Alert archive / Arizona / Flash Flood Warnings in 2022

Flash Flood Warning 292, NWS Phoenix, AZ

September 22, 2022Maricopa County, Arizona

NWS Phoenix, AZ issued this flash flood warning at Sep 22, 2022, 3:25 PM MST for 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: Sep 22, 2022, 3:25 PM MST (22:25 UTC)
Expired: Sep 22, 2022, 6:15 PM MST
In force: 3 hr
Issued by: NWS Phoenix, AZ
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

County Maricopa County, AZ

The radar

The Phoenix radar (KIWA), 77 km from the middle of the area, began a volume at 22:28 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, 10.4 hours before the alert went out and 198 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: 602 J/kg
Mixed-layer CIN: -128 J/kg
Mixed-layer LCL: 1130 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 1 m²/s²
0-3 km storm-relative helicity: 43 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 Sep 22, 2:10 PM MST, 1 hour 15 minutes earlier.

Area forecast discussion, Sep 22, 2:10 PM MST, 1 hour 15 minutes before

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In the hours before

Special weather statement, Sep 22, 1:17 PM MST, 2 hours 8 minutes before

Special Weather Statement
National Weather Service Phoenix AZ
117 PM MST Thu Sep 22 2022

AZZ560-563-222100-
Southeast Gila County AZ-San Carlos AZ-
117 PM MST Thu Sep 22 2022

...A strong thunderstorm will impact portions of Gila County through
200 PM MST...

At 117 PM MST, Doppler radar was tracking a strong thunderstorm 8
miles north of Cutter, or 9 miles northeast of Globe, moving
northeast at 10 mph.

HAZARD...Winds in excess of 40 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 County.

This includes US Highway 60 between mile markers 256 and 282.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

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.

&&

LAT...LON 3338 11067 3349 11078 3373 11057 3352 11037
TIME...MOT...LOC 2017Z 230DEG 10KT 3347 11065

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

Feldkircher

Special weather statement, Sep 22, 1:22 PM MST, 2 hours 3 minutes before

Special Weather Statement
National Weather Service Phoenix AZ
122 PM MST Thu Sep 22 2022

AZZ533-222115-
Central La Paz AZ-
122 PM MST Thu Sep 22 2022

...Strong thunderstorms will impact portions of central La Paz and
northern Yuma Counties through 215 PM MST...

At 122 PM MST, Doppler radar was tracking strong thunderstorms along
a line extending from 8 miles north of Brenda to 7 miles east of Kofa
Wildlife Refuge. Movement was northeast at 10 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

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

Locations impacted include...
Brenda.

This includes the following highways...
AZ Interstate 10 between mile markers 32 and 49.
US Highway 60 between mile markers 32 and 47.
AZ Route 72 between mile markers 29 and 47.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

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

&&

LAT...LON 3404 11384 3346 11365 3337 11393 3338 11394
      3386 11405
TIME...MOT...LOC 2022Z 234DEG 7KT 3381 11396 3346 11389

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

Feldkircher

Special weather statement, Sep 22, 1:27 PM MST, 1 hour 58 minutes before

Special Weather Statement
National Weather Service Phoenix AZ
127 PM MST Thu Sep 22 2022

AZZ553-554-559-222115-
Sonoran Desert Natl Monument AZ-Northwest Pinal County AZ-
West Pinal County AZ-
127 PM MST Thu Sep 22 2022

...A strong thunderstorm will impact portions of Maricopa and Pinal
Counties through 215 PM MST...

At 127 PM MST, Doppler radar was tracking a strong thunderstorm near
Estrella, or 19 miles east of Gila Bend, moving northeast at 15 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

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

Locations impacted include...
Estrella, Estrella Sailport, Sonoran National Monument, Big Horn and
Mobile.

This includes the following highways...
AZ Interstate 8 between mile markers 128 and 141.
AZ Route 238 between mile markers 13 and 39.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

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.

&&

LAT...LON 3282 11233 3289 11254 3321 11241 3309 11212
TIME...MOT...LOC 2027Z 205DEG 12KT 3295 11235

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

Feldkircher

Special weather statement, Sep 22, 1:58 PM MST, 1 hour 27 minutes before

Special Weather Statement
National Weather Service Phoenix AZ
158 PM MST Thu Sep 22 2022

AZZ563-222145-
Southeast Gila County AZ-
158 PM MST Thu Sep 22 2022

...A strong thunderstorm will impact portions of Gila County through
245 PM MST...

At 157 PM MST, Doppler radar was tracking a strong thunderstorm 9
miles west of Hilltop, or 20 miles northeast of Globe, moving
northeast at 10 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

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

Locations impacted include...
Sawmill and Hilltop.

This includes US Highway 60 between mile markers 266 and 287.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

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.

&&

LAT...LON 3349 11060 3363 11075 3383 11058 3358 11035
TIME...MOT...LOC 2057Z 226DEG 9KT 3364 11059

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

Feldkircher

Special weather statement, Sep 22, 2:10 PM MST, 1 hour 15 minutes before

Special Weather Statement
National Weather Service Phoenix AZ
210 PM MST Thu Sep 22 2022

AZZ533-534-222200-
Aguila Valley AZ-Central La Paz AZ-
210 PM MST Thu Sep 22 2022

...A strong thunderstorm will impact portions of northeastern La Paz
and Maricopa Counties through 300 PM MST...

At 210 PM MST, Doppler radar was tracking a strong thunderstorm near
Aguila, or 23 miles west of Wickenburg, moving northeast at 25 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

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

Locations impacted include...
Gladden and Aguila.

This includes US Highway 60 between mile markers 73 and 104.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

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.

&&

LAT...LON 3400 11333 3400 11279 3372 11309 3390 11339
      3406 11334
TIME...MOT...LOC 2110Z 214DEG 20KT 3389 11315

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

Feldkircher

Special weather statement, Sep 22, 2:17 PM MST, 1 hour 8 minutes before

Special Weather Statement
National Weather Service Phoenix AZ
217 PM MST Thu Sep 22 2022

AZZ533-222200-
Central La Paz AZ-
217 PM MST Thu Sep 22 2022

...A strong thunderstorm will impact portions of northeastern La Paz
County through 300 PM MST...

At 217 PM MST, Doppler radar was tracking a strong thunderstorm 8
miles southeast of Bouse, or 29 miles southeast of Parker, moving
northeast at 10 mph.

HAZARD...Winds in excess of 40 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 northeastern La Paz
County.

This includes AZ Route 72 between mile markers 29 and 42.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3372 11391 3379 11404 3418 11390 3395 11353
TIME...MOT...LOC 2117Z 204DEG 9KT 3384 11390

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

Feldkircher

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 21, 5:16 PM MST	Flash Flood Warning Considerable damage threat	PSR	La Paz	3 hr
Sep 21, 5:24 PM MST	Special Weather Statement	PSR		66 min
Sep 21, 5:32 PM MST	Special Weather Statement	PSR	Yuma	43 min
Sep 21, 5:34 PM MST	Special Weather Statement	PSR		56 min
Sep 21, 5:41 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa, Yuma	3 hr
Sep 21, 6:01 PM MST	Flash Flood Warning Considerable damage threat	PSR	La Paz, Yuma	3 hr
Sep 21, 6:12 PM MST	Special Weather Statement	PSR	La Paz	63 min
Sep 21, 7:04 PM MST	Special Weather Statement	PSR	La Paz	56 min
Sep 21, 8:18 PM MST	Special Weather Statement	PSR	La Paz	57 min
Sep 21, 9:05 PM MST	Areal Flood Warning	PSR	Maricopa, Pinal	11 hr
Sep 22, 10:19 AM MST	Special Weather Statement	PSR	Gila	26 min
Sep 22, 12:26 PM MST	Special Weather Statement	PSR	La Paz	49 min
Sep 22, 12:28 PM MST	Special Weather Statement	PSR		47 min
Sep 22, 1:17 PM MST	Special Weather Statement	PSR	Gila	43 min
Sep 22, 1:22 PM MST	Special Weather Statement	PSR	La Paz	53 min
Sep 22, 1:27 PM MST	Special Weather Statement	PSR	Maricopa	48 min
Sep 22, 1:58 PM MST	Special Weather Statement	PSR	Gila	47 min
Sep 22, 2:10 PM MST	Special Weather Statement	PSR		50 min
Sep 22, 2:17 PM MST	Special Weather Statement	PSR	La Paz	43 min
Sep 22, 2:25 PM MST	Areal Flood Advisory	PSR	La Paz	2 hr
Sep 22, 3:02 PM MST	Areal Flood Advisory	PSR	Maricopa	23 min
Sep 22, 3:58 PM MST	Areal Flood Advisory	PSR	La Paz	3 hr
Sep 22, 4:57 PM MST	Areal Flood Advisory	PSR	La Paz	4 hr

Nearby

Flash Flood Warnings in Arizona, 2022 Every flash flood warning in 2022

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.