8 inches with weak steering flow. Thunderstorms that developed were very slow moving with rainfall amounts in excess of one inch in some locations.
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.
Precipitable water values in Southeast Arizona were between 1.5 and 1.8 inches with weak steering flow. Thunderstorms that developed were very slow moving with rainfall amounts in excess of one inch in some locations. Flash flooding occurred in both Pima and Greenlee Counties. Heavy rains in Nogales, Sonora caused flooding in Nogales, AZ which closed the Deconcini Port of Entry for the first time in history.
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 Jul 7, 9:06 AM MST, 3 hours 44 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 906 AM MST MON JUL 7 2014 .SYNOPSIS...A WEAK DISTURBANCE WILL HELP ENHANCE THE CHANCES OF THUNDERSTORMS EARLY THIS WEEK WITH AN ELEVATED CHANCE OF THUNDERSTORMS TODAY AND TUESDAY. SOME STORMS WILL GENERATE HEAVY RAINFALL AND STRONG GUSTY WINDS. THEREAFTER...WE SHOULD KEEP ENOUGH MOISTURE IN THE AREA FOR A CHANCE OF THUNDERSTORMS INTO NEXT WEEKEND. && .DISCUSSION...SCATTERER SHOWERS AND A FEW THUNDERSTORMS CONTINUED THIS MORNING ACROSS MAINLY COCHISE AND EASTERN SANTA CRUZ COUNTIES. SHOWERS WERE ALREADY STARTING TO DEVELOP FARTHER WEST OF THIS AREA...GENERALLY WEST TO SOUTHWEST OF TUCSON. SEVERAL INGREDIENTS WILL BE IN PLACE ACROSS SOUTHEAST ARIZONA TODAY THAT SUPPORT MORE ORGANIZED THUNDERSTORM ACTIVITY COMPARED TO YESTERDAY. THE CURRENT FORECAST WAS HANDLING THIS THINKING WELL...SO NO UPDATES NECESSARY THIS MORNING. PLEASE REFER TO THE PREVIOUS DISCUSSION IN THIS PRODUCT FOR MORE DETAILS ON THE FORECAST. && .AVIATION...SCTD -SHRA/-TSRA WILL BE AROUND THRU 08/04Z WITH LCL MVFR CONDS NR +TSRA. CLOUD BASES MOSTLY IN THE 8-13 KFT AGL WITH LCLY LWR CONDS NEAR +TSRA. SURFACE WINDS MOSTLY LESS THAN 10 KTS...EXCEPT NR TSRA OUTFLOWS. AVIATION DISCUSSION NOT UPDATED FOR TAF AMENDMENTS. && .FIRE WEATHER...TODAY INTO TUESDAY ARE EXPECTED TO BE VERY ACTIVE WITH SCATTERED TO WIDESPREAD SHOWERS AND THUNDERSTORMS ACROSS SOUTHEAST ARIZONA. WITH THE ATMOSPHERE VERY MOIST...LOCALIZED HEAVY RAINS ARE POSSIBLE BOTH DAYS. DAILY CYCLE OF SHOWERS AND THUNDERSTORMS WILL BE AROUND WEDNESDAY INTO NEXT WEEKEND. WINDS THROUGH THE NEXT SEVEN DAYS WILL BE GENERALLY LESS THAN 15 MPH WITH THE EXCEPTION OF STRONG GUSTY OUTFLOW WINDS UNDER AND AROUND ANY THUNDERSTORMS. && .PREV DISCUSSION...A CLUSTER OF SHOWERS WITH EMBEDDED THUNDERSTORMS THROUGH EASTERN AREAS IN DEFORMATION REGION AHEAD OF WEAK IMPULSE CARVING DOWN THE BACK SIDE OF THE HIGH. COMBINED WITH ELEVATED MOISTURE...(PRECIPITABLE WATER VALUES IN THE 1.45 TO 1.7 INCH RANGE)...THIS FEATURE AND THE ACCOMPANYING INCREASING EASTERLY FLOW WILL COMBINE TO ENHANCE OUR THUNDERSTORM COVERAGE TODAY AND TUESDAY. ORGANIZED OUTFLOWS WITH STRONG GUSTY WINDS A CONCERN ALONG WITH LOCALLY HEAVY RAINFALL ASSOCIATED WITH STRONGEST STORMS. WE WILL ALSO PROBABLY LOSE SOME OF OUR NORMAL DIURNAL TRENDS AS STORMS TEND TO BOTH LINGER OVERNIGHT AND INITIATE NEW ACTIVITY ALONG PREVIOUS OUTFLOWS AND RESIDUAL BOUNDARIES. WE SHOULD TREND DOWN BY WEDNESDAY OR THURSDAY COMPARED TO EARLIER IN THE WEEK AS WE SEE A DOWN DAY OR TWO AFTER ALL THE ACTIVITY AND WEAK SUBSIDENCE BEHIND THE FEATURE AS IT ROTATES NORTHWEST OF US. PREVIOUSLY WE WERE THINKING WE MIGHT DRY OUT A BIT AS WELL...BUT LATEST ECMWF TRENDS KEEP SOUTHEAST ARIZONA WITH A DECENT SUPPLY OF MOISTURE INTO NEXT WEEKEND. PERHAPS NOT QUITE TO CURRENT LEVELS WHICH ARE RUNNING AROUND 150 PERCENT OF CLIMO...BUT PROBABLY STILL ENOUGH TO DO THE JOB. AFTER THE OBLIGATORY RELATIVELY DOWN DAY OR TWO WE SHOULD AT LEAST HOP BACK TO SOMETHING NEAR NORMAL BY FRIDAY OR SATURDAY. && .TWC WATCHES/WARNINGS/ADVISORIES...NONE. && VISIT US ON FACEBOOK...TWITTER...YOUTUBE...AND AT WEATHER.GOV/TUCSON
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 1129 AM MST MON JUL 7 2014 AZZ503-507-513-071915- DRAGOON/MULE/HUACHUCA AND SANTA RITA MOUNTAINS INCLUDING BISBEE/CANELO HILLS/MADERA CANYON AZ-UPPER SAN PEDRO RIVER VALLEY INCLUDING SIERRA VISTA/BENSON AZ-UPPER SANTA CRUZ RIVER AND ALTAR VALLEYS INCLUDING NOGALES AZ- 1129 AM MST MON JUL 7 2014 ...SIGNIFICANT WEATHER ADVISORY FOR EASTERN SANTA CRUZ COUNTY UNTIL 1215 PM MST... AT 1120 AM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A CLUSTER OF STRONG THUNDERSTORMS WITH SMALL HAIL...HEAVY RAINFALL AND STRONG WINDS FROM NEAR SONOITA SOUTH TO AROUND PATAGONIA. THE GENERAL AREA OF THUNDERSTORMS WAS MOVING SOUTH TO SOUTHEAST AT 15 MPH. SMALL HAIL AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN. LAT...LON 3135 11048 3134 11096 3172 11084 3172 11048 TIME...MOT...LOC 1827Z 313DEG 16KT 3149 11063
The Tucson radar (KEMX), 54 km away, was scanning. The volume nearest the first event began at 19:52 UTC.
4 thunderstorm wind, 3 flash flood. Local standard time, as filed.
NWS employee reported two trees uprooted near Starr Pass. Around the same time, broadcast media reported trees down at Silverbell Rd and Grant Rd.
Heavy rain of over 2 inches in less than one hour fell in Nogales, Sonora, Mexico, causing catastrophic flooding there. Runoff crossing the border combined with brief heavy rain in Nogales, Arizona caused flooding and the closure of the DeConcini Port of Entry until 10 pm MST for the first time in history. Runoff into Nogales Wash burst from manholes into Nogales, Arizona. As the the Nogales Wash emerged above ground, it over-topped its banks and caused street flooding.
Thunderstorm outflow winds flowed into air vents causing a section of drywall to fall into a breezeway, where it struck four people waiting for appointments at an office in a strip mall. Three of the four sustained minor injuries.
Thunderstorm winds uprooted a tree at Three Points.
A metal three-sided hay barn was flattened by thunderstorm winds at an exotic bird sanctuary in Cascabel, AZ.
Very heavy rain in excess of 1.5 inches in a short period of time caused flash flooding in Corona de Tucson. Businesses, homes, and roads were flooded. The fire department was needed to help stalled cars and stranded drivers near Sahuarita Road and Houghton. Sahuarita Road near Alvernon was closed for a short time.
Railroad Wash over-topped its banks onto highway 70 resulting in the road being closed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2014Every state in 2014This day in weather historyWarnings in Arizona, July 2014
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: 519479, 520769, 537905, 525559, 525582, 520795, 520799.