Alert archive / Arizona / Flash Flood Warnings in 2026
Flash Flood Warning 30, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Jul 14, 2026, 4:28 PM MST for Graham County, Pinal 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 outline as issued.
The facts
- Issued
- Jul 14, 2026, 4:28 PM MST (23:28 UTC)
- Expired
- Jul 14, 2026, 7:30 PM MST
- In force
- 3 hr
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
Counties Graham County, AZ, Pinal County, AZ
The radar
The Phoenix radar (KIWA), 111 km from the middle of the area, began a volume at 23:30 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Phoenix, AZ (KPSR), launched 12:00Z, 11.5 hours before the alert went out and 143 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1895 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 12 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
142
WGUS55 KTWC 142328
FFWTWC
AZC009-021-150230-
/O.NEW.KTWC.FF.W.0030.260714T2328Z-260715T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Tucson AZ
428 PM MST Tue Jul 14 2026
The National Weather Service in Tucson has issued a
* Flash Flood Warning for...
Western Graham County in southeastern Arizona...
East Central Pinal County in southeastern Arizona...
* Until 730 PM MST.
* At 428 PM MST, gauge reports indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2 inches of rain
have fallen. Additional rainfall amounts of 0.5 to 1 inch are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Gauges reported.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Dudleyville and Aravaipa Canyon Wilderness.
This includes Route 77 between mile markers 125 and 131.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
Flooding is occurring or is imminent. It is important to know where
you are relative to streams, rivers, or creeks which can become
killers in heavy rains. Campers and hikers should avoid streams or
creeks.
&&
LAT...LON 3299 11053 3299 11045 3297 11038 3289 11040
3285 11045 3283 11058 3284 11070 3287 11075
3295 11074 3298 11063
FLASH FLOOD...GAUGE INDICATED
$$
KM2 follow-up statements
427
WGUS75 KTWC 150018
FFSTWC
Flash Flood Statement
National Weather Service Tucson AZ
518 PM MST Tue Jul 14 2026
AZC009-021-150230-
/O.CON.KTWC.FF.W.0030.000000T0000Z-260715T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Graham AZ-Pinal AZ-
518 PM MST Tue Jul 14 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 730 PM MST THIS
EVENING FOR WESTERN GRAHAM AND EAST CENTRAL PINAL COUNTIES...
At 518 PM MST, Doppler radar indicated thunderstorms produced heavy
rain across the warned area. Between 1 and 2 inches of rain have
fallen. Flooding impacts will continue, but no additional rainfall is
expected. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar indicated.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Dudleyville and Aravaipa Canyon Wilderness.
This includes Route 77 between mile markers 125 and 131.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
Flooding is occurring or is imminent. It is important to know where
you are relative to streams, rivers, or creeks which can become
killers in heavy rains. Campers and hikers should avoid streams or
creeks.
&&
LAT...LON 3299 11053 3299 11045 3297 11038 3289 11040
3285 11045 3283 11058 3284 11070 3287 11075
3295 11074 3298 11063
FLASH FLOOD...RADAR INDICATED
$$
KM562
WGUS75 KTWC 150223
FFSTWC
Flash Flood Statement
National Weather Service Tucson AZ
723 PM MST Tue Jul 14 2026
AZC009-021-150233-
/O.EXP.KTWC.FF.W.0030.000000T0000Z-260715T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Graham AZ-Pinal AZ-
723 PM MST Tue Jul 14 2026
...FLASH FLOOD WARNING WILL EXPIRE AT 730 PM MST THIS EVENING FOR
WESTERN GRAHAM AND EAST CENTRAL PINAL COUNTIES...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
&&
LAT...LON 3299 11053 3299 11045 3297 11038 3289 11040
3285 11045 3283 11058 3284 11070 3287 11075
3295 11074 3298 11063
$$
KMWhat 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 Tucson, AZ wrote its last area forecast discussion before this flash flood warning went out at Jul 14, 12:31 PM MST, 3 hours 57 minutes earlier. Its key messages:
- Scattered thunderstorms are expected this afternoon and evening with a threat of heavy rainfall and strong outflow winds.
- Daily chances for thunderstorms will continue through the week with increasing moisture Thursday and Friday bringing more widespread chances. Slight Risk for Excessive Rainfall Thursday and Friday, raising the risk for flash flooding.
- High temperatures will sit just below normal through mid-week with before cooling further by the end of the week.
Area forecast discussion, Jul 14, 12:31 PM MST, 3 hours 57 minutes before
Area Forecast Discussion National Weather Service Tucson AZ 1231 PM MST Tue Jul 14 2026 .KEY MESSAGES... - Scattered thunderstorms are expected this afternoon and evening with a threat of heavy rainfall and strong outflow winds. - Daily chances for thunderstorms will continue through the week with increasing moisture Thursday and Friday bringing more widespread chances. Slight Risk for Excessive Rainfall Thursday and Friday, raising the risk for flash flooding. - High temperatures will sit just below normal through mid-week with before cooling further by the end of the week. && .SYNOPSIS... There will be thunderstorm chances each afternoon and evening through the coming week with day to day variability in location and severity, with more widespread chances for showers and thunderstorms forecast Thursday and Friday. Scattered thunderstorms today will bring a threat of heavy rainfall and strong wind gusts. High temperatures will sit just below normal through mid-week before cooling further by the end of the week. && .DISCUSSION... The atmosphere has a healthy amount of moisture across the region. Precipitable water content range from 1.80 inches in Phoenix to 1.30 inches in southeast Cochise County based on the latest satellite imagery. Thunderstorms are firing up across the region with a storm motion of westerly. With the abundant moisture in place and the CAPE values rising up to 2700 J/kg by the afternoon, the main threat today will be flash flooding due to the heavy rainfall. The secondary threat will be gusty outflows. HREF models indicate 5-20% for gusts greater than 35 mph this afternoon. Tomorrow: The upper pattern flow will switch from the northeast, bringing energy down from the White Mountains into the valleys. There will be drier air in the upper levels to support robust thunderstorms. The HREF probabilities for strong gusty winds increases; highest areas (greater than 50%) will be the line from Tucson to Safford and northwest. The shift of threats become wind as the main threat with secondary threat of flash flooding. Localize blowing dust is possible. Thursday and Friday: An easterly wave will be moving into the region, enhancing the thunderstorm activity for the region. This will keep and even nudge precipitable water content up through this period. Ensemble models has Tucson near the 95th percentile by Thursday. Chances for 24 hour rainfall amounts greater than 0.75 inches will increase by the afternoon into the late night. NBM chances has 45% in the Catalinas, 45% in Sierra Vista, and up to 63% in Nogales. Areas along the Mogollon Rim has over 70% chances for 0.75 inches. WPC has highlighted a Slight Risk (15%) for Excessive Rainfall and therefore elevating the risk for flash flooding. Especially when the soils are becoming more saturated since the weekend. Friday has the same indicators but the upper level flow slows down and potentially kinking the thunderstorm growth, or also known as clouded over. Details will still need to be worked as we closer and allow for more model runs to come in. Weekend: Monsoon pattern will continue with daily chances for thunderstorms. The high pressure center will stay near the Four Corners, continuing the easterly flow across the region. && .AVIATION... Valid through 16/00Z. SCT-BKN ceilings 10k-15k through the afternoon and late evening. Scattered thunderstorm redevelopment expected after 14/19Z and again after 15/19Z. Thunderstorm activity diminishes after 15/03Z. Heavy rainfall, mountain obscurations, and erratic strong wind gusts 35-40 kts possible with any thunderstorm. Outside of thunderstorms, surface winds generally light and under 10 kts. Aviation discussion not updated for TAF amendments. && .FIRE WEATHER... Daily chances for thunderstorms will continue each afternoon and evening through the coming week with day to day variability. More widespread chances for showers and thunderstorms are possible Thursday and Friday. Minimum relative humidity 25-30 percent in the lower desert locations and above 40 percent in the mountains this week. Winds this week will remain mainly light and under 15 mph, though strong and erratic winds will be possible with any thunderstorm.&& .TWC WATCHES/WARNINGS/ADVISORIES... None. && Visit us on Facebook, X, YouTube, and at weather.gov/Tucson
In the hours before
Local storm report, Jul 14, 1:32 PM MST, 2 hours 56 minutes before
Preliminary Local Storm Report
National Weather Service Tucson AZ
132 PM MST Tue Jul 14 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1205 AM Flash Flood 6 ESE Tucson 32.18N 110.79W
07/14/2026 Pima AZ Broadcast Media
Swift water rescue around 1205 AM. The
Pantano Wash upstream at Houghton Rd had
around 500-715 cfs.
&&
JRMLocal storm report, Jul 14, 1:39 PM MST, 2 hours 49 minutes before
Preliminary Local Storm Report
National Weather Service Tucson AZ
139 PM MST Tue Jul 14 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1205 AM Flash Flood 6 ESE Tucson 32.18N 110.79W
07/14/2026 Pima AZ Broadcast Media
Corrects previous flash flood report from 6
ESE Tucson. Swift water rescue around 1205
AM. The Pantano Wash upstream at Houghton Rd
had around 500-715 cfs. The road was closed
at 630 PM the previous night.
&&
JRMLocal storm report, Jul 14, 4:17 PM MST, 11 minutes before
Preliminary Local Storm Report
National Weather Service Tucson AZ
417 PM MST Tue Jul 14 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0402 PM Tstm Wnd Gst 14 E Dudleyville 32.94N 110.49W
07/14/2026 M54 MPH Pinal AZ Mesonet
Mesonet station QHRA3 Horse Camp gusted to
54 mph. Time estimated by radar.
&&
JVTThe office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 6:49 PM MST | Areal Flood Advisory | TWC | Pinal | 116 min |
| Jul 14, 3:52 PM MST | Severe Thunderstorm Warning | TWC | Pinal | 38 min |
| Jul 14, 4:21 PM MST | Severe Thunderstorm Warning | TWC | Pinal | 39 min |
Nearby
Flash Flood Warnings in Arizona, 2026Every flash flood warning in 2026
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.