Alert archive / Missouri / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 258, NWS Springfield, MO

July 17, 2019Maries County, Phelps County, Missouri

NWS Springfield, MO issued this severe thunderstorm warning at Jul 17, 2019, 7:40 PM CDT for Maries County, Phelps County, Missouri. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 17, 2019, 7:40 PM CDT (00:40 UTC)
Expired
Jul 17, 2019, 8:15 PM CDT
In force
35 min
Issued by
NWS Springfield, MO
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Maries County, MO, Phelps County, MO

The radar

The St Louis radar (KLSX), 127 km from the middle of the area, began a volume at 00:42 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 00:00Z, 0.7 hours before the alert went out and 212 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 00:00Z on 2019-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2589 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 2019-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -34 square meters per square second.1939Sfc1 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
2589 J/kg
Mixed-layer CIN
-26 J/kg
Mixed-layer LCL
1394 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
-34 m²/s²
0-3 km storm-relative helicity
48 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jul 17, 6:23 PM CDT, 1 hour 17 minutes earlier.

Area forecast discussion, Jul 17, 6:23 PM CDT, 1 hour 17 minutes before
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Hazardous weather outlook, Jul 17, 4:58 PM CDT, 2 hours 42 minutes before
Hazardous Weather Outlook
National Weather Service Springfield MO
458 PM CDT Wed Jul 17 2019

KSZ073-097-101-MOZ055>058-066>071-077>083-088>098-101>106-182200-
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-
458 PM CDT Wed Jul 17 2019

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

.DAY ONE...Tonight.

Weather hazards expected...

  Limited thunderstorm wind damage risk.
  Limited flooding risk.
  Significant lightning risk.
  Extreme excessive heat risk.
  Limited non thunderstorm wind risk.

DISCUSSION...

Scattered showers and thunderstorms are expected this evening
through 8 pm, mainly east of US Highway 65. Isolated storms may
produce localized damaging wind gusts and brief flooding.

Heat index values from 100 to 110 degrees are likely to linger
into early evening.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Afternoon and early evening heat index values from 100 to 110
degrees are likely from Thursday into the weekend.

There is a chance for thunderstorms Sunday afternoon through
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

Hatch

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 17, 7:20 PM CDTSpecial Weather StatementSGFMaries, Phelps40 min
Jul 17, 8:05 PM CDTSpecial Weather StatementSGFPhelps40 min
Jul 17, 9:26 PM CDTSpecial Weather StatementSGFShannon49 min
Jul 17, 9:43 PM CDTAreal Flood AdvisorySGFDent6 hr
Jul 17, 10:24 PM CDTAreal Flood AdvisorySGFDent, Shannon6 hr

Nearby

Severe Thunderstorm Warnings in Missouri, 2019Every severe thunderstorm warning in 2019

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.