Alert archive / Missouri / Special Weather Statements in 2021

Special Weather Statement, NWS Springfield, MO

August 8, 2021Lawrence County, Missouri

NWS Springfield, MO issued this special weather statement at Aug 8, 2021, 8:36 AM CDT for Lawrence County, Missouri. It was in force for 24 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, 8:36 AM CDT (13:36 UTC)
Expired: Aug 8, 2021, 9:00 AM CDT
In force: 24 min
Issued by: NWS Springfield, MO
Hail: 0.00 in
Wind: 50

County Lawrence County, MO

The radar

The Springfield radar (KSGF), 27 km from the middle of the area, began a volume at 13:39 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

Springfield, MO (KSGF), launched 12:00Z, 1.6 hours before the alert went out and 31 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.

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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 Springfield, MO wrote its last area forecast discussion before this special weather statement went out at Aug 8, 6:12 AM CDT, 2 hours 24 minutes earlier.

Area forecast discussion, Aug 8, 6:12 AM CDT, 2 hours 24 minutes before

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<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.
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Hazardous weather outlook, Aug 8, 4:24 AM CDT, 4 hours 12 minutes before

Hazardous Weather Outlook
National Weather Service Springfield MO
424 AM CDT Sun Aug 8 2021

KSZ073-097-101-MOZ055>058-066>071-077>083-088>098-101>106-090930-
Bourbon-Crawford-Cherokee-Benton-Morgan-Miller-Maries-Vernon-
St. Clair-Hickory-Camden-Pulaski-Phelps-Barton-Cedar-Polk-Dallas-
Laclede-Texas-Dent-Jasper-Dade-Greene-Webster-Wright-Newton-
Lawrence-Christian-Douglas-Howell-Shannon-McDonald-Barry-Stone-
Taney-Ozark-Oregon-
424 AM CDT Sun Aug 8 2021

This Hazardous Weather Outlook is for portions of the Missouri
Ozarks and extreme southeast Kansas.

.DAY ONE...Today and Tonight.

Weather hazards expected...

  Limited hail risk.
  Limited thunderstorm wind damage risk.
  Limited flooding risk.
  Elevated lightning risk.
  Limited excessive heat risk.

DISCUSSION...

  Showers and thunderstorms are expected today across the area.
  Some strong to severe storms will be possible this afternoon and
  evening. Primary hazards include severe hail, damaging wind
  gusts, and lightning. Additionally, there is the potential for
  localized heavy rainfall and flooding in areas where repeated
  rounds of thunderstorms track.

  In addition there is the potential for heat indices of 95 to 100
  degrees this afternoon in a few locations.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

  Thunderstorms will be possible to some degree on a
  daily basis through Thursday but widespread storms are not
  expected.

  Hot and humid weather is expected during the work week from
  Monday to Thursday. Afternoon heat index values at or above 100
  degrees are expected on a daily basis with some areas reaching
  above 105 degrees.

.SPOTTER INFORMATION STATEMENT...

  Spotter activation may be needed later today or tonight for
  portions of central Missouri.

&&

More detailed information can be accessed at:
http://www.weather.gov/sgf/sitrep

This product in graphical format...along with other weather...
hydrological and climate information...at
http://www.weather.gov/sgf

Raberding

In the hours before

Special weather statement, Aug 8, 8:36 AM CDT, 0 minutes before

Special Weather Statement
National Weather Service Springfield MO
836 AM CDT Sun Aug 8 2021

MOZ089-090-094-081400-
Greene MO-Dade MO-Lawrence MO-
836 AM CDT Sun Aug 8 2021

...Strong thunderstorms will impact portions of eastern Lawrence,
western Greene and southeastern Dade Counties through 900 AM CDT...

At 835 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Miller to near Mount Vernon to 7 miles
northwest of Aurora to near Verona. Movement was northeast at 30 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...
Mount Vernon...                   Ash Grove...
Miller...                         Walnut Grove...
Everton...                        Halltown...
Chesapeake...                     Cave Springs...
Bois D'arc...

This includes Interstate 44 between mile markers 45 and 65.

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.

&&

LAT...LON 3698 9385 3713 9383 3724 9389 3743 9361
      3742 9344 3710 9352 3710 9360 3707 9361
TIME...MOT...LOC 1335Z 237DEG 26KT 3721 9380 3716 9378 3711 9378 3706
9380 3702 9382

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

Angle

The office that day

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

Issued	Product	Office	Counties	Lasted
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, 4:50 PM CDT	Special Weather Statement	SGF	Dallas	25 min
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.