Arizona, 2022

Heat in Arizona, May 26, 2022

May 26, 2022 · NWS TWC · 4 events in 4 counties and zones

Hot temperatures in the upper 90s to low 100s were experienced in the lower elevations of southeast Arizona on May 26-27. The Pima County Medical Examiner confirmed that heat was the primary cause of death for seven individuals.

Where it happened

Every event with a place to put it; 4 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

Open the live radar over this ground

The toll

Deaths
7
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
4

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS TWC wrote it up.

Hot temperatures in the upper 90s to low 100s were experienced in the lower elevations of southeast Arizona on May 26-27. The Pima County Medical Examiner confirmed that heat was the primary cause of death for seven individuals. Four were found in the desert, two on the Tohono O'odham Nation, and two in Cochise County. The other three victims were elderly individuals in Tucson.

What forecasters said that day

The local office's own words before the first event, 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 the first event at May 26, 2:40 AM MST, 8 hours 20 minutes earlier.

Area forecast discussion, May 26, 2:40 AM MST, 8 hours 20 minutes before
Area Forecast Discussion
National Weather Service Tucson AZ
240 AM MST Thu May 26 2022

.SYNOPSIS...Dry weather with above normal temperatures will be with
us for the remainder of the work week and into the weekend.
Thereafter, as a weather system approaches, afternoon winds will
increase this weekend into early next week with temperatures briefly
dropping to below normal levels early next week.

&&

.DISCUSSION...Satellite imagery this morning showed a clear sky
over Arizona under high pressure aloft. Highs today will be 3-6
degrees warmer than yesterday. Although the ridge axis moves east
highs Friday will be similar to what occurs today. A few locals
will be near highs today and tomorrow.

Cooler high temperatures this weekend into early next week as a
storm system moves into the PacNW. This system will tighten the
pressure gradient for strong gusty winds across the area Sunday
and Monday. May eventually need some fire headlines on those two
days. Temperatures rebound back above normal next Wednesday.

&&

.AVIATION...Valid through 27/12Z.
Clear skies/SKC conditions thru the forecast period. SFC wind
generally less than 12 kts thru the forecast period, with a SWLY/WLY
direction during the afternoon/early evening hours and variable in
direction at other times. A few afternoon/early evening gusts to
between 20-25 kts. Aviation discussion not updated for TAF
amendments.

&&

.FIRE WEATHER...Dry conditions will continue the next 7 days, with
above normal temperatures prevailing through Saturday. Afternoon
gustiness is expected through Friday due to strong daytime heating.
As a weather system approaches this weekend into early next week, an
increase in wind speeds is expected. Some locations east of Tucson
may see winds strong enough to warrant fire weather headlines Sunday
and Monday. Slightly cooler temperatures are expected late in the
weekend into early next week, with temperatures briefly lowering to
below normal levels on Tuesday.

&&

.CLIMATE...A few places will be approaching record highs today
and tomorrow.

DATE                         May 26           May 27
                          FCST RCD/YR      FCST RCD/YR
AJO                       102 104/1951
SAFFORD AG STATION        102 103/1949     104 104/1951
SIERRA VISTA FD            96  97/1984
TOMBSTONE                  97 100/1974      98 101/1958

Memorial Day climate tidbit for Tucson. The last time rain was
recorded at the airport on Memorial Day was in 1992 (0.04").

&&

.TWC WATCHES/WARNINGS/ADVISORIES...None.

&&

Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

4 heat. Local standard time, as filed.

Heat, Tohono O Odham Nation

When
May 26, 11:00 AM MST to 8:00 PM MST
Where
Tohono O Odham Nation forecast zone
Deaths
2 direct, 0 indirect
Reported by
County Official
Coordinates
32.501, -111.567 (the zone’s center; the record gives no point)

Hot temperatures 5 to 10 degrees above normal, around 100 degrees, were experienced on the Tohono O'odham Nation on May 26 causing the Moderate Heat Risk category to be reached. The Pima County Medical Examiner confirmed that heat was the primary cause of death for two individuals found in the desert, one north of San Miguel and another east of Sells.

Heat, Upper San Pedro River Valley

When
May 26, 11:00 AM MST to 8:00 PM MST
Where
Upper San Pedro River Valley forecast zone
Deaths
1 direct, 0 indirect
Reported by
County Official
Coordinates
32.109, -110.569 (the zone’s center; the record gives no point)

Hot temperatures 5 to 10 degrees above normal, in the upper 90s, were experienced in southwest Cochise County on May 26 causing the Moderate Heat Risk category to be reached. The Pima County Medical Examiner confirmed that heat was the primary cause of death for one individual found in the desert northwest of Naco.

Heat, Eastern Cochise County Below 5000 Feet

When
May 26, 11:00 AM MST to 8:00 PM MST
Where
Eastern Cochise County Below 5000 Feet forecast zone
Deaths
1 direct, 0 indirect
Reported by
County Official
Coordinates
31.880, -109.751 (the zone’s center; the record gives no point)

Hot temperatures 5 to 10 degrees above normal, in the upper 90s, were experienced in southeast Cochise County on May 26 causing the Moderate Heat Risk category to be reached. The Pima County Medical Examiner confirmed that heat was the primary cause of death for one individual found in the desert southwest of McNeal.

Heat, Tucson Metro Area

When
May 26, 11:00 AM MST to 8:00 PM MST
Where
Tucson Metro Area forecast zone
Deaths
3 direct, 0 indirect
Reported by
County Official
Coordinates
32.097, -111.790 (the zone’s center; the record gives no point)

Hot temperatures 5 to 10 degrees above normal, between 100 and 104 degrees, were experienced in the Tucson Metro May 26-27 causing the Moderate Heat Risk category to be reached. The Pima County Medical Examiner confirmed that heat was the primary cause of death for three elderly individuals.

The people who died

As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.

EventDateAgeSexWhereKind
Heat, Tohono O Odham Nation2022-05-2621FemaleOutside/Open AreasDirect
Heat, Tohono O Odham Nation2022-05-2619MaleOutside/Open AreasDirect
Heat, Upper San Pedro River Valley2022-05-2622MaleOutside/Open AreasDirect
Heat, Eastern Cochise County Below 5000 Feet2022-05-2620MaleOutside/Open AreasDirect
Heat, Tucson Metro Area2022-05-2781MaleOutside/Open AreasDirect
Heat, Tucson Metro Area2022-05-2680FemalePermanent HomeDirect
Heat, Tucson Metro Area2022-05-2684MalePermanent HomeDirect

What these are

Heat
Heat below excessive heat criteria that still caused deaths, injuries or significant impacts.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Arizona in 2022Every state in 2022This day in weather historyWarnings in Arizona, May 2022

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1033604, 1033605, 1033606, 1131611.