Alert archive / Arizona / Flash Flood Warnings in 2007

Flash Flood Warning 64, NWS Tucson, AZ

July 28, 2007Pima County, Pinal County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 28, 2007, 2:28 PM MST for Pima County, Pinal County, Arizona. It was in force for 2 hr. 4 reports 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, 2:28 PM MST (21:28 UTC)
Expired
Jul 28, 2007, 4:45 PM MST
In force
2 hr
Issued by
NWS Tucson, AZ
Area
Counties, with a storm outline in the text
Flood severity
None

Counties Pima County, AZ, Pinal County, AZ

The radar

The Tucson radar (KEMX), 46 km from the middle of the area, began a volume at 21:31 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
Jul 28, 4:00 PM MSTFLASH FLOOD10 Ne Tucson, AZHIGH WATER ON ROADWAY AT SNYDER AND SABINO.
Jul 28, 4:00 PM MSTFLASH FLOOD7 Ne Tucson, AZSINKHOLE IN ROAD AT RIVER AND CRAYCROFT
Jul 28, 4:30 PM MSTFLASH FLOODSabino Canyon, AZ4FT RISE IN 30 MINTUES ON SABINO CANYON AND SABINO DAM
Jul 28, 4:53 PM MSTFLASH FLOODPicture Rocks, AZVEHICLE STUCK IN BRAWLEY WASH AT MANVILLE ROAD AND AVRA ROAD.

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, 9.5 hours before the alert went out and 16 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 2007-07-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1095 joules per kilogram.LCLEL10008507005003002001001 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 2007-07-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 15 square meters per square second.1939Sfc1 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
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 282131
FFWTWC
AZC019-021-290045-
/X.EXT.KTWC.FF.W.0023.000000T0000Z-070729T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

THE NATIONAL WEATHER SERVICE IN TUCSON HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  EASTERN PIMA COUNTY IN SOUTH CENTRAL ARIZONA...
  THIS INCLUDES THE CITIES OF...TUCSON...ORO VALLEY...MARANA...GREEN
  VALLEY...
  SOUTHEASTERN PINAL COUNTY IN SOUTH CENTRAL ARIZONA...

* UNTIL 545 PM MST

* AT 223 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SEVERAL AREAS OF STRONG THUNDERSTORMS AND HEAVY SHOWERS CONTINUING
  ACROSS PORTIONS OF EASTERN PIMA  AND FAR SOUTHEAST PINAL COUNTIES.
  IN ADDITION...EARLIER RAINFALL AMOUNTS BETWEEN 1 AND 3 INCHES WILL 
  CONTINUE TO CAUSE HEAVY RUNOFF INTO THE EVENING HOURS.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO TUCSON...ORO
  VALLEY...THREE POINTS...GREEN VALLEY...SAN MANUEL...ORACLE AND
  MAMMOTH.

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

THIS WARNING REPLACES THE PREVIOUSLY ISSUED FLASH FLOOD WARNING FOR
THIS AREA.

LAT...LON 3174 11145 3175 11047 3280 11047 3250 11143

$$

WEATHER.GOV/TUCSON
2 follow-up statements
000 
WGUS75 KTWC 282233
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
327 PM MST SAT JUL 28 2007

AZC019-021-290045-
/X.CON.KTWC.FF.W.0023.000000T0000Z-070729T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PIMA AZ-PINAL AZ-
327 PM MST SAT JUL 28 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 PM MST FOR
SOUTHEASTERN PINAL AND EASTERN PIMA COUNTIES...

AT 325 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A LARGE AREA OF THUNDERSTORMS PRODUCING VERY HEAVY RAINFALL 
ACROSS MUCH OF EASTERN PIMA AND FAR SOUTHEAST PINAL COUNTIES. THE 
STRONGEST STORMS WERE NOTED ACROSS THE NORTHERN HALF OF TUCSON AS 
WELL AS THE AVRA VALLEY AREA AND BETWEEN SAHUARITA AND THREE POINTS. 
MOVEMENT WAS TO THE SOUTH AT ABOUT 10 MPH. SOME LOCATIONS HAVE 
REPORTED NEARLY 3 INCHES OF RAINFALL WITH AMOUNTS BETWEEN 1 AND 2 
INCHES COMMON.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO 
TUCSON...SABINO CANYON...THREE POINTS...GREEN VALLEY...ORO 
VALLEY...MARANA...SILVER BELL...SAN MANUEL...ORACLE...MAMMOTH AND 
ESPECIALLY THE MOUNTAINS AND FOOTHILLS IN AND AROUND THE GREATER 
TUCSON AREA.

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

LAT...LON 3174 11145 3175 11047 3280 11047 3247 11160

$$

WEATHER.GOV/TUCSON
000 
WGUS75 KTWC 282328
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
418 PM MST SAT JUL 28 2007

AZC019-021-290045-
/X.CON.KTWC.FF.W.0023.000000T0000Z-070729T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PIMA AZ-PINAL AZ-
418 PM MST SAT JUL 28 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 PM MST FOR
SOUTHEASTERN PINAL AND EASTERN PIMA COUNTIES...

AT 415 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS 
INDICATING THAT THE THUNDERSTORMS PRODUCING VERY HEAVY RAIN HAD 
MOVED INTO CENTRAL PIMA COUNTY...WHICH INCLUDES THE TOHONO OODHAM 
NATION. HOWEVER...LIGHT TO MODERATE RAIN CONTINUES OVER MUCH OF 
EASTERN PIMA COUNTY INCLUDING THE TUCSON METRO AREA. EARLIER THIS 
AFTERNOON A TRAINED WEATHER SPOTTER REPORTED RECEIVING 3.5 INCHES OF 
RAIN NEAR THE INTERSECTION OF SABINO CANYON ROAD AND KOLB. FLOW IN 
THE SABINO CANYON AREA IS HIGH WITH THE GAUGE AT THE SABINO CANYON 
DAM INDICATING THAT THE FLOW IS ABOUT A FOOT ABOVE FLOOD STAGE. 
PROPERTY IN THIS AREA WILL LIKELY BE IMPACTED...AND PERSONS NEAR THE 
CANYON SHOULD EXPECT RAPID FLOW IN SABINO CANYON.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO THE 
TUCSON METRO AREA...SAN MANUEL...ORO VALLEY...ORACLE...MARANA AND 
MAMMOTH.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

LAT...LON 3174 11145 3175 11047 3280 11047 3247 11160

$$

WEATHER.GOV/TUCSON
MOLLERE

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 27, 5:33 PM MSTFlash Flood WarningTWCCochise87 min
Jul 27, 6:27 PM MSTFlash Flood WarningTWCPima93 min
Jul 27, 6:28 PM MSTSevere Thunderstorm WarningTWCPima47 min
Jul 27, 6:57 PM MSTAreal Flood AdvisoryTWCCochise63 min
Jul 27, 7:51 PM MSTAreal Flood AdvisoryTWCCochise, Graham, Greenlee4 hr
Jul 28, 10:07 AM MSTAreal Flood AdvisoryTWCCochise, Santa Cruz3 hr
Jul 28, 11:14 AM MSTFlash Flood WatchTWC10 hr
Jul 28, 11:38 AM MSTFlash Flood WarningTWCCochise, Pima, Santa Cruz2 hr
Jul 28, 12:44 PM MSTSevere Thunderstorm WarningTWCPima46 min
Jul 28, 12:50 PM MSTFlash Flood WarningTWCPima5 hr
Jul 28, 1:27 PM MSTSevere Thunderstorm WarningTWCPima46 min
Jul 28, 4:09 PM MSTAreal Flood AdvisoryTWCPima, Pinal3 hr

Nearby

Flash Flood Warnings in Arizona, 2007Every 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.