Alert archive / Missouri / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 222, NWS Springfield, MO

July 20, 2015Howell County, Oregon County, Shannon County, Missouri

NWS Springfield, MO issued this severe thunderstorm warning at Jul 20, 2015, 7:21 PM CDT for Howell County, Oregon County, Shannon County, Missouri. It was in force for 39 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 20, 2015, 7:21 PM CDT (00:21 UTC)
Expired
Jul 20, 2015, 8:00 PM CDT
In force
39 min
Issued by
NWS Springfield, MO
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Howell County, MO, Oregon County, MO, Shannon County, MO

The radar

The Springfield radar (KSGF), 168 km from the middle of the area, began a volume at 00:24 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 (KFOE), launched 00:00Z, 0.4 hours before the alert went out and 429 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, Topeka, KS at 00:00Z on 2015-07-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1564 joules per kilogram.LCLEL10008507005003002001001 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, Topeka, KS at 00:00Z on 2015-07-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 3 square meters per square second.193958Sfc1 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
1564 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
1231 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
3 m²/s²
0-3 km storm-relative helicity
49 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 20, 7:05 PM CDT, 16 minutes earlier.

Area forecast discussion, Jul 20, 7:05 PM CDT, 16 minutes before
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Hazardous weather outlook, Jul 20, 3:35 PM CDT, 3 hours 46 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SPRINGFIELD MO
335 PM CDT MON JUL 20 2015

KSZ073-097-101-MOZ055>058-066>071-077>083-088>098-101>106-212045-
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-
335 PM CDT MON JUL 20 2015

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 THUNDERSTORM WIND DAMAGE RISK.
  LIMITED FLOODING RISK.
  ELEVATED LIGHTNING RISK.
  ELEVATED EXCESSIVE HEAT RISK.

DISCUSSION...

  AFTERNOON HEAT INDEX VALUES IN THE 100 TO 108 DEGREE RANGE WILL
  OCCUR THIS AFTERNOON AND EARLY THIS EVENING...WITH THE WARMEST
  READINGS ACROSS EXTREME SOUTHEASTERN KANSAS AND SOUTHERN
  MISSOURI.

  SCATTERED STRONG TO MARGINAL SEVERE STORMS ARE EXPECTED TO
  DEVELOP LATER THIS AFTERNOON AND EVENING. STORMS ARE EXPECTED TO
  DEVELOP NORTH OF HIGHWAY 60 AND MOVE SOUTH INTO THE OVERNIGHT
  HOURS AS A COLD FRONT APPROACHES. THE MAIN CONCERNS WITH THIS
  ACTIVITY WILL BE WIND GUSTS UP TO 55 MPH AND SMALL HAIL. LOCALLY
  HEAVY RAINFALL IS POSSIBLE.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

  THUNDERSTORMS WILL REMAIN POSSIBLE AT TIMES TUESDAY THROUGH
  THURSDAY NIGHT. LOCALLY HEAVY RAINFALL IS POSSIBLE.

  AFTERNOON HEAT INDEX VALUES WILL THEN AGAIN APPROACH 100 DEGREES
  BY THE END OF THIS WEEK INTO THE WEEKEND.

.SPOTTER INFORMATION STATEMENT...

  SPOTTER ACTIVATION WILL NOT BE NEEDED THROUGH TONIGHT.

&&

MORE DETAILED INFORMATION CAN BE ACCESSED AT:
HTTP://WWW.WEATHER.GOV/SGF/SITREP(ALL LOWERCASE)

THIS PRODUCT IN GRAPHICAL FORMAT...ALONG WITH OTHER WEATHER...
HYDROLOGICAL AND CLIMATE INFORMATION...AT
HTTP://WWW.WEATHER.GOV/SGF(ALL LOWERCASE)

GRIFFIN

In the hours before

Special weather statement, Jul 20, 5:24 PM CDT, 1 hour 57 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
524 PM CDT MON JUL 20 2015

MOZ102-103-202245-
BARRY MO-STONE MO-
524 PM CDT MON JUL 20 2015

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL STONE AND NORTHERN BARRY
COUNTIES UNTIL 545 PM CDT...

AT 519 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
A CLUSTER OF STRONG THUNDERSTORM EXTEDNING FROM NEAR PURDY EAST TO
THE GALENA AREA IN STONE COUNTY. STORMS ARE TRACKING EAST AT 20 MPH.

WINDS AROUND 50 MPH ARE EXPECTED WITH THESE STORMS ALONG WITH HEAVY
RAIN.

LOCATIONS IMPACTED INCLUDE BRANSON WEST...BUTTERFIELD...CAPE FAIR...
CRANE...ELSEY...GALENA...JENKINS...MADRY...MCDOWELL...MONETT...
PIONEER...PLEASANT RIDGE...PONCE DE LEON...PURDY...REEDS SPRING...
WHEATON AND WHEELERVILLE.

OTHER LOCATIONS IN THIS SIGNIFICANT WEATHER ADVISORY INCLUDE TABLE
ROCK LAKE.

PEOPLE IN CENTRAL STONE AND NORTHERN BARRY COUNTIES...INCLUDING
PURDY...SHOULD MONITOR THE WEATHER SITUATION CLOSELY. LISTEN FOR
POSSIBLE WARNINGS AND BE PREPARED TO TAKE APPROPRIATE ACTION SHOULD
SEVERE WEATHER THREATEN.

HEAVY RAINS MAY QUICKLY FLOOD LOW LYING AREAS SUCH AS CREEKS...
DITCHES AND UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED
ROADS AS AUTOMOBILES CAN QUICKLY STALL.

LAT...LON 3672 9407 3693 9405 3692 9333 3691 9333
      3691 9334 3682 9334 3682 9333 3667 9333
TIME...MOT...LOC 2221Z 284DEG 18KT 3682 9393

DSA
Special weather statement, Jul 20, 5:57 PM CDT, 1 hour 24 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
557 PM CDT MON JUL 20 2015

MOZ090-202330-
GREENE MO-
557 PM CDT MON JUL 20 2015

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN GREENE COUNTY UNTIL
630 PM CDT...

AT 555 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR CENTRAL SPRINGFIELD...OR 7 MILES NORTH OF
BATTLEFIELD...MOVING EAST AT 20 MPH. PENNY SIZE HAIL...AND WINDS
AROUND 50 MPH ARE EXPECTED WITH THIS STORM.

IF YOU ARE IN THE PATH OF THIS STORM...SEEK SHELTER INDOORS AND STAY
AWAY FROM WINDOWS.

LAT...LON 3729 9308 3709 9307 3716 9347 3733 9339
TIME...MOT...LOC 2257Z 290DEG 16KT 3721 9332

DSA
Local storm report, Jul 20, 6:36 PM CDT, 45 minutes before
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Local storm report, Jul 20, 7:17 PM CDT, 4 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 20, 7:38 PM CDTSevere Thunderstorm WarningSGFHowell, Oregon, Ozark45 min
Jul 21, 2:58 PM CDTSpecial Weather StatementSGFLawrence32 min
Jul 21, 3:18 PM CDTAreal Flood AdvisorySGFBarry, Lawrence6 hr
Jul 21, 3:42 PM CDTSpecial Weather StatementSGFLawrence33 min
Jul 21, 4:24 PM CDTAreal Flood AdvisorySGFChristian, Stone, Taney6 hr
Jul 21, 7:03 AM CDTFlash Flood WarningSGFCherokee, Crawford6 hr

Nearby

Severe Thunderstorm Warnings in Missouri, 2015Every severe thunderstorm warning in 2015

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.