Alert archive / Arizona / Flash Flood Warnings in 2016

Flash Flood Warning 23, NWS Tucson, AZ

August 9, 2016Pima County, Santa Cruz County, Arizona

NWS Tucson, AZ issued this flash flood warning at Aug 9, 2016, 7:46 AM MST for Pima County, Santa Cruz County, Arizona. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 9, 2016, 7:46 AM MST (14:46 UTC)
Expired
Aug 9, 2016, 1:15 PM MST
In force
5 hr
Issued by
NWS Tucson, AZ
Area
Storm-based polygon
Flood severity
None

Counties Pima County, AZ, Santa Cruz County, AZ

The radar

The Tucson radar (KEMX), 64 km from the middle of the area, began a volume at 14:48 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Tuscon, AZ (KDMA), launched 12:00Z, 2.8 hours before the alert went out and 76 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Tuscon, AZ at 12:00Z on 2016-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1435 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tuscon, AZ at 12:00Z on 2016-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 7 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1435 J/kg
Mixed-layer CIN
-60 J/kg
Mixed-layer LCL
1478 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
7 m²/s²
0-3 km storm-relative helicity
6 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

151 
WGUS55 KTWC 091446
FFWTWC
AZC019-023-091745-
/O.NEW.KTWC.FF.W.0023.160809T1446Z-160809T1745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
746 AM MST TUE AUG 9 2016

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL SANTA CRUZ COUNTY IN SOUTHEASTERN ARIZONA...
  SOUTHEASTERN PIMA COUNTY IN SOUTHEASTERN ARIZONA...

* UNTIL 1045 AM MST

* AT 741 AM MST...DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED
  HEAVY RAIN FELL IN PARTS OF SANTA CRUZ COUNTY AND CONTINUED IN FAR
  SOUTHEAST PIMA COUNTY.  RAIN GAUGES AT PORTRERO CANYON AND PECK 
  CANYON WEST OF INTERSTATE 19 HAVE REGISTERED BETWEEN 1 AND 2
  INCHES OF RAIN IN THE PAST HOUR AND 2.5 TO 3.5 INCHES OF RAIN IN
  THE PAST 3 HOURS.  FLASH FLOODING IS LIKELY IN THESE WATERSHEDS.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  RIO RICO...TUMACACORI-CARMEN AND PENA BLANCA LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 3144 11139 3168 11139 3192 11096 3134 11069
      3133 11108

$$

KD
3 follow-up statements
294 
WGUS75 KTWC 091547
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
847 AM MST TUE AUG 9 2016

AZC019-023-091745-
/O.CON.KTWC.FF.W.0023.000000T0000Z-160809T1745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SANTA CRUZ-PIMA-
847 AM MST TUE AUG 9 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1045 AM MST FOR
CENTRAL SANTA CRUZ AND SOUTHEASTERN PIMA COUNTIES...

AT 845 AM MST...DOPPLER RADAR INDICATED THAT THE HEAVIEST RAIN HAD
ENDED IN SANTA CRUZ COUNTY. HOWEVER...PECK CANYON WAS FLOWING OVER
ROADWAYS NEAR RIO RICO HIGH SCHOOL. RUNOFF FROM HEAVY RAIN THAT FELL
EARLIER THIS MORNING WILL CONTINUE THIS MORNING.

NORMALLY DRY WASHES AND LOW WATER CROSSINGS MAY BE INUNDATED IN THE
FOLLOWING LOCATIONS... NOGALES...GREEN VALLEY...SAHUARITA...RIO RICO
NORTHEAST... TUMACACORI-CARMEN...RIO RICO SOUTHEAST...RIO RICO
NORTHWEST...RIO RICO SOUTHWEST...TUBAC...PATAGONIA LAKE...KINO
SPRINGS...TUMACACORI...RUBY... MADERA CANYON...PENA BLANCA
LAKE...RIO RICO...ARIVACA...ARIVACA LAKE... AMADO AND ARIVACA
JUNCTION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 3144 11139 3168 11139 3192 11096 3134 11069
      3133 11108

$$

KD
687 
WGUS55 KTWC 091736
FFWTWC
AZC019-023-092015-
/O.EXT.KTWC.FF.W.0023.000000T0000Z-160809T2015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
1036 AM MST TUE AUG 9 2016

THE NATIONAL WEATHER SERVICE IN TUCSON HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  CENTRAL SANTA CRUZ COUNTY IN SOUTHEASTERN ARIZONA...
  SOUTHEASTERN PIMA COUNTY IN SOUTHEASTERN ARIZONA...

* UNTIL 115 PM MST

* AT 1031 AM MST...STRONG FLOWS CONTINUE IN PECK CANYON AND SONOITA
  CREEK IN SANTA CRUZ COUNTY. SONOITA CREEK NEAR PATAGONIA HAS
  CRESTED BUT FLOODING WEST OF PATAGONIA LAKE IS LIKELY. WHILE THE
  HEAVY RAIN HAS ENDED...RUNOFF WILL CAUSE OVERTOPPING OF ROADS BY
  THESE STREAMS WILL CONTINUE INTO EARLY AFTERNOON. FLOODING OF
  STRUCTURES IN FAVORED LOW LYING AREAS NEAR THESE STREAMS COULD
  ALSO OCCUR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

&&

LAT...LON 3144 11139 3168 11139 3192 11096 3134 11069
      3133 11108

$$

KD
438 
WGUS75 KTWC 092014
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
114 PM MST TUE AUG 9 2016

AZC019-023-092022-
/O.EXP.KTWC.FF.W.0023.000000T0000Z-160809T2015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SANTA CRUZ-PIMA-
114 PM MST TUE AUG 9 2016

...THE FLASH FLOOD WARNING FOR CENTRAL SANTA CRUZ AND SOUTHEASTERN
PIMA COUNTIES WILL EXPIRE AT 115 PM MST...

THE HEAVY RAIN HAS ENDED AND THE FLASH FLOOD WARNING WILL BE ALLOWED
TO EXPIRED. HOWEVER, A FLOOD WARNING HAS BEEN POSTED FOR SONOITA
CREEK FROM PATAGONIA LAKE DOWNSTREAM TO PENDLETON DRIVE NEAR RIO
RICO. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.

LAT...LON 3144 11139 3168 11139 3192 11096 3134 11069
      3133 11108

$$

KD

The office that day

Everything else NWS Tucson, AZ issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 9, 5:18 AM MSTAreal Flood AdvisoryTWCCochise, Santa Cruz3 hr
Aug 9, 5:37 AM MSTFlash Flood WarningTWCCochise, Santa Cruz113 min
Aug 9, 6:45 AM MSTAreal Flood AdvisoryTWCPima, Santa Cruz3 hr
Aug 9, 6:45 AM MSTFlash Flood WarningTWCPima, Santa Cruz2 hr
Aug 9, 8:13 AM MSTAreal Flood AdvisoryTWCCochise, Santa Cruz2 hr
Aug 9, 8:30 AM MSTAreal Flood AdvisoryTWCPima, Pinal4 hr
Aug 9, 9:08 AM MSTFlash Flood WarningTWCPima3 hr
Aug 9, 11:50 AM MSTAreal Flood AdvisoryTWCPima, Pinal115 min
Aug 9, 1:10 PM MSTAreal Flood WarningTWCSanta Cruz3 hr
Aug 9, 4:23 PM MSTAreal Flood AdvisoryTWCCochise112 min

Nearby

Flash Flood Warnings in Arizona, 2016Every flash flood warning in 2016

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.