Alert archive / Arizona / Flash Flood Warnings in 2022

Flash Flood Warning 341, NWS Flagstaff, AZ

October 3, 2022Coconino County, Navajo County, Arizona

NWS Flagstaff, AZ issued this flash flood warning at Oct 3, 2022, 8:18 PM MST for Coconino County, Navajo County, Arizona. It was in force for 8 hr. 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 3, 2022, 8:18 PM MST (03:18 UTC)
Expired: Oct 4, 2022, 4:07 AM MST
In force: 8 hr
Issued by: NWS Flagstaff, AZ
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

Counties Coconino County, AZ, Navajo County, AZ

The radar

The Flagstaff radar (KFSX), 117 km from the middle of the area, began a volume at 03:21 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 flash flood 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 flash flood warning went out at Oct 3, 2:07 PM MST, 6 hours 11 minutes earlier.

Area forecast discussion, Oct 3, 2:07 PM MST, 6 hours 11 minutes before

Area Forecast Discussion
National Weather Service Flagstaff AZ
207 PM MST Mon Oct 3 2022

.SYNOPSIS...Expect daily chances for showers and thunderstorms to
persist through the week and the weekend. Storm coverage will
become more isolated over eastern Arizona by Wednesday, before
storm potential likely expands westward through the end of the
week and over the weekend.

&&

.DISCUSSION...It has been an active day on radar to start the
week. Several strong storm systems have been seen across Coconino
County and Yavapai County today, and we'll continue to see
widespread storm activity throughout the afternoon/evening hours.
This active pattern is the result of a strong shortwave trough
that moved across northwest to southcentral Arizona this
afternoon. Due to the continual rainfall we've seen over the last
24 hours or so, we do have a Flash Flood Watch in effect for our
entire CWA through 11 PM MST tonight. Stay tuned to our social
media pages (Twitter and Facebook) for updated weather information
and always check your local weather before heading out for the
day!

Tuesday and Wednesday...Isolated to widespread storm potential
will be possible mostly along the Mogollon Rim and south
tomorrow. By Wednesday, the northerly flow will continue to push
drier air into the north/northwestern portion of the state,
limiting storm activity to over eastern Arizona.

Thursday onward...Showers and thunderstorms may begin to ramp back
up across central and northern Arizona. Models are beginning to
hold an agreement of additional shortwaves rotating around the
greater low pressure system. Currently, storm coverage is looking
to increase along the Mogollon Rim toward the weekend. Overall,
anticipate a wet weekend.

&&

.AVIATION...For the 00Z TAF package...+SHRA/TSRA will remain WDSPRD
until approximately 02Z. Stronger storms will likely produce
MVFR/IFR conditions. ISOLD SHRA will linger after 03Z, mainly
south of I-40. Winds in and around storms could become gusty, and
erratic. Around 18Z Tuesday, SHRA/TSRA will be possible along and
south of a KGCN-KINW-KSJN line. Aviation discussion not updated
for TAF amendments.

&&

.FIRE WEATHER...Scattered to widespread showers and thunderstorms
are expected for Tuesday, mainly along and south of the Mogollon
Rim. Storm coverage will decrease Wednesday, with best storm chances
over the White Mountains. Light northerly winds are expected outside
of any storms.

Thursday through Saturday...Daily chances for afternoon showers and
thunderstorms continue, mainly across eastern Arizona. Outside of
storm activity, winds will be northeast to easterly with slightly
below average temperatures.

&&
&&

.FGZ WATCHES/WARNINGS/ADVISORIES...
Flood Watch until 11 PM MST this evening for AZZ004>018-037>040-
104>118-137>140.

&&

PUBLIC...Swenson
AVIATION...Swenson
FIRE WEATHER...Swenson

For Northern Arizona weather information visit
weather.gov/flagstaff

In the hours before

Local storm report, Oct 3, 2:25 PM MST, 5 hours 53 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
225 PM MST MON OCT 3 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0220 PM     TSTM WND GST     3 SW PRESCOTT VALLEY    34.58N 112.35W
10/03/2022  E60 MPH          YAVAPAI            AZ   TRAINED SPOTTER

            SPOTTERS REPORTED ESTIMATED WIND GUSTS TO
            50-60 MPH WITH SEVERAL 2 INCH DIAMETER TREE
            BRANCHES DOWN.

&&

MCT

Local storm report, Oct 3, 2:27 PM MST, 5 hours 51 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
227 PM MST MON OCT 3 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0158 PM     HAIL             2 W PRESCOTT COURTHOUSE 34.53N 112.51W
10/03/2022  E0.75 INCH       YAVAPAI            AZ   PUBLIC

&&

Special weather statement, Oct 3, 3:14 PM MST, 5 hours 4 minutes before

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Special weather statement, Oct 3, 3:21 PM MST, 4 hours 57 minutes before

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Local storm report, Oct 3, 3:31 PM MST, 4 hours 47 minutes before

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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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      <p id="message2">
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Local storm report, Oct 3, 3:49 PM MST, 4 hours 29 minutes before

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<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.
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      <p id="message2">
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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 4, 4:07 AM MST	Areal Flood Advisory	FGZ	Coconino, Navajo	4 hr
Oct 4, 7:58 AM MST	River Flood Warning	FGZ	Navajo	16 hr
Oct 4, 2:07 PM MST	Special Weather Statement	FGZ	Gila	23 min
Oct 4, 3:23 PM MST	Special Weather Statement	FGZ	Navajo	37 min

Nearby

Flash Flood Warnings in Arizona, 2022 Every flash flood warning in 2022

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.