Alert archive / Arizona / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 24, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Jul 13, 2017, 5:43 PM MST for Cochise County, Arizona. It was in force for 62 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 13, 2017, 5:43 PM MST (00:43 UTC)
- Expired
- Jul 13, 2017, 6:45 PM MST
- In force
- 62 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Cochise County, AZ
The radar
The Tucson radar (KEMX), 71 km from the middle of the area, began a volume at 00:44 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 13, 6:20 PM MST | TSTM WND DMG | 3 Ne Ramsey Canyon Pres, AZ | SPOTTER REPORTED DAMAGE TO THE ROOF OF A BUILDING SOUTH OF SIERRA VISTA. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 37 minutes after it went out.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Tuscon, AZ (KDMA), launched 00:00Z, 0.7 hours before the alert went out and 109 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
- 757 J/kg
- Mixed-layer CIN
- -57 J/kg
- Mixed-layer LCL
- 2798 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -55 m²/s²
- 0-3 km storm-relative helicity
- -41 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
538
WUUS55 KTWC 140043
SVRTWC
AZC003-140145-
/O.NEW.KTWC.SV.W.0024.170714T0043Z-170714T0145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tucson AZ
543 PM MST THU JUL 13 2017
The National Weather Service in Tucson has issued a
* Severe Thunderstorm Warning for...
Southwestern Cochise County in southeastern Arizona...
* Until 645 PM MST
* At 542 PM MST, a severe thunderstorm was located 10 miles north of
Bisbee, moving southwest at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees. Storms may be preceded by
damaging outflow winds.
* Locations impacted include...
Sierra Vista, Douglas, Bisbee, Tombstone, Palominas, Charleston,
Nicksville, Bisbee-Douglas Airport, Mcneal, Hereford, Naco,
Pirtleville and Elfrida.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3152 11039 3185 11000 3180 10958 3133 10954
3133 11007
TIME...MOT...LOC 0042Z 025DEG 19KT 3168 10992
HAIL...1.00IN
WIND...60MPH
$$
Meyer1 follow-up statement
087
WWUS55 KTWC 140129
SVSTWC
Severe Weather Statement
National Weather Service Tucson AZ
629 PM MST THU JUL 13 2017
AZC003-140145-
/O.CON.KTWC.SV.W.0024.000000T0000Z-170714T0145Z/
Cochise-
629 PM MST THU JUL 13 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM MST
FOR SOUTHWESTERN COCHISE COUNTY...
At 629 PM MST, a severe thunderstorm was located 9 miles west of
Bisbee, moving southwest at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Sierra Vista, Douglas, Bisbee, Sierra Vista Southeast, Tombstone,
Palominas, Charleston, Nicksville, Bisbee-Douglas Airport, Hereford,
Naco, Junction Of Highways 80 And 90 and Pirtleville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3152 11039 3177 11009 3153 10956 3133 10954
3133 11007
TIME...MOT...LOC 0129Z 025DEG 19KT 3145 11004
HAIL...1.00IN
WIND...60MPH
$$
FrenchWhat forecasters said that day
The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jul 13, 12:48 PM MST, 4 hours 55 minutes earlier.
Area forecast discussion, Jul 13, 12:48 PM MST, 4 hours 55 minutes before
Area Forecast Discussion National Weather Service Tucson AZ 1248 PM MST Thu Jul 13 2017 .SYNOPSIS...Expect scattered mainly afternoon and evening thunderstorms through next week. Some thunderstorms will produce locally heavy rainfall and very strong winds. As a result of the storms, daily high temperatures will mostly be close to seasonal normals. && .DISCUSSION...Active day shaping up with convection already developing off to the east as anticipated. Current surface temperature and dewpoint from KTUS plugged into the morning sounding gives CIN of -26 and a CAPE of 2500 J/kg with no other adjustments. Definitely primed and ready. As mentioned earlier, convective allowing models all pretty much develop thunderstorms east and south of Tucson and push them to the west with time with a shot off the Rim again this evening, with the Tucson metro area getting in on the action, likely 5-7 pm. That is beginning to play out with the early development so confidence is pretty good at this time. Also may very well end up with a late night convective complex across Pinal and central/western Pima as an extra bonus. Beside the typical local flooding concerns with PWs as high as we have, the shear environment will allow for the potential of local severe level winds. Friday will depend significantly on how quickly we clear out any lingering cloudiness in order to reset the atmosphere. Better flow aloft during the day but model soundings indicate less instability is available although still good enough. All the ingredients are well enough in place that SPC has us in a marginal risk category again. Beyond that we remain in a rather good flow pattern with plenty of moisture available for daily rounds of storms, and as is typical there will be day to day differences to be dealt with. An additional benefit with this pattern is that high temperatures will be held to average or slightly below average levels. && .AVIATION...Valid thru 14/23Z. -SHRA/-TSRA will cont across SE AZ thru early Friday morning. Brief gusts near 45 kts with the strongest TSRA. Otherwise, VFR conds with surface winds swly to nwly 8-18 kts and gusts to 25 kts into early this evening, then dropping to 12 kts or less overnight. Aviation discussion not updated for TAF amendments. && .FIRE WEATHER...Scattered 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. && PUBLIC...Cerniglia AVIATION....Glueck FIRE WEATHER...Glueck Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
In the hours before
Special weather statement, Jul 13, 1:36 PM MST, 4 hours 7 minutes before
Special Weather Statement National Weather Service Tucson AZ 136 PM MST THU JUL 13 2017 AZZ509-510-132115- Upper Gila River and Aravaipa Valleys including Clifton/Safford-White Mountains of Graham and Greenlee Counties including Hannagan Meadow- 136 PM MST THU JUL 13 2017 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL GRAHAM COUNTY UNTIL 215 PM MST... At 135 PM MST, Doppler radar was tracking a strong thunderstorm 19 miles northwest of Safford, moving southwest at 20 mph. Wind gusts up to 50 mph will be possible with this storm along with a period of heavy rain. Be prepared for a strong crosswind on Highway 70. Locations impacted include... Pima and Fort Thomas. 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 3322 10995 3304 10966 3281 10988 3296 11019 TIME...MOT...LOC 2035Z 038DEG 22KT 3307 10986 Cerniglia
Special weather statement, Jul 13, 3:42 PM MST, 2 hours 1 minute before
Special Weather Statement
National Weather Service Tucson AZ
342 PM MST THU JUL 13 2017
AZZ503-132330-
Upper Santa Cruz River and Altar Valleys including Nogales-
342 PM MST THU JUL 13 2017
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN SANTA CRUZ COUNTY
UNTIL 430 PM MST...
At 340 PM MST, Doppler radar was tracking a strong thunderstorm near
Pena Blanca Lake, or 8 to 10 miles west of Nogales, moving west at
10 mph.
Half inch hail and winds in excess of 45 mph will be possible with
this storm, along with heavy rain.
Locations impacted include...
Rio Rico west, Ruby and Pena Blanca Lake.
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.
If on or near Pena Blanca Lake, get out of the water and move
indoors or inside a vehicle. Remember, lightning can strike out to
10 miles from the parent thunderstorm. If you can hear thunder, you
are close enough to be struck by lightning. Move to safe shelter
now! Do not be caught on the water in a thunderstorm.
&&
LAT...LON 3141 11133 3148 11136 3152 11105 3135 11098
3133 11102 3133 11108
TIME...MOT...LOC 2240Z 071DEG 8KT 3141 11110
MeyerSpecial weather statement, Jul 13, 3:43 PM MST, 2 hours before
Special Weather Statement National Weather Service Tucson AZ 343 PM MST THU JUL 13 2017 AZZ508-509-132330- Upper Gila River and Aravaipa Valleys including Clifton/Safford-Eastern Cochise County Below 5000 Feet including Douglas/Willcox- 343 PM MST THU JUL 13 2017 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN COCHISE AND SOUTHEASTERN GREENLEE COUNTIES UNTIL 430 PM MST... At 342 PM MST, National Weather Service meteorologists were tracking a strong thunderstorm 10 miles northwest of Steins, NM or about 22 miles west of Lordsburg, NM moving southwest at 20 mph. This storm will move into Arizona and affect Interstate 10 between San Simon and the AZ/NM border. Winds in excess of 40 mph and blowing dust will be possible with this storm. Locations impacted include... San Simon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. 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. Areas of blowing dust may briefly reduce visibilities to near or below 1 mile. If you encounter localized dense blowing dust, do not drive into it if at all possible. && LAT...LON 3210 10905 3208 10919 3237 10938 3256 10905 TIME...MOT...LOC 2242Z 059DEG 15KT 3236 10909 French
Special weather statement, Jul 13, 4:19 PM MST, 1 hour 24 minutes before
Special Weather Statement National Weather Service Tucson AZ 419 PM MST THU JUL 13 2017 AZZ508-512-140000- Chiricahua Mountains including Chiricahua National Monument-Eastern Cochise County Below 5000 Feet including Douglas/Willcox- 419 PM MST THU JUL 13 2017 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN COCHISE COUNTY UNTIL 500 PM MST... At 419 PM MST, National Weather Service meteorologists were tracking strong thunderstorms along a line extending from 14 miles southeast of Bowie to 7 miles north of Willcox. Movement was southwest at 15 mph. Winds in excess of 40 mph and blowing dust will be possible with these storms. Locations impacted include... Willcox, Bowie, Cochise, Chiricahua National Monument, I-10 At Milepost 355, San Simon and Kansas Settlement. PRECAUTIONARY/PREPAREDNESS ACTIONS... Heavy rainfall is also occurring with these storms, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. Areas of blowing dust may briefly reduce visibilities to near or below 1 mile. If you encounter localized dense blowing dust, do not drive into it if at all possible. && LAT...LON 3191 10929 3212 11006 3242 10986 3226 10913 TIME...MOT...LOC 2319Z 031DEG 15KT 3223 10926 3237 10982 French
Special weather statement, Jul 13, 5:05 PM MST, 38 minutes before
Special Weather Statement National Weather Service Tucson AZ 505 PM MST THU JUL 13 2017 AZZ508-513-140100- Dragoon/Mule/Huachuca and Santa Rita Mountains including Bisbee/Canelo Hills/Madera Canyon-Eastern Cochise County Below 5000 Feet including Douglas/Willcox- 505 PM MST THU JUL 13 2017 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL COCHISE COUNTY UNTIL 600 PM MST... At 504 PM MST, Doppler radar was tracking a strong thunderstorm 20 miles southeast of Willcox, moving southwest at 15 mph. Wind gusts up to 50 mph will be possible with this storm. Locations impacted include... Sunizona and Pearce-Sunsites. 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 3211 10969 3201 10948 3169 10968 3183 10994 TIME...MOT...LOC 0004Z 031DEG 11KT 3200 10965 French
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 5:05 PM MST | Special Weather Statement | TWC | Cochise | 55 min |
| Jul 13, 5:13 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 47 min |
| Jul 13, 5:25 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Pima | 50 min |
| Jul 13, 5:41 PM MST | Areal Flood Advisory | TWC | Pima | 2 hr |
| Jul 13, 6:00 PM MST | Blowing Dust Advisory | TWC | Pima, Pinal | 2 hr |
| Jul 13, 6:00 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Pima | 45 min |
| Jul 13, 6:05 PM MST | Areal Flood Advisory | TWC | Cochise | 3 hr |
| Jul 13, 6:13 PM MST | Special Weather Statement | TWC | Graham | 47 min |
| Jul 13, 6:36 PM MST | Flash Flood Warning | TWC | Cochise | 114 min |
| Jul 13, 6:43 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Pima, Santa Cruz | 62 min |
| Jul 13, 6:47 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Santa Cruz | 33 min |
| Jul 13, 7:07 PM MST | Special Weather Statement | TWC | 38 min | |
| Jul 13, 7:10 PM MST | Severe Thunderstorm Warning | TWC | Pima | 80 min |
| Jul 13, 7:40 PM MST | Special Weather Statement | TWC | Santa Cruz | 65 min |
| Jul 13, 7:43 PM MST | Flash Flood Warning | TWC | Pima, Pinal | 2 hr |
| Jul 13, 7:56 PM MST | Special Weather Statement | TWC | 49 min | |
| Jul 13, 8:08 PM MST | Severe Thunderstorm Warning | TWC | Pima | 37 min |
| Jul 13, 8:32 PM MST | Severe Thunderstorm Warning | TWC | Pima, Santa Cruz | 43 min |
| Jul 13, 9:12 PM MST | Severe Thunderstorm Warning | TWC | Pima, Santa Cruz | 48 min |
| Jul 14, 3:55 PM MST | Special Weather Statement | TWC | Graham | 35 min |
| Jul 14, 4:38 PM MST | Special Weather Statement | TWC | 37 min | |
| Jul 14, 4:55 PM MST | Severe Thunderstorm Warning | TWC | Pinal | 35 min |
Nearby
Severe Thunderstorm Warnings in Arizona, 2017Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.