Alert archive / Arizona / Flash Flood Warnings in 2007

Flash Flood Warning 4, NWS Tucson, AZ

July 19, 2007Cochise County, Pima County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 19, 2007, 6:15 PM MST for Cochise County, Pima County, Arizona. It was in force for 90 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: Jul 19, 2007, 6:15 PM MST (01:15 UTC)
Expired: Jul 19, 2007, 7:45 PM MST
In force: 90 min
Issued by: NWS Tucson, AZ
Area: Counties, with a storm outline in the text
Flood severity: None

Counties Cochise County, AZ, Pima County, AZ

The radar

The Tucson radar (KEMX), 23 km from the middle of the area, began a volume at 01:16 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

Time	Report	Where	Remark
Jul 19, 6:23 PM MST	FLASH FLOOD	Benson, AZ	MANY STREETS FLOODED IN BENSON.

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

The nearest sounding before it

Tuscon, AZ (KTUS), launched 00:00Z, 1.3 hours before the alert went out and 59 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: 742 J/kg
Mixed-layer CIN: -67 J/kg
Mixed-layer LCL: 3062 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: -52 m²/s²
0-3 km storm-relative helicity: 5 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS55 KTWC 200116
FFWTWC
AZC003-019-200245-
/X.NEW.KTWC.FF.W.0004.070720T0115Z-070720T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
615 PM MST THU JUL 19 2007

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EAST CENTRAL PIMA COUNTY IN SOUTH CENTRAL ARIZONA...
  WEST CENTRAL COCHISE COUNTY IN SOUTHEAST ARIZONA...

* UNTIL 745 PM MST

* AT 607 PM MST...TRAINED WEATHER SPOTTERS REPORTED UP TO TWO INCHES 
  OF RAINFALL FROM A STRONG THUNDERSTORM NEAR BENSON...OR ABOUT 29   
  MILES NORTH OF SIERRA VISTA...MOVING WEST AT 20 MPH.

* THE STORM PRODUCING FLASH FLOODING WILL OTHERWISE REMAIN OVER
  MAINLY RURAL AREAS OF THE INDICATED COUNTIES.

A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR THE WARNED AREA.
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

ADDITIONAL RAINFALL AMOUNTS OF UP TO ANOTHER INCH ARE POSSIBLE IN 
THE WARNED AREA.

LAT...LON 3176 11004 3211 11008 3206 11063 3193 11068
      3175 11080 3175 11042

$$

WEATHER.GOV/TUCSON

ELSLAGER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 19, 5:05 PM MST	Severe Thunderstorm Warning	TWC	Santa Cruz	55 min
Jul 19, 5:40 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Pima	65 min
Jul 19, 5:49 PM MST	Areal Flood Advisory	TWC	Santa Cruz	86 min
Jul 19, 5:56 PM MST	Severe Thunderstorm Warning	TWC	Santa Cruz	64 min
Jul 19, 6:02 PM MST	Areal Flood Advisory	TWC	Cochise	20 min
Jul 19, 6:37 PM MST	Severe Thunderstorm Warning	TWC	Pima	53 min
Jul 19, 7:10 PM MST	Areal Flood Advisory	TWC	Pima, Santa Cruz	95 min
Jul 19, 7:12 PM MST	Severe Thunderstorm Warning	TWC	Pima	63 min
Jul 19, 7:40 PM MST	Dust Storm Warning	TWC		2 hr
Jul 19, 7:51 PM MST	Areal Flood Advisory	TWC	Pima	84 min
Jul 19, 7:59 PM MST	Severe Thunderstorm Warning	TWC	Pima	61 min
Jul 19, 8:08 PM MST	Severe Thunderstorm Warning	TWC	Pima	37 min
Jul 19, 8:24 PM MST	Areal Flood Advisory	TWC	Pima	96 min
Jul 19, 9:10 PM MST	Areal Flood Advisory	TWC	Pima	95 min
Jul 19, 9:52 PM MST	Areal Flood Advisory	TWC	Pima	113 min
Jul 20, 12:53 AM MST	Areal Flood Advisory	TWC	Pima	67 min

Nearby

Flash Flood Warnings in Arizona, 2007 Every flash flood warning in 2007

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.