Alert archive / Arizona / Special Weather Statements in 2021

Special Weather Statement, NWS Flagstaff, AZ

July 3, 2021Yavapai County, Arizona

NWS Flagstaff, AZ issued this special weather statement at Jul 3, 2021, 2:25 PM MST for Yavapai County, Arizona. It was in force for 35 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 3, 2021, 2:25 PM MST (21:25 UTC)
Expired: Jul 3, 2021, 3:00 PM MST
In force: 35 min
Issued by: NWS Flagstaff, AZ

County Yavapai County, AZ

The radar

The Flagstaff radar (KFSX), 68 km from the middle of the area, began a volume at 21:27 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 12:00Z, 9.4 hours before the alert went out and 138 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: 73 J/kg
Mixed-layer CIN: -207 J/kg
Mixed-layer LCL: 2075 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -35 m²/s²
0-3 km storm-relative helicity: 18 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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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 Flagstaff, AZ wrote its last area forecast discussion before this special weather statement went out at Jul 3, 9:29 AM MST, 4 hours 56 minutes earlier.

Area forecast discussion, Jul 3, 9:29 AM MST, 4 hours 56 minutes before

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<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</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.
      </p>
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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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In the hours before

Special weather statement, Jul 3, 2:25 PM MST, 0 minutes before

Special Weather Statement
National Weather Service Flagstaff AZ
225 PM MST Sat Jul 3 2021

AZZ008-037-038-032200-
Yavapai County Valleys and Basins-Yavapai County  Mountains-Oak Creek
and Sycamore Canyons-
225 PM MST Sat Jul 3 2021

...SIGNIFICANT WEATHER ADVISORY FOR CAMP VERDE AND MIDDLE
VERDE IN YAVAPAI COUNTY UNTIL 300 PM MST...

At 224 PM MST, Doppler radar was tracking a strong thunderstorm over
Cornville, or 9 miles northwest of Camp Verde, moving southwest at 15
mph.

Half inch hail and wind gusts up to 50 mph will be possible with this
storm.

Locations impacted include...
Camp Verde, Verde Village, Bridgeport, Mcguireville, Cherry,
Cottonwood, Montezuma Castle National Monument, Middle Verde, Page
Springs, Lake Montezuma, Cornville and Powell Springs Campground.

LAT...LON 3479 11196 3473 11176 3447 11177 3457 11222
TIME...MOT...LOC 2124Z 037DEG 11KT 3469 11194

ET

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 3, 1:18 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino, Yavapai	4 hr
Jul 3, 1:43 PM MST	Areal Flood Advisory	FGZ	Coconino, Navajo	3 hr
Jul 3, 2:07 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Yavapai	3 hr
Jul 3, 3:03 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Yavapai	3 hr
Jul 3, 3:34 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Yavapai	3 hr
Jul 3, 4:10 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Yavapai	3 hr
Jul 3, 4:54 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Gila	3 hr

Nearby

Special Weather Statements in Arizona, 2021 Every special weather statement in 2021

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.