Alert archive / Arizona / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 73, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Jul 28, 2026, 12:59 AM MST for Graham County, Arizona. It was in force for 46 min. 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
- Jul 28, 2026, 12:59 AM MST (07:59 UTC)
- Expired
- Jul 28, 2026, 1:45 AM MST
- In force
- 46 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Graham County, AZ
The radar
The Tucson radar (KEMX), 143 km from the middle of the area, began a volume at 08:00 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 |
|---|---|---|---|
| Jul 28, 12:59 AM MST | TSTM WND GST 61 | 4 Ene Safford, AZ | ASOS station KSAD measured a 61 mph wind gust. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 0 minutes after it went out.
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
Flgstf/Belemont, AZ (KFGZ), launched 00:00Z, 8.0 hours before the alert went out and 307 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
- 769 J/kg
- Mixed-layer CIN
- -24 J/kg
- Mixed-layer LCL
- 2092 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- -23 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.6
The text
As transmitted.
314 WUUS55 KTWC 280759 SVRTWC AZC009-280845- /O.NEW.KTWC.SV.W.0073.260728T0759Z-260728T0845Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Tucson AZ 1259 AM MST Tue Jul 28 2026 The National Weather Service in Tucson has issued a * Severe Thunderstorm Warning for... Central Graham County in southeastern Arizona... * Until 145 AM MST. * At 1259 AM MST, a severe thunderstorm was located 15 miles northwest of Thatcher, moving west at 20 mph. HAZARD...60 mph wind gusts and small hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Safford, Thatcher, Solomon, San Jose, Safford Regional Airport, Pima, Bylas, Central and Fort Thomas. This includes the following highways... Route 191 near mile marker 120. Route 70 between mile markers 297 and 346. PRECAUTIONARY/PREPAREDNESS ACTIONS... Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing damaging winds. && LAT...LON 3311 10978 3281 10953 3282 10997 3312 11017 TIME...MOT...LOC 0759Z 99DEG 15KT 3303 10986 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ CWR
1 follow-up statement
982 WWUS55 KTWC 280839 SVSTWC Severe Weather Statement National Weather Service Tucson AZ 139 AM MST Tue Jul 28 2026 AZC009-280849- /O.EXP.KTWC.SV.W.0073.000000T0000Z-260728T0845Z/ Graham AZ- 139 AM MST Tue Jul 28 2026 ...SEVERE THUNDERSTORM WARNING WILL EXPIRE AT 145 AM MST FOR CENTRAL GRAHAM COUNTY... The storm which prompted the warning has weakened below severe limits, and has exited the warned area. Therefore, the warning will be allowed to expire. && LAT...LON 3311 10978 3281 10953 3282 10997 3312 11017 TIME...MOT...LOC 0759Z 99DEG 15KT 3303 10986 $$ AWH
What forecasters said that day
The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Jul 27, 12:30 PM MST, 12 hours 29 minutes earlier.
Area forecast discussion, Jul 27, 12:30 PM MST, 12 hours 29 minutes before
Area Forecast Discussion National Weather Service Tucson AZ 1230 PM MST Mon Jul 27 2026 .SYNOPSIS... Expect daily afternoon and evening showers and thunderstorms this week with day to day variability in coverage and strength. High temperatures will be 2-6 degrees above normal through the middle of this week then warm to 7-12 degrees above normal late this week into next weekend. && .DISCUSSION... Cumulus and towering cumulus are beginning to form along the terrain. Suitable moisture is in place with satellite derived PWATs around 1.0 to 1.75 inches, higher values Sells westward. High pressure overhead is centered over New Mexico and western TX today leading to southeast flow in the mid levels helping to pull moisture in from the Gulf of California. As surface heating continues today and low level drying occurs, an inverted V sounding will develop leading to DCAPE values around 1500 to 1700 J/kg. There will be a fair bit of mid-level shear as well, 25 to 35 kts, with decent updraft helicity thus there is the potential for strong, longer- lived storms to develop. Storms today will be focused to the Arizona/ Mexico international border and the Arizona/ New Mexico border. Stronger storms more likely be located along the Arizona/ Mexico international border. CAMs continue to have storms beginning to develop between 12 and 2 pm, initially on the higher terrain then moving west to northwest. Tomorrow, most of the ingredients seen today will be present. Mid level shear will remain elevated at 25 to 35 kts, DCAPE of 1500-1800 J/kg, and PWATs between 1.0 to 1.6 inches. Storms again will be focused to the Arizona/ Mexico international border and the the Arizona/ New Mexico border. Wednesday, chances for storms and showers begin to diminish as the high pressure center begins to move westward. By Thursday, high temperatures will be 7 to 12 degrees above normal leading to Major to Extreme HeatRisk. Therefore, an Extreme Heat Warning has been issued for most of southern Arizona (with the exception of the higher terrain) from Thursday morning through Sunday evening. At this level of HeatRisk, everyone should take proper precautions to prepare for the heat as anyone is at risk for heat related illnesses if not staying hydrated or cool. Friday and Saturday look to be the hottest days in the forecast during this stretch, with a 55% to 65% chance of 110 degrees for locales Tucson westward both days. Chances for storms and showers returns early next week as the center of high pressure oscillates eastward. && .AVIATION...Valid though 30/00Z FEW to SCT clouds AOA 10-12k ft AGL KTUS eastward becoming SCT to BKN 8-12k ft AGL aft 28/00Z. Isold to sct TSRA will be possible south and east of KTUS starting around 27/20Z through 28/04Z. KDUG and KOLS terminals will be most at risk of being impacted by TSRA. Any thunderstorm may produce wind gusts in excess of 40 kts. Outside of storms surface winds variable less than 8 kts this morning becoming NWLY 6-10 kts with occasional gusts this afternoon and evening. Aviation discussion not updated for TAF amendments. && .FIRE WEATHER... High temperatures will remain above normal this week. Expect daily chances of afternoon and evening showers and thunderstorms with day-to-day variability on coverage of storms. Any thunderstorm will bring a threat of severe, erratic wind gusts as well as brief heavy rainfall and an isolated threat of flash flooding. Minimum relative humidity values will be 20-40 percent in the lower deserts through at least mid-week. Winds this weekend will mainly be light and under 12 mph outside of thunderstorms. && .TWC WATCHES/WARNINGS/ADVISORIES... Extreme Heat Warning from 8 PM Saturday to 8 PM MST Sunday for AZZ501>509. && Malarkey Visit us on Facebook, X, YouTube, and at weather.gov/Tucson
In the hours before
Local storm report, Jul 27, 9:57 PM MST, 3 hours 2 minutes before
Preliminary Local Storm Report
National Weather Service Tucson AZ
957 PM MST Mon Jul 27 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0933 PM Tstm Wnd Gst 3 N Bisbee 31.44N 109.91W
07/27/2026 M61 MPH Cochise AZ Mesonet
Mesonet station CW7706 Bisbee.
&&
DVSLocal storm report, Jul 27, 10:05 PM MST, 2 hours 54 minutes before
Preliminary Local Storm Report
National Weather Service Tucson AZ
1005 PM MST Mon Jul 27 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1003 PM Rain 3 N Bisbee 31.44N 109.92W
07/27/2026 M1.46 Inch Cochise AZ Public
Rain gauge measured 1.46 inches of rainfall
in 30 minutes in Bisbee.
&&
DVSLocal storm report, Jul 27, 10:11 PM MST, 2 hours 48 minutes before
Preliminary Local Storm Report
National Weather Service Tucson AZ
1011 PM MST Mon Jul 27 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1005 PM Rain 11 SE Sierra Vista 31.45N 110.18W
07/27/2026 M0.95 Inch Cochise AZ Trained Spotter
Spotter reported 0.95 inches of rain in 20
minutes.
&&
AHLocal storm report, Jul 27, 10:15 PM MST, 2 hours 44 minutes before
Preliminary Local Storm Report
National Weather Service Tucson AZ
1015 PM MST Mon Jul 27 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0956 PM Rain 4 NNW Bisbee 31.46N 109.94W
07/27/2026 M1.18 Inch Cochise AZ Mesonet
Mesonet station BTAA3 Bisbee Tunnel.
&&
DVSLocal storm report, Jul 27, 10:34 PM MST, 2 hours 25 minutes before
Preliminary Local Storm Report
National Weather Service Tucson AZ
1034 PM MST Mon Jul 27 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1033 PM Rain 12 SE Sierra Vista 31.44N 110.18W
07/27/2026 M3.00 Inch Cochise AZ Trained Spotter
Trained Spotter reported 3 inches over the
past hour ending at 1030 PM MST.
&&
DVSThe office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 6:09 PM MST | Areal Flood Advisory | TWC | Pima | 3 hr |
| Jul 27, 6:39 PM MST | Severe Thunderstorm Warning | TWC | Pima | 51 min |
| Jul 27, 6:40 PM MST | Flash Flood Warning | TWC | Pima | 2 hr |
| Jul 27, 8:39 PM MST | Flood Watch | TWC | Cochise, Graham, Pima, Santa Cruz | 8 hr |
| Jul 27, 9:33 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 42 min |
| Jul 27, 9:57 PM MST | Flash Flood Warning | TWC | Cochise | 3 hr |
| Jul 27, 10:11 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 49 min |
| Jul 27, 10:31 PM MST | Flash Flood Warning | TWC | Cochise | 2 hr |
| Jul 27, 11:02 PM MST | Flash Flood Warning | TWC | Santa Cruz | 106 min |
| Jul 27, 11:33 PM MST | Severe Thunderstorm Warning | TWC | Santa Cruz | 42 min |
| Jul 28, 1:26 AM MST | Severe Thunderstorm Warning | TWC | Cochise | 49 min |
| Jul 28, 2:18 AM MST | Severe Thunderstorm Warning | TWC | Pima | 42 min |
| Jul 28, 7:54 AM MST | Areal Flood Advisory | TWC | Cochise | 3 hr |
| Jul 28, 11:22 AM MST | Areal Flood Warning | TWC | Cochise | 6 hr |
| Jul 28, 1:33 PM MST | Severe Thunderstorm Warning | TWC | Greenlee | 42 min |
| Jul 28, 2:10 PM MST | Flash Flood Warning | TWC | Greenlee | 3 hr |
Nearby
Severe Thunderstorm Warnings in Arizona, 2026Every severe thunderstorm 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.