Scattered thunderstorms moved northeast across Cochise County during the afternoon. One storm produce heavy rain that caused localized flash flooding.
Every event with a place to put it. Tap one for its entry below.
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.
Scattered thunderstorms moved northeast across Cochise County during the afternoon. One storm produce heavy rain that caused localized flash flooding.
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 Sep 2, 8:21 AM MST, 5 hours 54 minutes earlier.
Area Forecast Discussion National Weather Service Tucson AZ 821 AM MST FRI SEP 2 2016 .SYNOPSIS...A drying trend will commence across the region today with thunderstorm chances mainly to the east of Tucson. Dry conditions will prevail this holiday weekend with the exception of the white mountains where a slight chance of showers and thunderstorms continue Saturday. Daytime temperatures will remain above normal through this weekend. Thereafter, there is the potential for tropical moisture to move into the area for the middle of next week. && .DISCUSSION...The latest satellite imagery shows partly to mostly cloudy skies, scattered to broken clouds, across much of southeast Arizona this morning. The 12z TWC raob/sounding indicated 1.40" of Precipitable Water, with the Composite Sounder DPI Total PW Imagery showing values ranging from around 1" to 1.6" across the southern half of Arizona attm. The sounder imagery does indicate some drier air (~0.70") over northern Sonora which will begin to mix into the forecast area today as mid/upper level southwesterly flow strengthens in response to a developing trough along the west coast. Although this drier air is expected to begin to advect into the forecast area today, there will still be enough moisture for isolated to scattered showers and thunderstorms...mainly east of Tucson. Expect to see first shower/thunderstorm development by late morning, continuing through the afternoon, and into the early evening hours tonight before dissipating. Shower/storm movement will be to the northeast at 10-15 mph. Ongoing forecast package looks to be in good shape. For more information on the latter periods of the forecast, please refer to the Prev Discussion section below. No updates. && .AVIATION...VALID THRU 03/15Z. Scattered -TSRA/-SHRA mostly east of KTUS to the New Mexico border this afternoon and evening. Otherwise, SKC to SCT clouds around 12k ft msl west of KTUS into Saturday morning. KTUS vicinity eastward, a few to occasionally OVC clouds around 10k-15k ft msl through the period. Surface wind will follow diurnal trends mainly less than 10 kts. Aviation discussion not updated for TAF amendments. && .FIRE WEATHER...Scattered thunderstorms will occur mostly east of Tucson this afternoon and evening. A strong drying trend will then commence Saturday through Monday. A slight chance of thunderstorms continues mainly across the White Mountains Saturday followed by dry conditions Sunday into Labor Day. Increasing moisture from the south is expected to occur Tuesday into Thursday. This should translate into a return of scattered showers and thunderstorms. 20-foot winds will generally be less than 15 mph today, then some elevated south to southwest winds Saturday into Monday. && .PREV DISCUSSION...Latest IR satellite imagery shows mainly clear skies south and west of Tucson with partly to mostly cloudy skies to the northeast of Tucson. The mid/upper level pattern flow pattern is now changing across the region and becoming more westerly as a longwave trough starts to establish itself across the west coast. This is advecting drier air into the forecast area today, but there will still remain enough moisture for isolated to low end scattered showers and thunderstorms...mainly to the east of Tucson. As drier air continues to move in this weekend, dry conditions will prevail with the exception of the White Mountains on Saturday where a slight chance of showers and thunderstorms will continue. Meanwhile, slightly above normal temperatures will continue through the holiday weekend. There is plenty of uncertainty beyond the holiday weekend into the middle of next week as our attention starts to turn towards the tropics. There remains a wide gamut of solutions for next week with a possible tropical cyclone across the eastern Pacific. The 02/00Z ECMWF remains quite robust tracking a tropical cyclone to the west of the Baja peninsula next week which would result in a strong surge of moisture for our area. Meanwhile, for example, the 02/00Z GFS and Canadian are drier for our region as tropical cyclone initiation and track remains weaker and/or farther south. Lots of uncertainty in the ensemble members as well. Made only minor changes to the forecast with slight chance to chance PoPs starting Tuesday and continuing through Thursday but confidence remains below normal. && .TWC WATCHES/WARNINGS/ADVISORIES...None. && Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
The Tucson radar (KEMX), 56 km away, was scanning. The volume nearest the first event began at 21:15 UTC.
1 flash flood. Local standard time, as filed.
Thunderstorms produced brief heavy rain that caused 6 to 12 inches of water to flow over Dragoon Road and Old Ranch Road.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2016Every state in 2016This day in weather historyWarnings in Arizona, September 2016
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: 659805.