Alert archive / Arizona / Flash Flood Warnings in 2025

Flash Flood Warning 7, NWS Flagstaff, AZ

July 2, 2025Yavapai County, Arizona

NWS Flagstaff, AZ issued this flash flood warning at Jul 2, 2025, 4:49 PM MST for Yavapai County, Arizona. It was in force for 9 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 2, 2025, 4:49 PM MST (23:49 UTC)
Expired: Jul 3, 2025, 1:45 AM MST
In force: 9 hr
Issued by: NWS Flagstaff, AZ
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

County Yavapai County, AZ

The radar

The Flagstaff radar (KFSX), 124 km from the middle of the area, began a volume at 23:52 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

Phoenix, AZ (KPSR), launched 12:00Z, 11.8 hours before the alert went out and 141 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: 458 J/kg
Mixed-layer CIN: -169 J/kg
Mixed-layer LCL: 2537 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 88 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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 Flagstaff, AZ wrote its last area forecast discussion before this flash flood warning went out at Jul 2, 3:50 PM MST, 59 minutes earlier.

Area forecast discussion, Jul 2, 3:50 PM MST, 59 minutes before

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In the hours before

Local storm report, Jul 2, 12:14 PM MST, 4 hours 35 minutes before

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Special weather statement, Jul 2, 1:01 PM MST, 3 hours 48 minutes before

Special Weather Statement
National Weather Service Flagstaff AZ
101 PM MST Wed Jul 2 2025

AZZ008-037-022100-
Yavapai County Mountains AZ-Yavapai County Valleys and Basins AZ-
101 PM MST Wed Jul 2 2025

...A STRONG THUNDERSTORM WILL IMPACT YAVAPAI COUNTY UNTIL 2 PM MST...

At 101 PM MST, Doppler radar was tracking a strong thunderstorm near
Mayer, or 15 miles southeast of Prescott, moving northeast at 5 mph.

HAZARD...Wind gusts of 50 to 55 mph and half inch size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is possible.

Locations impacted include...
  Prescott Valley, Dewey-Humboldt, Mayer, Spring Valley, Mt. Union
  and Poland Junction.

This includes State Route 69 between mile markers 265 and 279.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the weather situation closely and be alert for threatening
weather conditions.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

Torrential rainfall is also occurring with this storm and may lead
to flash flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3434 11232 3441 11241 3455 11228 3439 11209
      3428 11225
TIME...MOT...LOC 2000Z 225DEG 5KT 3438 11229

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 TO 55 MPH

Bernhart

Local storm report, Jul 2, 4:25 PM MST, 24 minutes before

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Local storm report, Jul 2, 4:26 PM MST, 23 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 5:44 PM MST	Areal Flood Advisory	FGZ	Yavapai	3 hr
Jul 1, 7:37 PM MST	Special Weather Statement	FGZ	Navajo	23 min
Jul 2, 1:01 PM MST	Special Weather Statement	FGZ	Yavapai	59 min
Jul 2, 1:24 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Yavapai	5 hr
Jul 2, 1:36 PM MST	Areal Flood Advisory	FGZ	Coconino	3 hr
Jul 2, 1:59 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	31 min
Jul 2, 2:08 PM MST	Areal Flood Advisory	FGZ	Navajo	3 hr
Jul 2, 2:34 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	41 min
Jul 2, 3:24 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Gila	3 hr

Nearby

Flash Flood Warnings in Arizona, 2025 Every flash flood warning in 2025

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.