Prior to cloud and thunderstorm development that afternoon, a dust devil formed during the morning hours, causing damage and one injury in Sierra Vista.
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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.
The episode as NWS TWC wrote it up.
Prior to cloud and thunderstorm development that afternoon, a dust devil formed during the morning hours, causing damage and one injury in Sierra Vista.
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 Jun 7, 10:05 AM MST, 25 minutes earlier.
Area Forecast Discussion National Weather Service Tucson AZ 1005 AM MST Thu Jun 7 2018 .SYNOPSIS...Isolated thunderstorms may occur over Cochise County this afternoon and for areas east of Tucson Saturday. Otherwise, dry conditions with seasonably hot temperatures into this weekend. There is potential for increased moisture next week raising the chance for additional afternoon and evening thunderstorms. && .DISCUSSION...No changes to inherited forecast. && .AVIATION...Valid through 08/18Z. Clear skies or few clouds above 20k ft AGL west of KTUS through Friday morning. KTUS vicinity eastward few to scattered clouds at 10k-15k ft AGL into this evening then mainly clear skies late tonight into Friday morning. Isolated -TSRA/-SHRA this afternoon and evening east of a KSAD-KFHU line. Surface wind swly/wly 10-15 kts with gusts near 25 kts. Surface wind variable in direction less than 12 kts at other times. Aviation discussion not updated for TAF amendments. && .FIRE WEATHER...Dry conditions will prevail for much of the area through Monday. The exception is a slight chance of thunderstorms across far southeast Arizona during the afternoon today and again on Saturday. Thunderstorm coverage may increase significantly by Tuesday of next week. Dry lightning and gusty outflow winds will be a concern with any storms that do develop. Outside of thunderstorms, 20-foot southwest winds will be around 15 mph this afternoon and again on Sunday. Otherwise, winds will be less than 15 mph except for some afternoon gustiness due to strong daytime heating. && .PREV DISCUSSION /300 AM MST/...Looks like it was an interesting Wednesday afternoon over Cochise County with our first Severe Thunderstorm Warning of the season issued. The forecast for this afternoon is a bit more problematic. Currently, dewpoints are significantly lower at this time and looking at that alone there would be no concern. That said, GFS, NAM and their convective allowing UA WRF versions point to an increase in moisture from the south later this morning allowing for some convective development. Looking at their surface fields and model soundings the southerly flow develops around sunrise 2-6kft above ground level near the border with moisture rising thereafter through late morning then drying as we mix it out in the afternoon with the flow becoming more westerly. The NAM is the most aggressive and has been leaned away from although last nights UA WRFNAM is fun to look at with storms developing near the Rincons (supported by the National Blend as well). The GFS and SREF have the moisture increase, just not as significant or extensive. With the lack of observations south of the border, not much real data to go on although GOES16 does show higher PW values slowly creeping north over Mexico. For now, I decided to add a slight chance of afternoon T-storms to the SE half of Cochise County, a smaller area than yesterday and see how the morning progresses with respect to the moisture advection. Outside of that, temperatures rather similar or a degree or two warmer than yesterday with plenty of sunshine. A light westerly breeze is expected as well. At this time, Friday looks to be dry area wide although moisture continues to lurk just south of the border with storms forming over the northern Sierra Madre Occidentals. Will need to keep an eye on potential moisture surging into the SE part of the forecast area. We do expected some northward moisture creep Saturday and we have a slight chance of thunderstorms in the forecast for areas east of Tucson and that still looks good at this time. Remaining quite warm with highs remaining 4-8 degrees warmer than normal. Sunday should trend drier thanks to a system passing by well to the north and westerly flow shunting moisture off to the east and south. Heights remain fairly high for continued above normal temperatures. Late Monday onward models continue to point to more of a south to southeast flow developing with moisture gradually shifting northward to varying degrees. It does not appear to be a slam dunk as models have been varying on the degree of moisture transport but it should be good enough for periods of convection across parts of southeast Arizona next week. && .TWC WATCHES/WARNINGS/ADVISORIES...None. && Francis PREVIOUS DISCUSSION...Cerniglia Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
The national radar mosaic for the moment the first event began.
1 dust devil. Local standard time, as filed.
A dust devil damaged several tents at a farmers market in Sierra Vista. One person suffered a broken wrist and hand when a tent landed on her hand.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2018Every state in 2018This day in weather historyWarnings in Arizona, June 2018
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: 782361.