Alert archive / Arizona / Flash Flood Warnings in 2026

Flash Flood Warning 9, NWS Tucson, AZ

June 24, 2026Cochise County, Arizona

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

TimeReportWhereRemark
Jun 24, 5:05 PM MSTRAIN 2.5512 Se Sierra Vista, AZTotal 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.

Skew-T log-pSkew-T log-p diagram, Phoenix, AZ at 12:00Z on 2026-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Phoenix, AZ at 12:00Z on 2026-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -5 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
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

Open this sounding in Storm Lab

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

$$

GLZ
2 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

$$

GLZ
991 
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

$$

GLZ

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 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

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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/MSA
Local 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/MSA

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 24, 1:19 PM MSTFire Weather WatchTWCCochise, Graham, Greenlee, Pima, Pinal, Santa Cruz12 hr
Jun 24, 1:41 PM MSTSevere Thunderstorm WarningTWCCochise49 min
Jun 24, 2:21 PM MSTFlash Flood WarningTWCCochise3 hr
Jun 24, 2:28 PM MSTSevere Thunderstorm WarningTWCCochise47 min
Jun 24, 3:53 PM MSTAreal Flood AdvisoryTWCCochise2 hr
Jun 24, 4:12 PM MSTAreal Flood AdvisoryTWCCochise2 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.