Alert archive / Arizona / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 124, NWS Flagstaff, AZ

October 19, 2015Yavapai County, Arizona

NWS Flagstaff, AZ issued this severe thunderstorm warning at Oct 19, 2015, 6:38 PM MST for Yavapai County, Arizona. It was in force for 23 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: Oct 19, 2015, 6:38 PM MST (01:38 UTC)
Expired: Oct 19, 2015, 7:01 PM MST
In force: 23 min
Issued by: NWS Flagstaff, AZ
Area: Storm-based polygon

County Yavapai County, AZ

The radar

The Flagstaff radar (KFSX), 124 km from the middle of the area, began a volume at 01:39 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

Flgstf/Belemont, AZ (KFGZ), launched 00:00Z, 1.6 hours before the alert went out and 98 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 6 J/kg
Mixed-layer CIN: -66 J/kg
Mixed-layer LCL: 1311 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 82 m²/s²
0-3 km storm-relative helicity: 164 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

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 Oct 19, 3:22 PM MST, 3 hours 16 minutes earlier.

Area forecast discussion, Oct 19, 3:22 PM MST, 3 hours 16 minutes before

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Hazardous weather outlook, Oct 19, 1:50 PM MST, 4 hours 48 minutes before

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In the hours before

Special weather statement, Oct 19, 12:59 PM MST, 5 hours 39 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 19, 6:27 PM MST	Areal Flood Advisory	FGZ	Coconino	12 hr
Oct 19, 9:36 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	24 min
Oct 19, 9:52 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	23 min
Oct 19, 10:03 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	42 min
Oct 19, 10:11 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	49 min
Oct 19, 10:26 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	49 min
Oct 19, 10:56 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	34 min
Oct 20, 1:21 AM MST	Special Weather Statement	FGZ		24 min
Oct 20, 1:56 AM MST	Severe Thunderstorm Warning	FGZ	Coconino, Gila	24 min
Oct 20, 2:09 AM MST	Special Weather Statement	FGZ		36 min
Oct 20, 3:08 AM MST	Severe Thunderstorm Warning	FGZ	Apache, Navajo	37 min
Oct 20, 3:58 AM MST	Special Weather Statement	FGZ		32 min
Oct 20, 4:25 AM MST	Severe Thunderstorm Warning	FGZ	Navajo	20 min
Oct 20, 5:09 AM MST	Severe Thunderstorm Warning	FGZ	Yavapai	41 min
Oct 20, 5:20 AM MST	Special Weather Statement	FGZ		25 min
Oct 20, 5:27 AM MST	Severe Thunderstorm Warning	FGZ	Yavapai	33 min
Oct 20, 6:24 AM MST	Areal Flood Advisory	FGZ	Coconino	6 hr
Oct 20, 7:35 AM MST	Special Weather Statement	FGZ		25 min
Oct 20, 8:57 AM MST	Special Weather Statement	FGZ		33 min
Oct 20, 9:13 AM MST	Severe Thunderstorm Warning	FGZ	Navajo	21 min
Oct 20, 9:37 AM MST	Severe Thunderstorm Warning	FGZ	Coconino, Navajo	23 min
Oct 20, 9:56 AM MST	Areal Flood Advisory	FGZ	Yavapai	3 hr
Oct 20, 9:59 AM MST	Severe Thunderstorm Warning	FGZ	Coconino, Navajo	15 min
Oct 20, 10:22 AM MST	Flash Flood Warning	FGZ	Yavapai	3 hr
Oct 20, 10:24 AM MST	Severe Thunderstorm Warning	FGZ	Coconino, Navajo	36 min
Oct 20, 10:29 AM MST	Special Weather Statement	FGZ	Navajo	31 min
Oct 20, 10:41 AM MST	Tornado Warning	FGZ	Navajo	34 min
Oct 20, 10:46 AM MST	Severe Thunderstorm Warning	FGZ	Gila	29 min
Oct 20, 11:03 AM MST	Severe Thunderstorm Warning	FGZ	Apache	27 min
Oct 20, 11:06 AM MST	Tornado Warning	FGZ	Navajo	24 min
Oct 20, 11:28 AM MST	Severe Thunderstorm Warning	FGZ	Coconino, Gila, Navajo	32 min
Oct 20, 11:34 AM MST	Areal Flood Advisory	FGZ	Navajo	3 hr
Oct 20, 11:40 AM MST	Special Weather Statement	FGZ		50 min
Oct 20, 11:48 AM MST	Special Weather Statement	FGZ		42 min
Oct 20, 12:09 PM MST	Severe Thunderstorm Warning	FGZ	Apache	36 min
Oct 20, 12:53 PM MST	Special Weather Statement	FGZ		37 min
Oct 20, 1:21 PM MST	Areal Flood Advisory	FGZ	Apache, Navajo	3 hr
Oct 20, 1:39 PM MST	Severe Thunderstorm Warning	FGZ	Apache	21 min
Oct 20, 1:46 PM MST	Special Weather Statement	FGZ		29 min
Oct 20, 1:57 PM MST	Special Weather Statement	FGZ		33 min
Oct 20, 3:07 PM MST	Special Weather Statement	FGZ		23 min
Oct 20, 4:06 PM MST	Special Weather Statement	FGZ		24 min

Nearby

Severe Thunderstorm Warnings in Arizona, 2015 Every severe thunderstorm warning in 2015

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.