Alert archive / Arizona / Special Weather Statements in 2012

Special Weather Statement, NWS Tucson, AZ

August 14, 2012Santa Cruz County, Arizona

NWS Tucson, AZ issued this special weather statement at Aug 14, 2012, 3:45 PM MST for Santa Cruz County, Arizona. It was in force for 45 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 14, 2012, 3:45 PM MST (22:45 UTC)
Expired
Aug 14, 2012, 4:30 PM MST
In force
45 min
Issued by
NWS Tucson, AZ

County Santa Cruz County, AZ

The radar

The Tucson radar (KEMX), 62 km from the middle of the area, began a volume at 22:47 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 12:00Z, 10.8 hours before the alert went out and 84 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.

Skew-T log-pSkew-T log-p diagram, Tuscon, AZ at 12:00Z on 2012-08-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 31 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tuscon, AZ at 12:00Z on 2012-08-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -36 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
31 J/kg
Mixed-layer CIN
-319 J/kg
Mixed-layer LCL
3146 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
-36 m²/s²
0-3 km storm-relative helicity
3 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 14, 2:35 PM MST, 1 hour 10 minutes earlier.

Area forecast discussion, Aug 14, 2:35 PM MST, 1 hour 10 minutes before
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Hazardous weather outlook, Aug 14, 8:10 AM MST, 7 hours 35 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TUCSON AZ
810 AM MST TUE AUG 14 2012

AZZ501>515-150700-
WESTERN PIMA COUNTY-TOHONO O'ODHAM NATION-
UPPER SANTA CRUZ RIVER VALLEY/ALTAR VALLEY-TUCSON METRO AREA-
SOUTH CENTRAL PINAL COUNTY-SOUTHEAST PINAL COUNTY-
UPPER SAN PEDRO RIVER VALLEY-
EASTERN COCHISE COUNTY BELOW 5000 FEET-UPPER GILA RIVER VALLEY-
WHITE MOUNTAINS OF GRAHAM AND GREENLEE COUNTIES-
GALIURO AND PINALENO MOUNTAINS-CHIRICAHUA MOUNTAINS-
DRAGOON AND MULE AND HUACHUCA AND SANTA RITA MOUNTAINS-
CATALINA AND RINCON MOUNTAINS-BABOQUIVARI MOUNTAINS-
810 AM MST TUE AUG 14 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST
ARIZONA.

.DAY ONE...TODAY AND TONIGHT

VERY HOT HIGH TEMPERATURES BETWEEN 105 AND 110 DEGREES ARE
FORECAST ACROSS THE VALLEYS BELOW 3000 FEET TODAY.

IN ADDITION...ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED TO
DEVELOP AGAIN IN MOST AREAS THIS AFTERNOON AND CONTINUE INTO THE
EVENING. THE MOST CONCENTRATED AREA OF STORMS IS FORECAST ALONG
THE INTERNATIONAL BORDER. THE MAIN THREATS FROM THUNDERSTORMS
TODAY AND TONIGHT WILL BE DAMAGING WIND GUSTS OF 55 TO 65
MPH...ALONG WITH DANGEROUS CLOUD TO GROUND LIGHTNING STRIKES.
LOCATIONS THAT GET HIT BY A SLOW MOVING THUNDERSTORM OR BY MORE
THAN ONE THUNDERSTORM COULD RECEIVE HEAVY RAIN AMOUNTS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

AFTER ANOTHER HOT DAY WEDNESDAY WHEN HIGH TEMPERATURES BETWEEN 103 AND
108 ARE FORECAST BELOW 3000 FEET...TEMPERATURES SHOULD TREND DOWN
CLOSER TO MID AUGUST AVERAGES THE REST OF THE WEEK.

HOWEVER...THUNDERSTORM COVERAGE WILL INCREASE FOR THE LATTER HALF
OF THE WORK WEEK AND INTO THE WEEKEND. THE MAIN THREAT FROM
THUNDERSTORMS WILL SHIFT FROM GUSTY WINDS TO HEAVY RAIN AND FLASH
FLOODING.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

KD

WEATHER.GOV/TUCSON

In the hours before

Special weather statement, Aug 14, 1:35 PM MST, 2 hours 10 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
135 PM MST TUE AUG 14 2012

AZZ503-504-142100-
TUCSON METRO AREA INCLUDING TUCSON/GREEN VALLEY/MARANA/VAIL AZ-UPPER
SANTA CRUZ RIVER AND ALTAR VALLEYS INCLUDING NOGALES AZ-
135 PM MST TUE AUG 14 2012

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN PIMA COUNTY UNTIL 200 PM
MST...

AT 130 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 13 MILES WEST OF GREEN VALLEY...MOVING SOUTHWEST
AT 5 MPH.

WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH
FREQUENT DANGEROUS LIGHTNING.

AREAS AFFECTED BY THIS STORM INCLUDE...MAINLY RURAL AREAS OF SOUTHERN
PIMA COUNTY. GUSTY THUNDERSTORM OUTFLOWS COULD REACH HIGHWAY 286
MIDWAY BETWEEN THREE POINTS AND SASABE.

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

LAT...LON 3169 11132 3188 11145 3199 11120 3183 11109
TIME...MOT...LOC 2034Z 059DEG 5KT 3186 11123

KD
Special weather statement, Aug 14, 3:14 PM MST, 31 minutes before
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Special weather statement, Aug 14, 3:45 PM MST, 0 minutes before
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The office that day

Everything else NWS Tucson, AZ issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 13, 5:47 PM MSTSevere Thunderstorm WarningTWCPima28 min
Aug 13, 5:50 PM MSTSevere Thunderstorm WarningTWCPima40 min
Aug 13, 6:29 PM MSTSevere Thunderstorm WarningTWCPima46 min
Aug 14, 1:35 PM MSTSpecial Weather StatementTWCSanta Cruz25 min
Aug 14, 2:13 PM MSTSevere Thunderstorm WarningTWCPima32 min
Aug 14, 2:32 PM MSTSevere Thunderstorm WarningTWCCochise43 min
Aug 14, 2:45 PM MSTSevere Thunderstorm WarningTWCPima45 min
Aug 14, 2:59 PM MSTSevere Thunderstorm WarningTWCSanta Cruz46 min
Aug 14, 3:14 PM MSTSpecial Weather StatementTWCCochise46 min
Aug 14, 3:26 PM MSTSevere Thunderstorm WarningTWCPima, Santa Cruz64 min
Aug 14, 3:32 PM MSTAreal Flood AdvisoryTWCPima, Santa Cruz88 min
Aug 14, 4:06 PM MSTSpecial Weather StatementTWCCochise39 min
Aug 14, 4:10 PM MSTSevere Thunderstorm WarningTWCCochise, Santa Cruz50 min
Aug 14, 4:45 PM MSTSpecial Weather StatementTWCSanta Cruz45 min
Aug 14, 4:51 PM MSTSevere Thunderstorm WarningTWCPima39 min

Nearby

Special Weather Statements in Arizona, 2012Every special weather statement in 2012

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.