            31.97N 110.70W
09/24/2019                   PIMA               AZ   TRAINED SPOTTER

            ROADS IMPASSABLE IN AREA PER SPOTTER. CALLE
            RINCANADO AND WENTWORTH FLOODED AND
            IMPASSABLE.

&&

MP