Arizona, 2009Damaging Wind in Arizona, May 27, 2009
May 27, 2009 · NWS TWC · 1 event in 1 county or zone
including the Pinaleno Mountains. A dry boundary layer during this pre-monsoon environment encouraged the development of strong thunderstorm outflow winds.
Every event with a place to put it. Tap one for its entry below.
- Tornadoes
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- Hail
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- Deaths
- 0
- Injuries
- 0
- Property damage
- $20,000
- Crop damage
- None recorded
- Events
- 1
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.
Scattered showers and thunderstorms developed over the higher terrain of Cochise County...including the Pinaleno Mountains. A dry boundary layer during this pre-monsoon environment encouraged the development of strong thunderstorm outflow winds.
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 27, 2:30 PM MST, 4 hours 30 minutes earlier.
Area forecast discussion, May 27, 2:30 PM MST, 4 hours 30 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TUCSON AZ
230 PM MST WED MAY 27 2009
.SYNOPSIS...EXPECT ISOLATED AFTERNOON AND EVENING THUNDERSTORMS
MAINLY OVER THE HIGHER TERRAIN...MAINLY EAST OF TUCSON THROUGH
SATURDAY. DRY CONDITIONS WILL RETURN AREAWIDE EARLY NEXT WEEK. NEAR
NORMAL DAYTIME TEMPERATURES THURSDAY...THEN ABOVE NORMAL HIGH
TEMPERATURES TO OCCUR DURING THE WEEKEND AND EARLY NEXT WEEK.
&&
.DISCUSSION...ISOLATED SHOWERS WERE DEVELOPING IN THE MOUNTAINS THIS
AFTERNOON...SOMEWHAT SIMILAR TO YESTERDAY BUT CLOSER TO TUCSON
TODAY.
STILL EXPECT A LITTLE INCREASE IN AREAL COVERAGE OF SHOWERS OR
THUNDERSTORMS THURSDAY AND FRIDAY...THEN TAPERING OFF OVER THE
WEEKEND TO A DRIER FORECAST SCENARIO. THE MAIN DRIVING FACTORS FOR
THIS ACTIVITY WERE THE LINGERING MID-LEVEL MOISTURE AND THE STRONG
SURFACE HEATING. GFS MODEL SHOWED A WEAK UPPER LOW APPROACHING THE
NORTHERN BAJA/SOUTHERN CALIFORNIA COAST FRIDAY WHICH COULD ADVECT
MORE MOISTURE INTO THE AREA AND THUS SUPPORT A LITTLE MORE SHOWER
ACTIVITY FRIDAY AFTERNOON AND EVENING. BY SUNDAY...THIS WEAK LOW
WILL HAVE SHUNTED MOST OF THE MID-LEVEL MOISTURE EAST OF THE AREA
FOR A DRIER FORECAST EARLY NEXT WEEK.
THEREAFTER...BOTH THE GFS AND ECMWF MODELS DEPICTED A CLOSED UPPER
LOW APPROACHING THE NORTHERN CALIFORNIA COAST BY TUESDAY. AN
INCREASING SOUTHWESTERLY FLOW ALOFT AHEAD OF THIS SYSTEM SHOULD BE
SUFFICIENT ENOUGH TO KEEP THE REGION PRECIPITATION FREE. AFTER NEXT
WEDNESDAY THE TWO MODELS DIVERGE...WITH THE ECMWF DROPPING THE
CLOSED UPPER LOW INTO SOUTHERN CALIFORNIA. FOR NOW...WILL OPT TO
KEEP THE FORECAST PRECIPITATION FREE THROUGH WEDNESDAY.
&&
.FIRE WEATHER...SLIGHT CHANCE OF MAINLY AFTERNOON AND EVENING
SHOWERS AND THUNDERSTORMS ACROSS FIRE WEATHER ZONE 146...AS WELL AS
THE EASTERN PORTION OF FIRE ZONE 148 THROUGH SATURDAY. DRY
CONDITIONS ARE FORECAST WEST OF THE TUCSON METRO AREA. POSSIBILITY
OF GUSTY AND ERRATIC WINDS NEAR THUNDERSTORMS OTHERWISE LIGHT
DIURNALLY DRIVEN SURFACE WINDS WITH NEAR NORMAL DAYTIME HIGHS
GRADUALLY MOVING SLIGHTLY ABOVE NORMAL BY THE WEEKEND.
&&
.AVIATION...EXPECT MOSTLY CLEAR SKIES KTUS VICINITY WWD INTO
THURSDAY. EAST OF A KSAD-KDUG LINE EXPECT SCT TO OCCASIONALLY BKN
CLOUDS WITH BASES AROUND 10-12K FT AGL INTO THURSDAY MORNING. THERE
WILL ALSO BE ISOLD-SCT TSRA/SHRA TIL 05Z THURSDAY. SURFACE WINDS
SELY/SLY 5-10 KTS 06Z-18Z THURSDAY...AND WLY/NWLY 5-15 KTS DURING
THE 18Z THURSDAY TO 06Z FRIDAY PERIOD. AVIATION DISCUSSION NOT
UPDATED FOR TAF AMENDMENTS.
&&
.TWC WATCHES/WARNINGS/ADVISORIES...NONE.
WEATHER.GOV/TUCSON
Thunderstorm Wind, Cochise
- When
- May 27, 7:00 PM MST
- Where
- Cochise County, 17 mi N of Willcox
- Measured
- 52 kt (60 mph) estimated gust
- Property damage
- $20,000
- Reported by
- Newspaper
- Coordinates
- 32.496, -109.830
A thunderstorm outflow wind gust estimated at 60 mph destroyed a horse barn on the Diamond P Ranch on Brookerson Road, 17 miles north of Willcox. The 10-stall horse barn was completely destroyed by the wind gust. Two racehorses that were not in the barn were killed, when debris from the barn landed on them.
- Thunderstorm Wind
- Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
After NWS Directive 10-1605, the rules offices file Storm Data by.
- Flash Flooding and Hail in Ohio, May 27, 2009$3.3 million · 50 kt wind · 8 events
- Flash Flood and Hail in California, May 27 to 29, 2009$1.8 million · 1.5 in hail · 20 events
- Hail and Damaging Wind in Texas, May 27 to 28, 2009$1.0 million · 1.75 in hail · 6 events
- Hail and Damaging Wind in Alabama, May 27, 2009$60,000 · 1 in hail · 3 events
- Flash Flooding in Virginia, May 27, 2009$39,000 · 9 events
- Flash Flood and Hail in Arkansas, May 27, 2009$50,000 · 0.75 in hail · 3 events
- Damaging Wind in Pennsylvania, May 27, 2009$50,000 · 50 kt wind · 1 event
- Flash Flooding and Hail in Texas, May 27, 2009$20,000 · 1.75 in hail · 5 events
- Flash Flooding and Hail in Texas, May 27, 2009$1,000 · 4 in hail · 19 events
- Tornado and Flash Flood in Ohio, May 27, 2009$20,000 · EF0 · 3 events
- Flash Flooding in Indiana, May 27, 2009$17,000 · 2 events
- Damaging Winds in Mississippi, May 27, 2009$15,000 · 50 kt wind · 3 events
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: 170870.