Alert archive / Arizona / Special Weather Statements in 2017
Special Weather Statement, NWS Tucson, AZ
NWS Tucson, AZ issued this special weather statement at Jul 12, 2017, 3:33 PM MST for Cochise 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
- Jul 12, 2017, 3:33 PM MST (22:33 UTC)
- Expired
- Jul 12, 2017, 4:15 PM MST
- In force
- 42 min
- Issued by
- NWS Tucson, AZ
County Cochise County, AZ
The radar
The Tucson radar (KEMX), 59 km from the middle of the area, began a volume at 22:35 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, 10.6 hours before the alert went out and 81 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
- 714 J/kg
- Mixed-layer CIN
- -99 J/kg
- Mixed-layer LCL
- 1832 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 39 m²/s²
- 0-3 km storm-relative helicity
- 100 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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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 Jul 12, 2:30 PM MST, 1 hour 3 minutes earlier.
Area forecast discussion, Jul 12, 2:30 PM MST, 1 hour 3 minutes before
Area Forecast Discussion National Weather Service Tucson AZ 230 PM MST Wed Jul 12 2017 .SYNOPSIS...Expect scattered mainly afternoon and evening thunderstorms into the middle of next week. Some thunderstorms will produce locally heavy rainfall. Daily high temperatures will mostly be close to seasonal normals. && .DISCUSSION...So the area that had departing showers this morning has been very activity this afternoon. Interesting. Scattered thunderstorms will continue to develop over the higher terrain this afternoon with outflows pushing to the west southwest. High resolution models bring storms into the Tucson metro area between 7 and 9 pm. However need to get storms going NE of Tucson for this to happen and the way satellite is looking, this might not happen. Wait and see game. Main threat from any storms for the rest of this afternoon into this evening will be heavy downpours and localized severe winds. Steering flow and shear increase Thursday as an inverted trof, currently east of the Big Bend continues to push west. Thus severe potential will be up Thursday afternoon/evening along with localized flash flooding as atmosphere remains wet. Will maintain a standard monsoon forecast thru the weekend into early next week with the usual day-to-day variation in areal coverage of storms. Temperatures will work out that way also. && .AVIATION...Valid thru 13/23Z. Scattered -TSRA/-SHRA mainly from KTUS vicinity east and south through the late evening hours. Brief gusts near 45 kts with the strongest TSRA. Otherwise, VFR conditions with surface wind swly to nwly 8-18 kts and gusts to 25 kts into this evening before dropping to 12 kts or less overnight. Aviation discussion not updated for TAF amendments. && .FIRE WEATHER...Scattered mainly afternoon and evening thunderstorms will prevail into the middle of next week. Expect brief strong, gusty and erratic winds due to thunderstorm outflows. Otherwise, 20- foot winds will generally be terrain driven at less than 15 mph. Occasional gusts will occur during the afternoon hours due to daytime heating. High temperatures will be close to seasonal normals this week and increased moisture will result in moderate relative humidity levels. && .TWC WATCHES/WARNINGS/ADVISORIES...None. && Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
In the hours before
Special weather statement, Jul 12, 12:21 PM MST, 3 hours 12 minutes before
Special Weather Statement National Weather Service Tucson AZ 1221 PM MST WED JUL 12 2017 AZZ508-512-122000- Chiricahua Mountains including Chiricahua National Monument-Eastern Cochise County Below 5000 Feet including Douglas/Willcox- 1221 PM MST WED JUL 12 2017 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL COCHISE COUNTY UNTIL 100 PM MST... At 1219 PM MST, Doppler radar was tracking a strong thunderstorm 4 miles east of Elfrida, moving west at 10 mph. Wind gusts up to 50 mph will be possible with this storm. Locations impacted include... Elfrida and McNeal. LAT...LON 3175 10952 3157 10955 3157 10978 3180 10969 TIME...MOT...LOC 1919Z 099DEG 10KT 3168 10963
Special weather statement, Jul 12, 1:27 PM MST, 2 hours 6 minutes before
Special Weather Statement National Weather Service Tucson AZ 127 PM MST WED JUL 12 2017 AZZ507-513-122100- Upper San Pedro River Valley including Sierra Vista/Benson-Dragoon/Mule/Huachuca and Santa Rita Mountains including Bisbee/Canelo Hills/Madera Canyon- 127 PM MST WED JUL 12 2017 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN COCHISE COUNTY UNTIL 200 PM MST... At 126 PM MST, Doppler radar was tracking a strong thunderstorm over Sierra Vista, moving southwest at 15 mph. Winds in excess of 40 mph will be possible with this storm. Locations impacted include... Sierra Vista, Huachuca City, Sierra Vista Southeast and Fort Huachuca. PRECAUTIONARY/PREPAREDNESS ACTIONS... Heavy rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 3167 11024 3151 11014 3143 11042 3163 11046 TIME...MOT...LOC 2026Z 059DEG 14KT 3157 11030
Special weather statement, Jul 12, 3:33 PM MST, 0 minutes before
Special Weather Statement National Weather Service Tucson AZ 333 PM MST WED JUL 12 2017 AZZ507-508-513-122315- Upper San Pedro River Valley including Sierra Vista/Benson-Dragoon/Mule/Huachuca and Santa Rita Mountains including Bisbee/Canelo Hills/Madera Canyon-Eastern Cochise County Below 5000 Feet including Douglas/Willcox- 333 PM MST WED JUL 12 2017 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL COCHISE COUNTY UNTIL 415 PM MST... At 333 PM MST, Doppler radar was tracking a strong thunderstorm along I-10 about 13 miles southwest of Willcox, moving south at 5 mph. Half inch hail and wind gusts up to 50 mph will be possible with this storm. Locations impacted include... I-10 And Texas Canyon and Dragoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Heavy rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 3216 11012 3219 10991 3199 10998 3196 11012 TIME...MOT...LOC 2233Z 345DEG 5KT 3210 10999 Meyer
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 12:21 PM MST | Special Weather Statement | TWC | Cochise | 39 min |
| Jul 12, 1:27 PM MST | Special Weather Statement | TWC | Santa Cruz | 33 min |
| Jul 12, 2:10 PM MST | Severe Thunderstorm Warning | TWC | Santa Cruz | 35 min |
| Jul 12, 2:44 PM MST | Areal Flood Advisory | TWC | Santa Cruz | 2 hr |
| Jul 12, 4:18 PM MST | Special Weather Statement | TWC | Graham | 57 min |
Nearby
Special Weather Statements in Arizona, 2017Every special weather statement in 2017
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.