Alert archive / Arizona / Flash Flood Warnings in 2024

Flash Flood Warning 8, NWS Phoenix, AZ

July 1, 2024Gila County, Maricopa County, Arizona

NWS Phoenix, AZ issued this flash flood warning at Jul 1, 2024, 2:08 PM MST for Gila County, Maricopa County, Arizona. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 1, 2024, 2:08 PM MST (21:08 UTC)
Expired: Jul 1, 2024, 5:15 PM MST
In force: 3 hr
Issued by: NWS Phoenix, AZ
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

Counties Gila County, AZ, Maricopa County, AZ

The radar

The Phoenix radar (KIWA), 32 km from the middle of the area, began a volume at 21:11 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 12:00Z, 9.1 hours before the alert went out and 171 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: 676 J/kg
Mixed-layer CIN: -206 J/kg
Mixed-layer LCL: 2247 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 97 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 warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Phoenix, AZ wrote its last area forecast discussion before this flash flood warning went out at Jul 1, 1:46 PM MST, 22 minutes earlier.

Area forecast discussion, Jul 1, 1:46 PM MST, 22 minutes before

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In the hours before

Special weather statement, Jul 1, 12:49 PM MST, 1 hour 19 minutes before

Special Weather Statement
National Weather Service Phoenix AZ
1249 PM MST Mon Jul 1 2024

AZZ547-552-556-558-012030-
Tonto Basin AZ-Superior AZ-Rio Verde/Salt River AZ-
Pinal/Superstition Mountains AZ-
1249 PM MST Mon Jul 1 2024

...A STRONG THUNDERSTORM WILL IMPACT GILA...MARICOPA AND PINAL
COUNTIES THROUGH 130 PM MST...

At 1249 PM MST, Doppler radar was tracking a strong thunderstorm 10
miles southeast of Apache Lake, or 11 miles north of Superior, moving
northeast at 10 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

This storm will remain over mainly rural areas of Gila, Maricopa and
Pinal Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3332 11115 3344 11132 3367 11116 3350 11091
TIME...MOT...LOC 1949Z 219DEG 8KT 3344 11119

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

GL

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 7:06 PM MST	Dust Storm Warning	PSR	Maricopa, Pinal	24 min
Jun 30, 7:45 PM MST	Dust Storm Advisory	PSR	Maricopa, Pinal	45 min
Jul 1, 12:49 PM MST	Special Weather Statement	PSR	Gila	41 min
Jul 1, 3:09 PM MST	Special Weather Statement	PSR	Pinal	51 min
Jul 1, 3:30 PM MST	Special Weather Statement	PSR		30 min
Jul 1, 4:03 PM MST	Special Weather Statement	PSR	Gila	42 min
Jul 1, 4:46 PM MST	Special Weather Statement	PSR	Pinal	29 min

Nearby

Flash Flood Warnings in Arizona, 2024 Every flash flood warning in 2024

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.