Alert archive / Arizona / Flash Flood Warnings in 2016

Flash Flood Warning 7, NWS Tucson, AZ

July 29, 2016Pima County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 29, 2016, 6:07 PM MST for Pima County, Arizona. It was in force for 113 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 29, 2016, 6:07 PM MST (01:07 UTC)
Expired: Jul 29, 2016, 8:00 PM MST
In force: 113 min
Issued by: NWS Tucson, AZ
Area: Storm-based polygon
Flood severity: None

County Pima County, AZ

The radar

The Tucson radar (KEMX), 132 km from the middle of the area, began a volume at 01:07 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 00:00Z, 1.1 hours before the alert went out and 106 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 933 J/kg
Mixed-layer CIN: -53 J/kg
Mixed-layer LCL: 3118 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 6 m²/s²
0-3 km storm-relative helicity: 55 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

078 
WGUS55 KTWC 300107
FFWTWC
AZC019-300300-
/O.NEW.KTWC.FF.W.0007.160730T0107Z-160730T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
607 PM MST FRI JUL 29 2016

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

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

* UNTIL 800 PM MST

* AT 603 PM MST...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  PRODUCING VERY HEAVY RAIN ACROSS CENTRAL PIMA COUNTY INCLUDING THE
  CENTRAL TOHONO OODHAM NATION...ESPECIALLY TO THE NORTHWEST OF
  SELLS. 

RADAR ESTIMATES THAT BETWEEN 1.50 AND 2.00 INCHES OF RAIN HAS FALLEN
IN THIS AREA THAT WILL RESULT IN FLASH FLOODING...ESPECIALLY IN
PAN...SAN LUIS AND SIKUL HIMATK WASHES.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  SELLS...NOLIC AND BIG FIELDS. 

LAT...LON 3215 11195 3190 11190 3192 11215 3214 11212

$$

1 follow-up statement

796 
WGUS75 KTWC 300252
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
752 PM MST FRI JUL 29 2016

AZC019-300300-
/O.EXP.KTWC.FF.W.0007.000000T0000Z-160730T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PIMA-
752 PM MST FRI JUL 29 2016

...THE FLASH FLOOD WARNING FOR CENTRAL PIMA COUNTY WILL EXPIRE AT 800
PM MST...

THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A
THREAT OF FLASH FLOODING. HOWEVER...HEAVY RAINFALL FROM EARLIER MAY
CONTINUE TO RESUT IN MINOR FLOODING IN QUIJOTOA WASH NEAR HIGHWAY 86
AND ROUTE 15.

LAT...LON 3215 11195 3190 11190 3192 11215 3214 11212

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 29, 5:07 PM MST	Severe Thunderstorm Warning	TWC	Pima	53 min
Jul 29, 5:16 PM MST	Severe Thunderstorm Warning	TWC	Pima	59 min
Jul 29, 5:22 PM MST	Special Weather Statement	TWC	Pima	53 min
Jul 29, 5:32 PM MST	Areal Flood Advisory	TWC	Pima, Pinal	118 min
Jul 29, 5:43 PM MST	Severe Thunderstorm Warning	TWC	Pima	62 min
Jul 29, 5:59 PM MST	Severe Thunderstorm Warning	TWC	Pima	46 min
Jul 29, 6:01 PM MST	Severe Thunderstorm Warning	TWC	Pima	74 min
Jul 29, 6:13 PM MST	Special Weather Statement	TWC	Pinal	77 min
Jul 29, 6:35 PM MST	Dust Storm Warning	TWC	Pima, Pinal	4 hr
Jul 29, 7:05 PM MST	Special Weather Statement	TWC	Pima	70 min
Jul 29, 7:46 PM MST	Areal Flood Advisory	TWC	Pima, Pinal	119 min
Jul 29, 8:19 PM MST	Special Weather Statement	TWC	Pima	71 min
Jul 29, 10:15 PM MST	Severe Thunderstorm Warning	TWC	Pima	60 min
Jul 30, 12:02 AM MST	Special Weather Statement	TWC		28 min
Jul 30, 3:10 PM MST	Special Weather Statement	TWC	Santa Cruz	35 min
Jul 30, 4:41 PM MST	Special Weather Statement	TWC	Santa Cruz	49 min
Jul 30, 4:54 PM MST	Special Weather Statement	TWC	Cochise	51 min
Jul 30, 4:56 PM MST	Areal Flood Advisory	TWC	Cochise	2 hr

Nearby

Flash Flood Warnings in Arizona, 2016 Every 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.