Alert archive / Missouri / Special Weather Statements in 2021

Special Weather Statement, NWS Springfield, MO

August 8, 2021Dallas County, Missouri

NWS Springfield, MO issued this special weather statement at Aug 8, 2021, 4:50 PM CDT for Dallas County, Missouri. It was in force for 25 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: Aug 8, 2021, 4:50 PM CDT (21:50 UTC)
Expired: Aug 8, 2021, 5:15 PM CDT
In force: 25 min
Issued by: NWS Springfield, MO
Hail: 0.50 in
Wind: 55

County Dallas County, MO

The radar

The Springfield radar (KSGF), 58 km from the middle of the area, began a volume at 21:54 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

Springfield, MO (KSGF), launched 12:00Z, 9.8 hours before the alert went out and 108 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: 1051 J/kg
Mixed-layer CIN: -49 J/kg
Mixed-layer LCL: 838 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 115 m²/s²
0-3 km storm-relative helicity: 129 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 3.3

Open this sounding in Storm Lab

The text

As transmitted.

<!doctype html>
<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>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

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 Springfield, MO wrote its last area forecast discussion before this special weather statement went out at Aug 8, 3:00 PM CDT, 1 hour 50 minutes earlier.

Area forecast discussion, Aug 8, 3:00 PM CDT, 1 hour 50 minutes before

<!doctype html>
<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>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Hazardous weather outlook, Aug 8, 3:18 PM CDT, 1 hour 32 minutes before

<!doctype html>
<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>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

In the hours before

Special weather statement, Aug 8, 1:21 PM CDT, 3 hours 29 minutes before

Special Weather Statement
National Weather Service Springfield MO
121 PM CDT Sun Aug 8 2021

MOZ058-070-071-081>083-092-096-081845-
Dent MO-Maries MO-Douglas MO-Wright MO-Phelps MO-Laclede MO-
Pulaski MO-Texas MO-
121 PM CDT Sun Aug 8 2021

...Strong thunderstorms will impact portions of southeastern Maries,
Wright, north central Douglas, western Dent, eastern Laclede,
Pulaski, Texas and Phelps Counties through 145 PM CDT...

At 120 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from Fort Leonard Wood to 19 miles south of
Waynesville to 18 miles northwest of Mountain Grove to near Hartville
to near Norwood. Movement was northeast at 40 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Rolla...                          Fort Leonard Wood...
Waynesville...                    Mountain Grove...
St. Robert...                     St. James...
Licking...                        Cabool...
Houston...                        Mansfield...
Dawson...                         Norwood...
Doolittle...                      Hartville...
Newburg...                        Raymondville...
Edgar Springs...                  Huggins...
Plato...                          Competition...

This includes Interstate 44 between mile markers 143 and 169, and
between mile markers 171 and 200.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

A Severe Thunderstorm Watch remains in effect until 800 PM CDT for
south central, central, southwestern and east central Missouri.

&&

LAT...LON 3762 9162 3745 9174 3722 9181 3697 9251
      3700 9271 3732 9263 3753 9252 3784 9241
      3816 9155 3815 9153 3780 9153
TIME...MOT...LOC 1820Z 240DEG 36KT 3777 9219 3755 9232 3739 9241 3725
9244 3708 9245

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

Angle

Local storm report, Aug 8, 2:14 PM CDT, 2 hours 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
214 PM CDT SUN AUG 8 2021

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

0141 PM     TSTM WND GST     2 ENE FORT LEONARD WOOD 37.72N 92.12W
08/08/2021  M46 MPH          PULASKI            MO   AWOS

            AWOS STATION KTBN FORT LEONARD WOOD AWOS.

&&

MB

Local storm report, Aug 8, 2:34 PM CDT, 2 hours 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
234 PM CDT SUN AUG 8 2021

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

0227 PM     TSTM WND GST     2 ENE NORTHWYE          37.99N 91.72W
08/08/2021  M43 MPH          PHELPS             MO   MESONET

            MESONET STATION FW7335 3 NE ROLLA.

&&

MB

Local storm report, Aug 8, 2:51 PM CDT, 1 hour 59 minutes before

<!doctype html>
<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>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Local storm report, Aug 8, 4:25 PM CDT, 25 minutes before

<!doctype html>
<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>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Special weather statement, Aug 8, 4:50 PM CDT, 0 minutes before

<!doctype html>
<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>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

Everything else NWS Springfield, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 8, 8:36 AM CDT	Special Weather Statement	SGF	Lawrence	24 min
Aug 8, 12:17 PM CDT	Special Weather Statement	SGF	Laclede	28 min
Aug 8, 12:24 PM CDT	Special Weather Statement	SGF	Webster	36 min
Aug 8, 12:49 PM CDT	Special Weather Statement	SGF	Laclede	26 min
Aug 8, 1:21 PM CDT	Special Weather Statement	SGF	Phelps, Pulaski, Texas, Wright	24 min
Aug 8, 1:41 PM CDT	Severe Thunderstorm Warning	SGF	Maries, Phelps, Pulaski	49 min
Aug 8, 2:46 PM CDT	Heat Advisory	SGF	Barry, Barton, Benton, Camden, Cedar, Christian and 28 more	4 days
Aug 8, 6:23 PM CDT	Special Weather Statement	SGF	Wright	37 min
Aug 8, 6:46 PM CDT	Special Weather Statement	SGF	Wright	29 min

Nearby

Special Weather Statements in Missouri, 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.