Alert archive / Arizona / Flash Flood Warnings in 2026
Flash Flood Warning 9, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Jun 24, 2026, 4:35 PM MST for Cochise County, Arizona. It was in force for 3 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 24, 2026, 4:35 PM MST (23:35 UTC)
- Expired
- Jun 24, 2026, 7:30 PM MST
- In force
- 3 hr
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Cochise County, AZ
The radar
The Tucson radar (KEMX), 66 km from the middle of the area, began a volume at 23:38 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 24, 5:05 PM MST | RAIN 2.55 | 12 Se Sierra Vista, AZ | Total rainfall fell in about 90 minutes. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
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, 11.6 hours before the alert went out and 277 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
- 3041 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 46 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
140
WGUS55 KTWC 242335
FFWTWC
AZC003-250230-
/O.NEW.KTWC.FF.W.0009.260624T2335Z-260625T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Tucson AZ
435 PM MST Wed Jun 24 2026
The National Weather Service in Tucson has issued a
* Flash Flood Warning for...
Southern Cochise County in southeastern Arizona...
* Until 730 PM MST.
* At 435 PM MST, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2 inches of rain
have fallen. 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...
Sierra Vista, Hereford and Palominas.
This includes Route 92 between mile markers 334 and 340.
This includes the following Flash Flood Prone Locations...
Moson Rd from HWY 90 and Hereford Rd.
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.
&&
LAT...LON 3151 11021 3151 11011 3135 11011 3135 11022
3144 11022
FLASH FLOOD...RADAR INDICATED
$$
GLZ2 follow-up statements
802
WGUS75 KTWC 242353
FFSTWC
Flash Flood Statement
National Weather Service Tucson AZ
453 PM MST Wed Jun 24 2026
AZC003-250230-
/O.CON.KTWC.FF.W.0009.000000T0000Z-260625T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cochise AZ-
453 PM MST Wed Jun 24 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 730 PM MST THIS
EVENING FOR SOUTHERN COCHISE COUNTY...
At 453 PM MST, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 1.5 and 2.5 inches of rain have
fallen. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Life threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Radar indicated.
IMPACT...Life threatening flash flooding of creeks and streams, urban
areas, highways, streets and underpasses.
Some locations that will experience flash flooding include...
Hereford and Palominas.
This includes Route 92 between mile markers 334 and 340.
This includes the following Flash Flood Prone Locations...
Moson Rd from HWY 90 and Hereford Rd.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3151 11021 3151 11011 3135 11011 3135 11022
3144 11022
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
GLZ991
WGUS75 KTWC 250230
FFSTWC
Flash Flood Statement
National Weather Service Tucson AZ
730 PM MST Wed Jun 24 2026
AZC003-250240-
/O.EXP.KTWC.FF.W.0009.000000T0000Z-260625T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cochise AZ-
730 PM MST Wed Jun 24 2026
...FLASH FLOOD WARNING HAS EXPIRED FOR SOUTHERN COCHISE COUNTY...
The heavy rain has ended. Flash flooding is no longer expected to
pose a threat. Please continue to heed remaining road closures.
&&
LAT...LON 3151 11021 3151 11011 3135 11011 3135 11022
3144 11022
$$
GLZWhat 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 Jun 24, 1:41 PM MST, 2 hours 54 minutes earlier.
Area forecast discussion, Jun 24, 1:41 PM MST, 2 hours 54 minutes before
Area Forecast Discussion National Weather Service Tucson AZ 141 PM MST Wed Jun 24 2026 .SYNOPSIS... Chance of thunderstorms south and east of Tucson today through Thursday, with dry conditions returning Friday into the weekend. High temperatures will be several degrees above normal through the work week, resulting in moderate to major HeatRisk. Breezy southwest winds during the afternoon and evening Friday through Monday result in near critical fire weather conditions. && .DISCUSSION... Much of the virga/light shower activity from this morning has moved north/northeastward and/or dissipated this early afternoon. Showers have begun to build in the Huachuca Mountains near Sierra Vista, with minimal activity elsewhere. The latest HRRR run keeps the storm activity mainly areas south and east of Tucson, with the metro on the outer fringes of chances. With the dry low levels and DCAPE of 1400-1600 J/kg, the greatest impacts with the storms continue to be the wind gusts of 40-60 mph and lofted areas of blowing dust around those storms. Activity will decrease into the evening, with possibly some lingering showers in Cochise County overnight. Shower/thunderstorm activity tomorrow afternoon and evening continues to be focused on areas south and east of Tucson once again with similar concerns of strong to severe outflow winds and areas of blowing dust. The HREF 24/12Z run has a decently sized area of 10% chance for 50 kts. This generally translates to a stronger wind day. Outside of the storm/shower chances, the hot temperatures continue this afternoon into tomorrow, with an Extreme Heat Warning in place. Moderate to Major HeatRisk will remain through Friday, with a decrease to Minor HeatRisk this weekend into early next week as a dry low pressure system passes to the north of the area. This system will increase southwest winds as early as Friday afternoon, with the stronger winds expected on Saturday and Sunday. The combination of the dry conditions and strong winds this weekend leads to near to critical fire weather conditions each afternoon and evening, leading to the issuance of a Fire Weather Watch this weekend (more in the fire weather section). Once this low pressure system passes, the high pressure system to the east will slowly begin to move westward early to mid next week, bringing back moisture and the potential for increased storm activity. && .AVIATION... Valid through 26/00Z. SCT clouds at 12k-15k ft AGL and SCT-BKN AOA 20k ft AGL mainly from Tucson south and eastward thru the forecast period. Isolated -SHRA/-TSRA south and east of KTUS will be possible now thru roughly 25/04Z. Confidence is low in a storm impacting an airport, but the best chances will be at KOLS and KDUG. Strong outflow winds 30-40 kts will be possible in the vicinity of storms. Otherwise SFC winds WLY-NWLY at 8-14 kts with ocnl gusts to 20-25 kts this afternoon and evening. At other times winds will be variable in direction at less than than 8 kts. Aviation discussion not updated for TAF amendments. && .FIRE WEATHER... Isolated thunderstorms south and east of Tucson possible today and Thursday, slight chance in the White Mountains Friday, with dry conditions returning over the weekend. High temperatures will be several degrees above normal through Friday, resulting in moderate to major HeatRisk. Sustained wind speeds will generally be 15 mph or less today, except for the lower elevations of Graham county where stronger speeds of 15-20 mph are expected. Afternoon and early evening gusts to 25-30 mph are expected areawide due to the strong surface heating. Any thunderstorms that develop Wednesday though Friday will have the potential to have wind gusts to 40+ mph. Minimum relative humidity levels will be in the 10-20 percent range with areas along the international border on the higher end of that range. Southwest winds increase Thursday afternoon in advance of a system moving to our north, with near critical fire weather conditions Friday through Sunday. Saturday and Sunday continue to appear to be the breeziest days with some locations seeing brief Red Flag conditions in the afternoon and evening, thus a Fire Weather Watch has been issued for areas Sells eastward. Southwest winds of 15-25 mph and gusts to 35-40 mph are expected Saturday and Sunday afternoon/evenings. && .TWC WATCHES/WARNINGS/ADVISORIES... Extreme Heat Warning until 8 PM MST Thursday for AZZ504>507- 509. Fire Weather Watch from Saturday morning through Sunday evening for AZZ150>154. && JT Visit us on Facebook, X, YouTube, and at weather.gov/Tucson
In the hours before
Local storm report, Jun 24, 2:45 PM MST, 1 hour 50 minutes before
Preliminary Local Storm Report
National Weather Service Tucson AZ
245 PM MST Wed Jun 24 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0233 PM Hail 1 W Sierra Vista 31.57N 110.35W
06/24/2026 E0.70 Inch Cochise AZ Public
Dime sized hail reported by public.
&&
TGD/MNVC/MSALocal storm report, Jun 24, 3:15 PM MST, 1 hour 20 minutes before
Preliminary Local Storm Report
National Weather Service Tucson AZ
315 PM MST Wed Jun 24 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0250 PM Hail 2 WNW Sierra Vista 31.57N 110.35W
06/24/2026 E1.25 Inch Cochise AZ Other Federal
Half-dollar sized hail reported by Fort
Huachuca.
&&
TGD/MNVC/MSAThe office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 24, 1:19 PM MST | Fire Weather Watch | TWC | Cochise, Graham, Greenlee, Pima, Pinal, Santa Cruz | 12 hr |
| Jun 24, 1:41 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 49 min |
| Jun 24, 2:21 PM MST | Flash Flood Warning | TWC | Cochise | 3 hr |
| Jun 24, 2:28 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 47 min |
| Jun 24, 3:53 PM MST | Areal Flood Advisory | TWC | Cochise | 2 hr |
| Jun 24, 4:12 PM MST | Areal Flood Advisory | TWC | Cochise | 2 hr |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.