Alert archive / Arizona / Special Weather Statements in 2015
Special Weather Statement, NWS Tucson, AZ
NWS Tucson, AZ issued this special weather statement at Aug 11, 2015, 8:18 PM MST for Pinal County, Arizona. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 11, 2015, 8:18 PM MST (03:18 UTC)
- Expired
- Aug 11, 2015, 9:00 PM MST
- In force
- 42 min
- Issued by
- NWS Tucson, AZ
County Pinal County, AZ
The radar
The Phoenix radar (KIWA), 64 km from the middle of the area, began a volume at 03:20 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Tuscon, AZ (KDMA), launched 00:00Z, 3.3 hours before the alert went out and 85 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 1262 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 2427 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 107 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.1
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, 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 this special weather statement went out at Aug 11, 2:45 PM MST, 5 hours 33 minutes earlier.
Area forecast discussion, Aug 11, 2:45 PM MST, 5 hours 33 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 245 PM MST TUE AUG 11 2015 .SYNOPSIS...CONDITIONS ARE FAVORABLE FOR SCATTERED THUNDERSTORMS THIS AFTERNOON AND EVENING. SOME STORMS WILL GENERATE STRONG WINDS AND HEAVY RAIN. OTHERWISE...HIGH PRESSURE ALOFT BUILDING INTO THE REGION FROM THE EAST WILL BRING HOT NEAR RECORD MID AUGUST HIGH TEMPERATURES LATER THIS WEEK WITH AN OVERALL DECREASE IN THUNDERSTORM ACTIVITY. && .DISCUSSION...THE MORNING THUNDERSTORM COMPLEX WITH HEAVY RAIN THAT WAS MOSTLY OVER EASTERN PIMA COUNTY AND SE PINAL COUNTY HAS MOVED THRU METRO PHOENIX AND IS NOW IN YAVAPAI COUNTY. ACTIVITY SLOW TO START TODAY IN WAKE OF MORNING STORMS BUT STORMS WERE DEVELOPING WHERE THERE WAS MORE SUNSHINE...LIKE GRAHAM/COCHISE COUNTY AND WESTERN PIMA COUNTY. COMPLEX UPPER AIR SITUATION OVER THE NEXT 12 HOURS AS A PAIR OF CIRCULATIONS WILL IMPACT THE AREA. THE FIRST CIRCULATION...SEEN NICELY ON WATER VAPOR...WAS JUST S OF NOGALES MOVING NNW AROUND 20 MPH. THE SECOND CIRULATION...A WEAK MCV SEEN NICELY ON VISIBLE IMAGERY...WAS APPROACING ROCKY POINT. BOTH FEATURES WILL PROVIDE THE DYNAMICS FOR THE DEVELOPMENT OF ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS. MAIN THREAT WITH STORMS WILL BE HEAVY RAIN AND STRONG GUST WINDS...WITH A FEW STORMS POSSIBLY NEAR SEVERE LIMITS. SINCE THE STORMS WILL BE MOVING...THE FLASH FLOOD THREAT WILL BE LOW. THE STRONG UPPER HIGH THAT IS OVER TEXAS TODAY WILL EXPAND WEST THIS WEEK...BRINGING REDUCED CHANCES FOR AFTERNOON/EVENING STORMS EACH DAY...AND TURNING UP THE HEAT. HIGHS LATER IN THE WEEK HAVE THE POTENTIAL TO BE WARMER THAN WHAT OCCURRED LAST WEEK. SOME OF THE IN HOUSE THICKNESS STUDY NUMBERS SUGGEST THAT TUCSON COULD HIT 108 OR 109 FRIDAY OR SATURDAY. THESE WOULD BE NEAR RECORD HIGHS IN TUCSON FOR THE 14TH AND 15TH. WITH THAT IN MIND HAVE RAISED HIGHS A BIT BUT NOT TO THE LEVELS MENTIONED ABOVE. STAY TUNED. MAY SEE AN UPTICK IN THUNDERSTORM ACTIVITY SUNDAY INTO EARLY NEXT WEEK. AGAIN STAY TUNED. && .AVIATION...VALID THRU 12/23Z. SCT-BKN CLOUDS LAYERED MAINLY ABOVE 8K FT AGL WITH SOME ADDITIONAL CLEARING AFTER 11/15Z. HOWEVER...SCT SHRA/TSRA EXPECTED TO DEVELOP AFTER 11/20Z. STRONG OUTFLOW WINDS OF 25-35 KTS AND AREAS OF BLOWING DUST POSSIBLE MAINLY NORTH AND WEST OF KTUS WITH SOME OF THESE STORMS...OTHERWISE NORMAL DIURNAL WIND TRENDS. STORMS WILL BEGIN TO TAPER OFF AFTER 12/03Z. AVIATION DISCUSSION NOT UPDATED FOR TAF AMENDMENTS. && .FIRE WEATHER...ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED ACROSS MUCH OF SOUTHEAST ARIZONA THROUGH WEDNESDAY. A SLIGHT DRYING TREND WILL THEN LEAD TO A SLIGHT REDUCTION IN THUNDERSTORM ACTIVITY ON THURSDAY AND FRIDAY WITH JUST ISOLATED COVERAGE. MOISTURE WILL GRADUALLY INCREASE AGAIN THIS WEEKEND INTO EARLY NEXT WEEK WITH A TYPICAL MONSOON PATTERN IN PLACE. OUTSIDE OF THUNDERSTORM WIND GUSTS...20-FT WINDS WILL GENERALLY BE LIGHT AT LESS THAN 15 MPH. && .TWC WATCHES/WARNINGS/ADVISORIES...NONE. && VISIT US ON FACEBOOK...TWITTER...YOUTUBE...AND AT WEATHER.GOV/TUCSON
In the hours before
Special weather statement, Aug 11, 5:19 PM MST, 2 hours 59 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 519 PM MST TUE AUG 11 2015 AZZ501-502-120045- WESTERN PIMA COUNTY INCLUDING AJO/ORGAN PIPE CACTUS NATIONAL MONUMENT AZ-TOHONO O'ODHAM NATION INCLUDING SELLS AZ- 519 PM MST TUE AUG 11 2015 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN PIMA COUNTY UNTIL 545 PM MST... AT 518 PM MST...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR AJO...MOVING NORTHWEST AT 25 MPH. REDUCED VISIBILITIES DUE TO BLOWING DUST AND WIND GUSTS UP TO 50 MPH AND HEAVY RAIN WILL BE POSSIBLE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... AJO. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. BLOWING DUST CAN QUICKLY REDUCE VISIBILITY...CAUSING ACCIDENTS THAT MAY INVOLVE CHAIN COLLISIONS. IF DENSE DUST IS OBSERVED ACROSS A ROADWAY...PULL YOUR VEHICLE OFF THE PAVEMENT AS FAR AS POSSIBLE TO STOP. TURN OFF THE LIGHTS...SET THE EMERGENCY BRAKE...AND TAKE YOUR FOOT OFF THE BRAKE PEDAL TO ENSURE TAIL LIGHTS ARE NOT ILLUMINATED. && LAT...LON 3234 11263 3229 11276 3249 11301 3250 11268 TIME...MOT...LOC 0018Z 126DEG 21KT 3241 11277
Special weather statement, Aug 11, 6:07 PM MST, 2 hours 11 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 607 PM MST TUE AUG 11 2015 AZZ506-120130- SOUTHEAST PINAL COUNTY INCLUDING KEARNY/MAMMOTH/ORACLE AZ- 607 PM MST TUE AUG 11 2015 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN PINAL COUNTY UNTIL 630 PM MST... AT 607 PM MST...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER BIOSPHERE 2...MOVING NORTHWEST AT 15 MPH. HALF INCH HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... ORACLE AND BIOSPHERE 2. THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. LAT...LON 3259 11076 3253 11086 3265 11102 3269 11087 TIME...MOT...LOC 0107Z 142DEG 15KT 3260 11086
Special weather statement, Aug 11, 6:23 PM MST, 1 hour 55 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 623 PM MST TUE AUG 11 2015 AZZ507-513-120200- DRAGOON/MULE/HUACHUCA AND SANTA RITA MOUNTAINS INCLUDING BISBEE/CANELO HILLS/MADERA CANYON AZ- UPPER SAN PEDRO RIVER VALLEY INCLUDING SIERRA VISTA/BENSON AZ- 623 PM MST TUE AUG 11 2015 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN COCHISE COUNTY UNTIL 700 PM MST... AT 622 PM MST...DOPPLER RADAR WAS TRACKING AN AREA OF STRONG THUNDERSTORMS PRODUCING HEAVY RAIN SOUTHEAST OF SIERRIA VISTA...MOVING NORTHWEST AT 25 MPH. HALF INCH HAIL...HEAVY RAIN...AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... SIERRA VISTA...HUACHUCA CITY...SIERRA VISTA SOUTHEAST...NICKSVILLE... FORT HUACHUCA...PALOMINAS...RAMSEY CANYON PRESERVE...HEREFORD AND CORONADO NATIONAL MEMORIAL. THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. LAT...LON 3160 11002 3134 11010 3135 11045 3168 11044 TIME...MOT...LOC 0122Z 130DEG 21KT 3145 11023
Special weather statement, Aug 11, 7:17 PM MST, 1 hour 1 minute before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
717 PM MST TUE AUG 11 2015
AZZ504-506-507-514-120300-
TUCSON METRO AREA INCLUDING TUCSON/GREEN VALLEY/MARANA/VAIL AZ-
UPPER SAN PEDRO RIVER VALLEY INCLUDING SIERRA VISTA/BENSON AZ-
SOUTHEAST PINAL COUNTY INCLUDING KEARNY/MAMMOTH/ORACLE AZ-
SANTA CATALINA AND RINCON MOUNTAINS INCLUDING MOUNT
LEMMON/SUMMERHAVEN AZ-
717 PM MST TUE AUG 11 2015
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN PINAL AND
NORTHEASTERN PIMA COUNTIES UNTIL 800 PM MST...
AT 714 PM MST...DOPPLER RADAR WAS TRACKING A GROUP OF STRONG
THUNDERSTORMS OVER EASTERN PORTIONS OF TUCSON METRO AND THE
CATALINA AREA...MOVING NORTHWEST AT 15 MPH.
HALF INCH HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH
THESE STORMS.
LOCATIONS IMPACTED INCLUDE...
TUCSON...ORO VALLEY...TANQUE VERDE...LITTLETOWN...CASAS ADOBES...
SADDLEBROOKE...CATALINA FOOTHILLS...MOUNT LEMMON/SUMMERHAVEN...SEVEN
FALLS...CATALINA...RITA RANCH...VAIL...CATALINA STATE PARK...
DAVIS-MONTHAN AIR FORCE BASE...SABINO CANYON...SAGUARO NATIONAL PARK
EAST AND CORONA DE TUCSON.
LAT...LON 3236 11054 3203 11049 3194 11082 3237 11097
3260 11091
TIME...MOT...LOC 0214Z 133DEG 13KT 3228 11074
RHLocal storm report, Aug 11, 8:15 PM MST, 3 minutes before
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</html>Special weather statement, Aug 11, 8:18 PM MST, 0 minutes before
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</html>The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 5:19 PM MST | Special Weather Statement | TWC | 26 min | |
| Aug 11, 5:32 PM MST | Severe Thunderstorm Warning | TWC | Graham | 28 min |
| Aug 11, 5:59 PM MST | Severe Thunderstorm Warning | TWC | Graham | 46 min |
| Aug 11, 6:03 PM MST | Areal Flood Advisory | TWC | Cochise | 117 min |
| Aug 11, 6:07 PM MST | Special Weather Statement | TWC | 23 min | |
| Aug 11, 6:23 PM MST | Special Weather Statement | TWC | 37 min | |
| Aug 11, 6:31 PM MST | Flash Flood Warning | TWC | Pima | 89 min |
| Aug 11, 7:11 PM MST | Areal Flood Advisory | TWC | Cochise, Pima, Pinal | 2 hr |
| Aug 11, 7:17 PM MST | Special Weather Statement | TWC | 43 min | |
| Aug 11, 7:27 PM MST | Severe Thunderstorm Warning | TWC | Pima | 33 min |
| Aug 11, 7:47 PM MST | Severe Thunderstorm Warning | TWC | Pima | 28 min |
| Aug 11, 7:53 PM MST | Areal Flood Advisory | TWC | Pima, Pinal | 112 min |
| Aug 11, 7:59 PM MST | Flash Flood Warning | TWC | Pima | 2 hr |
| Aug 11, 8:07 PM MST | Severe Thunderstorm Warning | TWC | Pima | 23 min |
| Aug 11, 10:56 PM MST | Special Weather Statement | TWC | Pinal | 49 min |
| Aug 12, 2:54 PM MST | Special Weather Statement | TWC | 51 min | |
| Aug 12, 3:21 PM MST | Special Weather Statement | TWC | 39 min | |
| Aug 12, 3:53 PM MST | Areal Flood Advisory | TWC | Pima | 112 min |
| Aug 12, 3:58 PM MST | Special Weather Statement | TWC | 47 min | |
| Aug 12, 4:22 PM MST | Areal Flood Advisory | TWC | Graham, Pima, Pinal | 113 min |
| Aug 12, 4:39 PM MST | Areal Flood Advisory | TWC | Pima | 3 hr |
Nearby
Special Weather Statements in Arizona, 2015Every special weather statement in 2015
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.