Alert archive / Arizona / Special Weather Statements in 2017
Special Weather Statement, NWS Tucson, AZ
NWS Tucson, AZ issued this special weather statement at Jul 18, 2017, 4:01 PM MST. It was in force for 44 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 18, 2017, 4:01 PM MST (23:01 UTC)
- Expired
- Jul 18, 2017, 4:45 PM MST
- In force
- 44 min
- Issued by
- NWS Tucson, AZ
The radar
The Tucson radar (KEMX), 37 km from the middle of the area, began a volume at 23:05 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, 11.0 hours before the alert went out and 5 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
- 898 J/kg
- Mixed-layer CIN
- -69 J/kg
- Mixed-layer LCL
- 1066 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -17 m²/s²
- 0-3 km storm-relative helicity
- 35 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 18, 2:34 PM MST, 1 hour 27 minutes earlier.
Area forecast discussion, Jul 18, 2:34 PM MST, 1 hour 27 minutes before
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</html>In the hours before
Local storm report, Jul 18, 11:38 AM MST, 4 hours 23 minutes before
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</html>Special weather statement, Jul 18, 11:56 AM MST, 4 hours 5 minutes before
Special Weather Statement National Weather Service Tucson AZ 1156 AM MST TUE JUL 18 2017 AZZ508-509-511-181945- Upper Gila River and Aravaipa Valleys including Clifton/Safford-Eastern Cochise County Below 5000 Feet including Douglas/Willcox-Galiuro and Pinaleno Mountains including Mount Graham- 1156 AM MST TUE JUL 18 2017 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN GRAHAM COUNTY UNTIL 1245 PM MST... At 1155 AM MST, Doppler radar was tracking a strong thunderstorm 20 miles southwest of Safford, moving southwest at 10 mph. Wind gusts up to 50 mph will be possible with this storm. Locations impacted include... Fort Grant and Bonita. 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. This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service. && LAT...LON 3278 11000 3259 10979 3242 10994 3266 11025 TIME...MOT...LOC 1855Z 047DEG 9KT 3261 10993 Leins
Special weather statement, Jul 18, 1:21 PM MST, 2 hours 40 minutes before
Special Weather Statement National Weather Service Tucson AZ 121 PM MST TUE JUL 18 2017 AZZ508-512-182115- Chiricahua Mountains including Chiricahua National Monument-Eastern Cochise County Below 5000 Feet including Douglas/Willcox- 121 PM MST TUE JUL 18 2017 ...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL COCHISE COUNTY UNTIL 215 PM MST... At 120 PM MST, Doppler radar was tracking a strong thunderstorm 12 miles southeast of Willcox, moving northwest at 20 mph. Wind gusts up to 50 mph will be possible with this storm. Locations impacted include... Willcox. 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. This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service. && LAT...LON 3221 10940 3202 10952 3224 11003 3241 10980 TIME...MOT...LOC 2020Z 115DEG 16KT 3216 10964 Leins
Special weather statement, Jul 18, 1:53 PM MST, 2 hours 8 minutes before
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</html>Special weather statement, Jul 18, 3:46 PM MST, 15 minutes before
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</html>Special weather statement, Jul 18, 4:01 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 |
|---|---|---|---|---|
| Jul 17, 9:08 PM MST | Areal Flood Advisory | TWC | Pima | 6 hr |
| Jul 17, 10:02 PM MST | Special Weather Statement | TWC | 43 min | |
| Jul 18, 9:39 AM MST | Flash Flood Watch | TWC | Cochise, Graham, Greenlee, Pima, Pinal, Santa Cruz | 16 hr |
| Jul 18, 11:56 AM MST | Special Weather Statement | TWC | Graham | 49 min |
| Jul 18, 12:38 PM MST | Areal Flood Advisory | TWC | Graham | 3 hr |
| Jul 18, 12:47 PM MST | Areal Flood Advisory | TWC | Graham, Pinal | 3 hr |
| Jul 18, 1:21 PM MST | Special Weather Statement | TWC | Cochise | 54 min |
| Jul 18, 1:24 PM MST | Areal Flood Advisory | TWC | Pima, Pinal | 3 hr |
| Jul 18, 1:37 PM MST | Flash Flood Warning | TWC | Pima | 3 hr |
| Jul 18, 1:40 PM MST | Areal Flood Advisory | TWC | Cochise | 3 hr |
| Jul 18, 1:53 PM MST | Special Weather Statement | TWC | Santa Cruz | 52 min |
| Jul 18, 2:51 PM MST | Areal Flood Advisory | TWC | Pima | 3 hr |
| Jul 18, 3:46 PM MST | Special Weather Statement | TWC | 44 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.