Alert archive / Arizona / Flash Flood Watches in 2013

Flash Flood Watch 3, NWS Tucson, AZ

July 25, 20136 counties in Arizona

NWS Tucson, AZ issued this flash flood watch at Jul 25, 2013, 9:51 AM MST for 6 counties in Arizona. It took effect at Jul 25, 2013, 11:00 AM MST. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued: Jul 25, 2013, 9:51 AM MST (16:51 UTC)
In effect from: Jul 25, 2013, 11:00 AM MST
Expired: Jul 25, 2013, 7:04 PM MST
In force: 8 hr
Issued by: NWS Tucson, AZ
Flood severity: None

Counties Cochise County, AZ, Graham County, AZ, Greenlee County, AZ, Pima County, AZ, Pinal County, AZ, Santa Cruz County, AZ

The radar

The Tucson radar (KEMX), 61 km from the middle of the area, began a volume at 16:55 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 12:00Z, 4.9 hours before the alert went out and 49 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: 1053 J/kg
Mixed-layer CIN: -87 J/kg
Mixed-layer LCL: 1357 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: 33 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tucson, AZ wrote its last area forecast discussion before this flash flood watch went out at Jul 25, 8:25 AM MST, 1 hour 26 minutes earlier.

Area forecast discussion, Jul 25, 8:25 AM MST, 1 hour 26 minutes before

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In the hours before

Local storm report, Jul 25, 8:23 AM MST, 1 hour 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TUCSON AZ
823 AM MST THU JUL 25 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0830 PM     FLASH FLOOD      CHIRICAHUA NATIONAL MON 32.01N 109.36W
07/23/2013                   COCHISE            AZ   FOREST SERVICE

            FLASH FLOODING OCCURRED DOWN BONITA CREEK IN THE
            CHIRICAHUA NATIONAL MONUMENT. BONITA CANYON DRIVE AND
            THE CAMPGROUNDS IN BONITA CANYON WERE CLOSED SO NO
            PEOPLE WERE INJURED. DEBRIS WAS PUSHED DOWN THE CREEK
            AND TREE MATERIAL PILED UP ALONG A WALKING BRIDGE. WATER
            AND DEBRIS ALSO DAMAGED A RESTROOM IN THE CAMPING AREA.

&&

EVENT NUMBER TWC1300075

BROST

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 24, 5:16 PM MST	Areal Flood Advisory	TWC	Cochise	3 hr
Jul 24, 5:21 PM MST	Special Weather Statement	TWC	Cochise	24 min
Jul 24, 5:43 PM MST	Flash Flood Warning	TWC	Cochise, Graham	2 hr
Jul 25, 12:15 PM MST	Flash Flood Warning	TWC	Pima	3 hr
Jul 25, 12:29 PM MST	Special Weather Statement	TWC	Pima	46 min
Jul 25, 12:38 PM MST	Flash Flood Warning	TWC	Pima, Pinal	3 hr
Jul 25, 12:44 PM MST	Special Weather Statement	TWC	Santa Cruz	46 min
Jul 25, 1:02 PM MST	Flash Flood Warning	TWC	Pima	118 min
Jul 25, 1:22 PM MST	Severe Thunderstorm Warning	TWC	Pima	38 min
Jul 25, 1:52 PM MST	Special Weather Statement	TWC		38 min
Jul 25, 1:59 PM MST	Flash Flood Warning	TWC	Pima	3 hr
Jul 25, 2:02 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Graham	43 min
Jul 25, 2:13 PM MST	Areal Flood Advisory	TWC	Pinal	2 hr
Jul 25, 2:43 PM MST	Flash Flood Warning	TWC	Pima	2 hr
Jul 25, 2:52 PM MST	Flash Flood Warning	TWC	Cochise	3 hr
Jul 25, 3:01 PM MST	Flash Flood Warning	TWC	Pima	119 min
Jul 25, 3:55 PM MST	Flash Flood Warning	TWC	Pima, Pinal	3 hr
Jul 25, 4:02 PM MST	Flash Flood Warning	TWC	Pima	118 min

Nearby

Flash Flood Watches in Arizona, 2013 Every flash flood watch in 2013

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.