Alert archive / Arizona / Flash Flood Warnings in 2007

Flash Flood Warning 22, NWS Tucson, AZ

July 28, 2007Cochise County, Pima County, Santa Cruz County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 28, 2007, 11:38 AM MST for Cochise County, Pima County, Santa Cruz County, Arizona. It was in force for 2 hr. 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 28, 2007, 11:38 AM MST (18:38 UTC)
Expired: Jul 28, 2007, 1:45 PM MST
In force: 2 hr
Issued by: NWS Tucson, AZ
Area: Counties, with a storm outline in the text
Flood severity: None

Counties Cochise County, AZ, Pima County, AZ, Santa Cruz County, AZ

The radar

The Tucson radar (KEMX), 30 km from the middle of the area, began a volume at 18:39 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 28, 12:05 PM MST	FLASH FLOOD	Sierra Vista, AZ	SEVERAL STREETS FLOODED ON WEST SIDE OF SIERRA VISTA...INCLUDING FRY BLVD. AND 7TH AVE.

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 12:00Z, 6.6 hours before the alert went out and 70 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: 1095 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 803 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: 15 m²/s²
0-3 km storm-relative helicity: 28 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 281843
FFWTWC
AZC003-019-023-282045-
/X.NEW.KTWC.FF.W.0022.070728T1838Z-070728T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
1138 AM MST SAT JUL 28 2007

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  FAR SOUTHEASTERN PIMA COUNTY IN SOUTH CENTRAL ARIZONA...
  SOUTHWESTERN COCHISE COUNTY IN SOUTHEAST ARIZONA...
  THIS INCLUDES THE CITY OF SIERRA VISTA...
  EASTERN SANTA CRUZ COUNTY IN SOUTHEAST ARIZONA...

* UNTIL 145 PM MST

* AT 1130 AM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SEVERAL STRONG THUNDERSTORMS GENERATING VERY HEAVY RAINFALL FROM
  NEAR KARTCHNER CAVERNS STATE PARK IN WEST CENTRAL COCHISE COUNTY
  EXTENDING SOUTHWARD TO NEAR SIERRA VISTA IN SOUTHWEST COCHISE
  COUNTY AS WELL AS WESTWARD TO NEAR ELGIN IN EASTERN SANTA CRUZ
  COUNTY. STORM MOVEMENT WAS TO THE SOUTH AT ABOUT 5 TO 10 MPH.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SIERRA
  VISTA...KARTCHNER CAVERNS STATE PART...ELGIN...WHETSTONE
  MOUNTAINS...HUACHUCA MOUNTAINS

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF WASHES 
AND STREAMS...ROADS...STREETS AND UNDERPASSES AS WELL AS OTHER 
DRAINAGE AREAS AND LOW LYING SPOTS.

LAT...LON 3168 11070 3135 11050 3135 11012 3199 11022
      3199 11046

$$

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, 6:27 PM MST	Flash Flood Warning	TWC	Pima	93 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, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.