Alert archive / Arizona / Flash Flood Warnings in 2016

Flash Flood Warning 21, NWS Tucson, AZ

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

NWS Tucson, AZ issued this flash flood warning at Aug 9, 2016, 5:37 AM MST for Cochise County, Santa Cruz County, Arizona. It was in force for 113 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 9, 2016, 5:37 AM MST (12:37 UTC)
Expired
Aug 9, 2016, 7:30 AM MST
In force
113 min
Issued by
NWS Tucson, AZ
Area
Storm-based polygon
Flood severity
None

Counties Cochise County, AZ, Santa Cruz County, AZ

The radar

The Tucson radar (KEMX), 58 km from the middle of the area, began a volume at 12:37 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.

What was reported inside it

TimeReportWhereRemark
Aug 9, 6:32 AM MSTFLASH FLOOD1 N Hereford, AZMILLER CREEK OVERFLOWING MOSON RD 2-3 INCHES DEEP

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Tuscon, AZ (KDMA), launched 12:00Z, 0.6 hours before the alert went out and 98 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.

021 
WGUS55 KTWC 091237
FFWTWC
AZC003-023-091430-
/O.NEW.KTWC.FF.W.0021.160809T1237Z-160809T1430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHWESTERN COCHISE COUNTY IN SOUTHEASTERN ARIZONA...
  SOUTHEASTERN SANTA CRUZ COUNTY IN SOUTHEASTERN ARIZONA...

* UNTIL 730 AM MST

* AT 533 AM MST...DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED
  THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS EASTERN PARTS OF SANTA
  CRUZ COUNTY AND EXTREME SOUTHWESTERN COCHISE COUNTY. A TRAINED
  WEATHER SPOTTER REPORTED OVER 1.25 INCHES IN A HALF HOUR. IN
  ADDITION...RADAR RAINFALL ESTIMATES INDICATE AMOUNTS OF NEARLY TWO
  INCHES IN SOME LOCATIONS. FLASH FLOODING IS EXPECTED TO BEGIN
  SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  SIERRA VISTA SOUTHEAST...CANELO...NICKSVILLE...PALOMINAS...
  RAMSEY CANYON PRESERVE...JUNCTION OF HIGHWAYS 80 AND 90...
  HEREFORD...PARKER CANYON LAKE...
  NACO AND CORONADO NATIONAL MEMORIAL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...FARMLAND...AND OTHER LOW LYING
SPOTS.

&&

LAT...LON 3154 11001 3134 10994 3134 11071 3158 11073

$$

MOLLERE
2 follow-up statements
640 
WGUS75 KTWC 091309
FFSTWC

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

AZC003-023-091430-
/O.CON.KTWC.FF.W.0021.000000T0000Z-160809T1430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE-SANTA CRUZ-
609 AM MST TUE AUG 9 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 730 AM MST FOR
SOUTHWESTERN COCHISE AND SOUTHEASTERN SANTA CRUZ COUNTIES...

AT 557 AM MST...DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED
THUNDERSTORMS PRODUCING HEAVY RAIN CONTINUE ACROSS A LARGE PART OF
EASTERN SANTA CRUZ COUNTY AND INTO SOUTHWESTERN COCHISE COUNTY.
SEVERAL TRAINED WEATHER SPOTTERS HAVE REPORTED RAINFALL AMOUNTS OF
OVER ONE INCH IN ABOUT A HALF HOUR. IN ADDITION, NUMEROUS AUTOMATED
RAIN GAUGES, ESPECIALLY IN THE SIERRA VISTA AND HEREFORD AREA HAVE
REPORTED AMOUNTS RANGING FROM AROUND A HALF INCH TO NEARLY TWO
INCHES. AS A RESULT...FLASH FLOODING IS EXPECTED TO BEGIN
SHORTLY...IF IT HAS NOT ALREADY DONE SO.

AREAS THAT MAY BE AFFECTED INCLUDE...BUT ARE NOT LIMITED TO, MILLER-
CARR CANYON...HUNTER CANYON...ASH CANYON...RAMSEY CANYON, NOT TO
MENTION PARTS OF THE CITIES OF SIERRA VISTA AND HEREFORD AS WELL.
HEAVY RAIN IS ALSO OCCURRING OVER PARKER CANYON LAKE. 

NORMALLY DRY WASHES AND LOW WATER CROSSINGS MAY BE INUNDATED IN THE
FOLLOWING LOCATIONS... SIERRA VISTA...SIERRA VISTA
SOUTHEAST...CANELO...NICKSVILLE...PALOMINAS... RAMSEY CANYON
PRESERVE...JUNCTION OF HIGHWAYS 80 AND 90...HEREFORD... PARKER
CANYON LAKE...NACO AND CORONADO NATIONAL MEMORIAL.

MOTORISTS ARE ADVISED TO DRIVE WITH EXTREME CAUTION THIS MORNING AS
ROADWAYS MAY BE AFFECTED BY THE HEAVY RAIN...WITH DIPS IN THE
ROADWAY BECOMING IMPASSABLE DUE TO RAPIDLY FLOWING WATER. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

&&

LAT...LON 3154 11001 3134 10994 3134 11071 3158 11073

$$

MOLLERE
007 
WGUS75 KTWC 091428
FFSTWC

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

AZC003-023-091434-
/O.EXP.KTWC.FF.W.0021.000000T0000Z-160809T1430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE-SANTA CRUZ-
728 AM MST TUE AUG 9 2016

...THE FLASH FLOOD WARNING FOR SOUTHWESTERN COCHISE AND SOUTHEASTERN
SANTA CRUZ COUNTIES WILL EXPIRE AT 730 AM MST...

THE HEAVY RAIN HAS ENDED FOR NOW IN SOUTHWEST COCHISE COUNTY AND
MUCH OF SOUTHEAST SANTA CRUZ COUNTY. HOWEVER...SOME MINOR FLOODING
AND ELEVATED FLOWS IN WASHES IS EXPECTED TO CONTINUE FROM THE HEAVY
RAIN THAT OCCURRED EARLIER THIS MORNING. A FLOOD ADVISORY REMAINS IN
EFFECT FOR THESE AREAS UNTIL 815 AM MST.

IN ADDITION...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 845 AM
MST FOR NORTHEAST SANTA CRUZ COUNTY.

LAT...LON 3154 11001 3134 10994 3134 11071 3158 11073

$$

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, 6:45 AM MSTAreal Flood AdvisoryTWCPima, Santa Cruz3 hr
Aug 9, 6:45 AM MSTFlash Flood WarningTWCPima, Santa Cruz2 hr
Aug 9, 7:46 AM MSTFlash Flood WarningTWCPima, Santa Cruz5 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.