Alert archive / Arizona / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 7, NWS Flagstaff, AZ

July 3, 2008Coconino County, Gila County, Yavapai County, Arizona

NWS Flagstaff, AZ issued this severe thunderstorm warning at Jul 3, 2008, 6:59 PM MST for Coconino County, Gila County, Yavapai County, Arizona. It was in force for 31 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: Jul 3, 2008, 6:59 PM MST (01:59 UTC)
Expired: Jul 3, 2008, 7:30 PM MST
In force: 31 min
Issued by: NWS Flagstaff, AZ
Area: Storm-based polygon

Counties Coconino County, AZ, Gila County, AZ, Yavapai County, AZ

The radar

The Flagstaff radar (KFSX), 51 km from the middle of the area, began a volume at 01:59 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

Phoenix, AZ (KPSR), launched 00:00Z, 2.0 hours before the alert went out and 148 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: 209 J/kg
Mixed-layer CIN: -267 J/kg
Mixed-layer LCL: 3161 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 99 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Jul 3, 2:45 PM MST, 4 hours 14 minutes earlier.

Area forecast discussion, Jul 3, 2:45 PM MST, 4 hours 14 minutes before

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Hazardous weather outlook, Jul 3, 9:44 AM MST, 9 hours 15 minutes before

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</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 4, 12:10 PM MST	Severe Thunderstorm Warning	FGZ	Coconino	21 min
Jul 4, 3:37 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	23 min
Jul 4, 4:07 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	15 min
Jul 4, 4:13 PM MST	Severe Thunderstorm Warning	FGZ	Gila	32 min
Jul 4, 4:16 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	11 min
Jul 4, 4:25 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	22 min
Jul 4, 4:31 PM MST	Severe Thunderstorm Warning	FGZ	Gila	29 min
Jul 4, 4:35 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	25 min
Jul 4, 4:54 PM MST	Severe Thunderstorm Warning	FGZ	Gila	36 min
Jul 4, 4:55 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	35 min

Nearby

Severe Thunderstorm Warnings in Arizona, 2008 Every severe thunderstorm warning in 2008

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.