Alert archive / Arizona / Flash Flood Warnings in 2007

Flash Flood Warning 21, NWS Tucson, AZ

July 27, 2007Pima County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 27, 2007, 6:27 PM MST for Pima County, Arizona. It was in force for 93 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 27, 2007, 6:27 PM MST (01:27 UTC)
Expired: Jul 27, 2007, 8:00 PM MST
In force: 93 min
Issued by: NWS Tucson, AZ
Area: Counties, with a storm outline in the text
Flood severity: None

County Pima County, AZ

The radar

The Tucson radar (KEMX), 47 km from the middle of the area, began a volume at 01:29 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 (KTUS), launched 00:00Z, 1.5 hours before the alert went out and 7 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: 1212 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 1755 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: -41 m²/s²
0-3 km storm-relative helicity: -39 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WGUS55 KTWC 280127
FFWTWC
AZC019-280300-
/X.NEW.KTWC.FF.W.0021.070728T0127Z-070728T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
627 PM MST FRI JUL 27 2007

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EAST CENTRAL PIMA COUNTY IN SOUTH CENTRAL ARIZONA...
  THIS INCLUDES THE CITY OF TUCSON...

* UNTIL 800 PM MST

AT 618 PM MST...WEATHER RADAR INDIACETD A THUNDERTSORM WITH VERY 
HEAVY RAINFALL OVER THE WESTERN PORTIONS OF THE TUCSON METRO AREA. 
WEATHER RADAR ESTIMATES THAT UP TO AN INCH HAS FALLEN IN THE PAST 20 
MINUTES. THIS STORM WAS MOVING SOUTHEAST AT 5 MPH.

LAT...LON 3233 11091 3223 11109 3207 11092 3220 11078

$$

WEATHER.GOV/TUCSON

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 27, 5:33 PM MST	Flash Flood Warning	TWC	Cochise	87 min
Jul 27, 6:28 PM MST	Severe Thunderstorm Warning	TWC	Pima	47 min
Jul 27, 6:57 PM MST	Areal Flood Advisory	TWC	Cochise	63 min
Jul 27, 7:51 PM MST	Areal Flood Advisory	TWC	Cochise, Graham, Greenlee	4 hr
Jul 28, 10:07 AM MST	Areal Flood Advisory	TWC	Cochise, Santa Cruz	3 hr
Jul 28, 11:14 AM MST	Flash Flood Watch	TWC		10 hr
Jul 28, 11:38 AM MST	Flash Flood Warning	TWC	Cochise, Pima, Santa Cruz	2 hr
Jul 28, 12:44 PM MST	Severe Thunderstorm Warning	TWC	Pima	46 min
Jul 28, 12:50 PM MST	Flash Flood Warning	TWC	Pima	5 hr
Jul 28, 1:27 PM MST	Severe Thunderstorm Warning	TWC	Pima	46 min
Jul 28, 2:28 PM MST	Flash Flood Warning	TWC	Pima, Pinal	2 hr
Jul 28, 4:09 PM MST	Areal Flood Advisory	TWC	Pima, Pinal	3 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.