Alert archive / Arizona / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 54, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this severe thunderstorm warning at Sep 26, 2019, 3:49 AM MST for Yavapai County, Arizona. It was in force for 26 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Sep 26, 2019, 3:49 AM MST (10:49 UTC)
- Expired
- Sep 26, 2019, 4:15 AM MST
- In force
- 26 min
- Issued by
- NWS Flagstaff, AZ
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
County Yavapai County, AZ
The radar
The Flagstaff radar (KFSX), 124 km from the middle of the area, began a volume at 10:49 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 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 Flagstaff, AZ wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 25, 8:32 PM MST, 7 hours 17 minutes earlier.
Area forecast discussion, Sep 25, 8:32 PM MST, 7 hours 17 minutes before
Area Forecast Discussion National Weather Service Flagstaff AZ 832 PM MST Wed Sep 25 2019 .SYNOPSIS...Thunderstorm coverage should increase along and south of the Mogollon Rim tonight and then spread northward on Thursday. Locally heavy rain may fall across portions of Yavapai County. Very strong southwest wind gusts winds are expected this weekend and Monday. && .UPDATE... Radar shows a few thunderstorms are moving northwestward across Yavapai County this evening. Hi res models continue to show an increase in storm coverage tonight, so no changes will be made to the forecast. Progs are in good agreement showing another cold upper low to set up over the Pac NW this weekend, bringing the potential for very strong SW winds to northern Arizona from Saturday through Monday. At this time Sunday looks like the windiest day. The GFS suggesting areas along and north of the Mogollon rim sustained SW 25-40 mph with gusts to 60+mph, as its 0-1km layer wind speed prog exceeds 50 kts across much of Coconino and northern Navajo county mid day Sunday. && .PREV DISCUSSION /255 PM MST/... Thunderstorms are just now beginning to form across Yavapai County and the Mogollon Rim this afternoon. Should look for storm coverage to increase over the coming hours and especially overnight in areas where we have a Flash Flood Watch. This watch was recently extended through the daytime hours Thursday as low pressure meanders across the state. We are forecasting clearing conditions for most locations on Friday, but low pressure to the north will generate some pretty gusty southwest winds this weekend, particularly on Sunday. The pattern through the extended forecast looks mostly dry with daytime temps near to slightly below normal. && .AVIATION...For the 06Z package...Expect sct-nmrs shra/tsra and isold +tsra slowly spreading north through the night. Most activity will remain along or sw of a line from KPAN-KFLG-KGCN, with the most intense active likley near or sw of KPRC. Most areas predominately VFR, but localized and brief MVFR/IFR possible in the strongest storms. Sfc winds generally light, except near thunderstorms. Aviation discussion not updated for TAF amendments. && .FIRE WEATHER...Widespread showers and storms will develop tonight into Thursday, mainly across Coconino and Yavapai counties. Low pressure will shift east of the area on Friday, resulting in decreased precipitation chances. Saturday through Monday...Gusty southwest winds through the period, with afternoon gusts of 35 to 45 mph. The strongest winds are expected on Sunday. A low chance for afternoon showers and storms over the weekend. && .FGZ WATCHES/WARNINGS/ADVISORIES...Flash Flood Watch through Thursday afternoon FOR AZZ008-037-038. && PUBLIC...DL/KD AVIATION...Peterson FIRE WEATHER...TPS For Northern Arizona weather information visit weather.gov/flagstaff
In the hours before
Special weather statement, Sep 26, 1:47 AM MST, 2 hours 2 minutes before
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</html>Local storm report, Sep 26, 2:02 AM MST, 1 hour 47 minutes before
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</html>Special weather statement, Sep 26, 3:45 AM MST, 4 minutes before
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</html>The office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 25, 9:25 PM MST | Special Weather Statement | FGZ | Yavapai | 50 min |
| Sep 25, 10:31 PM MST | Flash Flood Warning | FGZ | Yavapai | 3 hr |
| Sep 26, 1:47 AM MST | Special Weather Statement | FGZ | Yavapai | 28 min |
| Sep 26, 3:45 AM MST | Special Weather Statement | FGZ | Yavapai | 30 min |
| Sep 26, 5:43 AM MST | Areal Flood Advisory | FGZ | Yavapai | 6 hr |
| Sep 26, 9:04 AM MST | Areal Flood Advisory | FGZ | Yavapai | 3 hr |
| Sep 26, 11:53 AM MST | Areal Flood Advisory | FGZ | Yavapai | 4 hr |
| Sep 26, 11:59 AM MST | Areal Flood Advisory | FGZ | Yavapai | 61 min |
| Sep 26, 3:49 PM MST | Areal Flood Advisory | FGZ | Yavapai | 3 hr |
Nearby
Severe Thunderstorm Warnings in Arizona, 2019Every severe thunderstorm warning in 2019
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.