Alert archive / Missouri / Special Weather Statements in 2021

Special Weather Statement, NWS Springfield, MO

March 27, 2021Phelps County, Missouri

NWS Springfield, MO issued this special weather statement at Mar 27, 2021, 5:27 PM CDT for Phelps County, Missouri. It was in force for 48 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
Mar 27, 2021, 5:27 PM CDT (22:27 UTC)
Expired
Mar 27, 2021, 6:15 PM CDT
In force
48 min
Issued by
NWS Springfield, MO

County Phelps County, MO

The radar

The Springfield radar (KSGF), 127 km from the middle of the area, began a volume at 22:28 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, 10.5 hours before the alert went out and 173 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-pSkew-T log-p diagram, Springfield, MO at 12:00Z on 2021-03-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 12:00Z on 2021-03-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 312 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1633 m above ground
0-6 km bulk shear
76 kt
0-1 km storm-relative helicity
312 m²/s²
0-3 km storm-relative helicity
312 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Mar 27, 3:20 PM CDT, 2 hours 7 minutes earlier.

Area forecast discussion, Mar 27, 3:20 PM CDT, 2 hours 7 minutes before
Area Forecast Discussion
National Weather Service Springfield MO
320 PM CDT Sat Mar 27 2021

.SHORT TERM...(This evening through Sunday)
Issued at 315 PM CDT Sat Mar 27 2021

Temperatures are topping out in the mid 70s to lower 80s this
afternoon with southwest winds gusting over 20 mph at times over
much of the region. The approaching cold front has moved eastward
and is currently located from Sedalia to Joplin. We are seeing a
decent cumulus field developing on satellite so expect storm
development over the next 2-3 hours mainly along and east of a
Lake of the Ozarks to Cassville line.

Instability continues to increase ahead of the front with surface
based CAPE over 1000 j/kg. 0-6km shear remains from the southwest
at around 50 knots. There is a little more directional wind shear
over south central MO with surface winds backed more to the south,
so went ahead and included a limited tornado risk east of a
Gainesville to Salem line through mid evening. To the west, wind
shear is pretty uni-directional and more indicative of a
straight-line wind threat. Any storms that develop should move
rapidly from southwest to northeast.

By mid to late evening, most of the stronger storms will shift
east of the forecast area as cooler air spreads over the region
behind the passing cold front. Temperatures will likely drop into
the 40s tonight. High pressure spreads across the region on Sunday
with highs mainly in the 60s.

.LONG TERM...(Sunday Night through Saturday)
Issued at 252 PM CDT Sat Mar 27 2021

Dry conditions and a gradual warm-up are expected through Tuesday
before another cold front moves across the area Tuesday night and
Wednesday. At this time, there appears to be very little moisture
to interact with the front, so keeping precipitation accumulations
below a tenth of an inch.

Behind the front, another shot of colder air moves into the region
with highs on Wednesday only reaching the lower/mid 50s and overnight
lows Wednesday night falling to near freezing.

Another warmup is expected toward the end of the week as low
pressure develops over the central high Plains.

&&

.AVIATION...(For the 18Z TAFS through 18Z Sunday afternoon)
Issued at 1208 PM CDT Sat Mar 27 2021

A cold front approaching from the northwest will shift winds from
southwest to northwest during the late afternoon to early evening
at the southwest MO airports. Included vicinity thunder at KSGF
and a few hours to tempo thunderstorms at KBBG mainly from around
22Z to 02Z. We could also see some brief MVFR ceilings at that
time.

&&

.SGF WATCHES/WARNINGS/ADVISORIES...
MO...NONE.
KS...NONE.
&&

SHORT TERM...Terry
LONG TERM...Terry
AVIATION...Terry
Hazardous weather outlook, Mar 27, 2:48 PM CDT, 2 hours 39 minutes before
Hazardous Weather Outlook
National Weather Service Springfield MO
248 PM CDT Sat Mar 27 2021

KSZ073-097-101-MOZ055>058-066>071-077>083-088>098-101>106-282000-
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-
248 PM CDT Sat Mar 27 2021

...Severe Storms Possible Late This Afternoon and Evening...

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 tornado risk.
  Limited hail risk.
  Limited thunderstorm wind damage risk.
  Elevated lightning risk.
  Limited non thunderstorm wind risk.

DISCUSSION...

 Thunderstorms are expected to develop along and south of an
 approaching cold front late this afternoon and evening. The
 strongest storms could produce hail larger than quarter size and
 wind gusts over 60 mph.

 There will be a limited risk for tornadoes over south central
 Missouri through mid evening, mainly along and east of a line
 from Gainesville to Salem, where more instability is located.

 Storms will shift to the east of the Missouri Ozarks tonight.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

  Southerly wind gusts over 30 mph are expected on Monday across
  western Missouri and southeast Kansas as low pressure develops
  across the central high Plains.

  Thunderstorms will be possible from Tuesday night into
  Wednesday morning.

.SPOTTER INFORMATION STATEMENT...

  Spotter activation may be needed later today and this evening
  for locations along and east of a line from Rolla to Branson.

&&

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

Terry

In the hours before

Special weather statement, Mar 27, 5:10 PM CDT, 17 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, Mar 27, 5:27 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.

IssuedProductOfficeCountiesLasted
Mar 27, 5:10 PM CDTSpecial Weather StatementSGFPhelps50 min
Mar 27, 5:31 PM CDTAreal Flood AdvisorySGFWright3 hr
Mar 27, 5:46 PM CDTSpecial Weather StatementSGFOzark44 min
Mar 27, 6:07 PM CDTAreal Flood AdvisorySGFDent, Phelps, Pulaski, Texas3 hr
Mar 27, 6:46 PM CDTSpecial Weather StatementSGFChristian44 min

Nearby

Special Weather Statements in Missouri, 2021Every 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.