Alert archive / Missouri / Special Weather Statements in 2020

Special Weather Statement, NWS Springfield, MO

August 9, 2020Cedar County, Missouri

NWS Springfield, MO issued this special weather statement at Aug 9, 2020, 2:43 PM CDT for Cedar County, Missouri. It was in force for 47 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 9, 2020, 2:43 PM CDT (19:43 UTC)
Expired: Aug 9, 2020, 3:30 PM CDT
In force: 47 min
Issued by: NWS Springfield, MO

County Cedar County, MO

The radar

The Springfield radar (KSGF), 76 km from the middle of the area, began a volume at 19:44 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

Topeka, KS (KTOP), launched 12:00Z, 7.7 hours before the alert went out and 209 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: 505 J/kg
Mixed-layer CIN: -362 J/kg
Mixed-layer LCL: 1569 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 310 m²/s²
0-3 km storm-relative helicity: 180 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

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 9, 12:24 PM CDT, 2 hours 19 minutes earlier.

Area forecast discussion, Aug 9, 12:24 PM CDT, 2 hours 19 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.
      </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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Hazardous weather outlook, Aug 9, 11:36 AM CDT, 3 hours 7 minutes before

Hazardous Weather Outlook
National Weather Service Springfield MO
1136 AM CDT Sun Aug 9 2020

KSZ073-097-101-MOZ055>058-066>071-077>083-088>098-101>106-101645-
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-
1136 AM CDT Sun Aug 9 2020

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

.DAY ONE...This Afternoon and Tonight.

Weather hazards expected...

  Limited lightning risk.
  Limited excessive heat risk.

DISCUSSION...

Scattered thunderstorms will continue across portions of eastern
Kansas and into central Missouri through this afternoon.
Occasional cloud-to-ground lightning can be expected along and
north of the Highway 54 corridor.

Heat index values as high as 105 degrees will be possible today
across extreme southeast Kansas and far western Missouri.

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

Additional storms will be possible Monday through Saturday.

Heat index values as high as 105 degrees will also be possible on
Monday.

.SPOTTER INFORMATION STATEMENT...

  Spotter activation will not be needed through tonight.

&&

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

Albano

In the hours before

Special weather statement, Aug 9, 2:43 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Springfield MO
243 PM CDT Sun Aug 9 2020

MOZ067-068-078-079-092030-
Cedar MO-Polk MO-Hickory MO-St. Clair MO-
243 PM CDT Sun Aug 9 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN HICKORY...CENTRAL
CEDAR...NORTHWESTERN POLK AND SOUTHERN ST. CLAIR COUNTIES UNTIL 330
PM CDT...

At 242 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 8 miles southwest of Osceola to near El Dorado
Springs. Movement was east at 25 mph.

Half inch hail and wind gusts up to 50 mph will be possible with
these storms.

Locations impacted include...
Stockton Lake...                  El Dorado Springs...
Stockton...                       Humansville...
Hermitage...                      Weaubleau...
Wheatland...                      Collins...
Roscoe...                         Vista...
Gerster...                        Caplinger Mills...
Arnica...                         Filley...
Cedar Springs...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

If on or near Stockton Lake and Pomme de Terre Lake, get out of the
water and move indoors or inside a vehicle. Remember, lightning can
strike out to 10 miles from the parent thunderstorm. If you can hear
thunder, you are close enough to be struck by lightning. Move to
safe shelter now! Do not be caught on the water in a thunderstorm.

&&

LAT...LON 3797 9332 3765 9369 3777 9407 3782 9407
      3801 9386
TIME...MOT...LOC 1942Z 275DEG 23KT 3795 9380 3782 9398

Terry

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 9, 1:21 PM CDT	Areal Flood Advisory	SGF	Vernon	2 hr
Aug 9, 3:59 PM CDT	Special Weather Statement	SGF	St. Clair	31 min
Aug 9, 4:11 PM CDT	Special Weather Statement	SGF	Texas	34 min
Aug 9, 4:18 PM CDT	Severe Thunderstorm Warning	SGF	Texas	57 min
Aug 9, 4:45 PM CDT	Severe Thunderstorm Warning	SGF	Texas	35 min
Aug 9, 6:18 PM CDT	Severe Thunderstorm Warning	SGF	Bourbon	57 min

Nearby

Special Weather Statements in Missouri, 2020 Every special weather statement in 2020

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.