High pressure remained over northern Arizona. Monsoon storms struck again, but with less potency than the previous day.
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.
High pressure remained over northern Arizona. Monsoon storms struck again, but with less potency than the previous day. Only one severe wind report was received, in Santa Cruz County near the international border.
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 4, 2:20 PM MST, 1 hour earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 220 PM MST FRI JUL 4 2014 .SYNOPSIS...SCATTERED TO NUMEROUS THUNDERSTORMS WILL OCCUR AGAIN THIS EVENING. SOME STORMS WILL GENERATE LOCALLY HEAVY RAINFALL AND STRONG GUSTY WINDS. THIS ACTIVITY WILL DECREASE LATE TONIGHT INTO SATURDAY MORNING. THEREAFTER...A CHANCE OF THUNDERSTORMS WILL CONTINUE THIS WEEKEND AND INTO THE UPCOMING WEEK. && .DISCUSSION...SCATTERED SHOWERS AND THUNDERSTORMS WERE OCCURRING GENERALLY SE OF A HANNAGAN MEADOW-SAFFORD-VAIL-TUBAC LINE AT THIS TIME. OTHER ISOLATED SHOWERS WERE ACROSS SE PINAL COUNTY. MOST OF THE SHOWERS/TSTMS AT THIS TIME WERE ADJACENT MOUNTAINS. THE MID- LEVEL STEERING FLOW WILL FAVOR STORM MOTION TOWARD THE NORTH TO NORTHWEST INTO THIS EVENING. THE RUC HRRR HAS HANDLED THE EVOLUTION OF CONVECTIVE ACTIVITY QUITE WELL DURING THE PAST 2-3 HOURS. AT ANY RATE...SCATTERED SHOWERS/TSTMS WILL OCCUR AREA-WIDE THIS EVENING. SLIGHTLY LESSER POPS ARE DEPICTED ACROSS WRN PIMA COUNTY RELATIVE TO ELSEWHERE. ISOLATED SHOWERS/TSTMS WILL THEN PREVAIL LATE TONIGHT INTO SAT MORNING. MOISTURE AND MID-LEVEL STEERING FLOW WILL REMAIN SUFFICIENT SCATTERED TO NUMEROUS SHOWERS/TSTMS SAT AFTERNOON/ EVENING...THEN ISOLATED SHOWERS/TSTMS WILL BE CONFINED MAINLY NEAR MOUNTAINS LATE SAT NIGHT SUN MORNING. 04/12Z GFS/ECMWF WERE FAIRLY SIMILAR WITH DEPICTING DEEPER MOISTURE TO BE ACROSS CENTRAL/ERN SECTIONS SUN. THUS...HAVE CONFIGURED CHANCE-CATEGORY POPS SUN AFTERNOON/EVENING FOR LOCALES EAST AND SOUTH OF TUCSON...WITH ISOLATED SHOWERS/TSTMS FROM TUCSON WWD/NWWD. HIGH PRESSURE ALOFT WILL REMAIN CENTERED OVER THE GREAT BASIN MON-TUE. MEANWHILE...GFS/ECMWF WERE SIMILAR WITH DEPICTING AN INVERTED TROUGH/WEAK UPPER LOW TO MOVE WWD ACROSS THE AREA. HAVE MAINTAINED PREVIOUS OFFICIAL FORECAST SCENARIOS OF INCREASING POPS MON-TUE IN RESPONSE TO THIS UPPER LEVEL FEATURE. SCATTERED TO NUMEROUS SHOWERS/TSTMS TO CONTINUE ACROSS SE AZ WED AFTERNOON/ EVENING. A SOMEWHAT DRIER REGIME MAY ENCROACH UPON THE AREA THUR-FRI... ESPECIALLY ACROSS WRN SECTIONS. GFS/ECMWF SHUNTED THE AXIS OF DEEPER MOISTURE EWD INTO WRN NEW MEXICO. THE ECMWF WAS MORE PRONOUNCED WITH THIS DRIER SCENARIO VERSUS THE GFS. SOME DRYING MAY OCCUR DURING THE LATTER PART OF THE UPCOMING WEEK. HOWEVER...AM NOT YET INCLINED TO BELIEVE THESE SOLUTIONS FULLY...AT LEAST AT THIS TIME. THUS...HAVE OPTED FOR A CHANCE OF AFTERNOON/EVENING SHOWERS AND THUNDERSTORMS EAST AND SOUTH OF TUCSON THUR-FRI...WITH LESSER COVERAGE OF SHOWERS/ TSTMS FROM TUCSON WWD/NWWD. ASIDE FROM SOME WARMING SUN-MON... DAYTIME TEMPS WILL GENERALLY AVERAGE A FEW DEGS BELOW NORMAL INTO NEXT WEEK. && .AVIATION...VALID THRU 08/00Z. SCATTERED TO NUMEROUS TSRA/SHRA WILL OCCUR INTO THIS EVENING FOLLOWED BY ISOLATED -TSRA/-SHRA LATE TONIGHT INTO SATURDAY MORNING. SCATTERED TO NUMEROUS TSRA/SHRA WILL RETURN SATURDAY AFTERNOON. EXPECT MVFR VISIBILITIES WITH +TSRA...AS WELL AS POTENTIAL WIND GUSTS TO ABOUT 50 KTS. OTHERWISE...CLOUD DECKS WILL BE AROUND 8-15K FT AGL. AVIATION DISCUSSION NOT UPDATED FOR TAF AMENDMENTS. && .FIRE WEATHER...SCATTERED TO NUMEROUS THUNDERSTORMS WILL OCCUR INTO THIS EVENING THEN ISOLATED SHOWERS AND THUNDERSTORMS WILL HAPPEN LATE TONIGHT INTO SATURDAY MORNING. EXPECT STRONG...GUSTY AND ERRATIC WINDS WITH THE STRONGER THUNDERSTORMS. THEREAFTER...MOISTURE WILL BE SUFFICIENT TO PROVIDE SCATTERED MAINLY AFTERNOON AND EVENING THUNDERSTORMS THIS WEEKEND AND INTO NEXT WEEK. && .TWC WATCHES/WARNINGS/ADVISORIES...NONE. && VISIT US ON FACEBOOK...TWITTER...YOUTUBE...AND AT WEATHER.GOV/TUCSON FRANCIS
The Tucson radar (KEMX), 68 km away, was scanning. The volume nearest the first event began at 22:21 UTC.
1 thunderstorm wind, 1 lightning. Local standard time, as filed.
A trained spotter reported wind gusts up to 61 mph, which broke several small tree branches.
Lightning struck and burned a pair of palm trees in Green Valley.
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: 519465, 525552.