Alert archive / Missouri / Special Weather Statements in 2013

Special Weather Statement, NWS Springfield, MO

July 20, 2013Shannon County, Missouri

NWS Springfield, MO issued this special weather statement at Jul 20, 2013, 3:12 PM CDT for Shannon County, Missouri. It was in force for 33 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: Jul 20, 2013, 3:12 PM CDT (20:12 UTC)
Expired: Jul 20, 2013, 3:45 PM CDT
In force: 33 min
Issued by: NWS Springfield, MO

County Shannon County, MO

The radar

The Springfield radar (KSGF), 168 km from the middle of the area, began a volume at 20:13 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, 8.2 hours before the alert went out and 208 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: 672 J/kg
Mixed-layer CIN: -114 J/kg
Mixed-layer LCL: 1380 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 54 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 Jul 20, 2:43 PM CDT, 29 minutes earlier.

Area forecast discussion, Jul 20, 2:43 PM CDT, 29 minutes before

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Hazardous weather outlook, Jul 20, 12:26 PM CDT, 2 hours 46 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SPRINGFIELD MO
1226 PM CDT SAT JUL 20 2013

KSZ073-097-101-MOZ055>058-066>071-077>083-088>098-101>106-211730-
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-
1226 PM CDT SAT JUL 20 2013

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.
  ELEVATED LIGHTNING RISK.
  LIMITED EXCESSIVE HEAT RISK.

DISCUSSION...

  HEAT INDICES WILL REACH THE UPPER 90S AND APPROACH 100 DEGREES
  THIS AFTERNOON.

  SCATTERED THUNDERSTORMS WILL DEVELOP THIS AFTERNOON INTO THIS
  EVENING AS A FRONTAL SYSTEM SAGS INTO SOUTHERN MISSOURI. A FEW
  OF THESE STORMS COULD PRODUCE DAMAGING DOWNBURST WIND GUSTS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

  THERE WILL BE SEVERAL CHANCES FOR THUNDERSTORMS FROM SUNDAY
  THROUGH MOST OF NEXT WEEK. THE OZARKS WILL BECOME POSITIONED
  WITHIN A FAVORABLE PATTERN FOR BOTH NOCTURNAL AND AFTERNOON
  THUNDERSTORMS.

.SPOTTER INFORMATION STATEMENT...

  SPOTTER ACTIVATION WILL NOT BE NEEDED THROUGH TONIGHT.

&&

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

GRIFFIN

In the hours before

Special weather statement, Jul 20, 2:16 PM CDT, 56 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
216 PM CDT SAT JUL 20 2013

MOZ081-201945-
LACLEDE MO-
216 PM CDT SAT JUL 20 2013

...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL LACLEDE COUNTY
UNTIL 245 PM CDT...

AT 214 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR TWIN BRIDGES...OR 11 MILES SOUTH OF
LEBANON...MOVING SOUTH AT 5 MPH. PENNY SIZE HAIL...AND GUSTY WINDS
UP TO 50 MPH ARE EXPECTED WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE TWIN BRIDGES.

LAT...LON 3748 9267 3756 9269 3764 9259 3761 9248
      3752 9246 3748 9252 3748 9263
TIME...MOT...LOC 1916Z 351DEG 3KT 3752 9261

GRIFFIN

Special weather statement, Jul 20, 2:26 PM CDT, 46 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
226 PM CDT SAT JUL 20 2013

MOZ090-202000-
GREENE MO-
226 PM CDT SAT JUL 20 2013

...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL GREENE COUNTY UNTIL
300 PM CDT...

AT 224 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 3 MILES NORTH OF REPUBLIC...MOVING EAST AT 5 MPH.
PENNY SIZE HAIL...AND GUSTY WINDS UP TO 50 MPH ARE EXPECTED
WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE BATTLEFIELD...REPUBLIC AND WESTERN
SPRINGFIELD.

INTERSTATE 44 BETWEEN MILE MARKERS 62 AND 71 WILL ALSO BE IMPACTED BY
THIS STORM.

LAT...LON 3714 9357 3723 9355 3726 9345 3720 9335
      3710 9337 3710 9348
TIME...MOT...LOC 1926Z 279DEG 3KT 3717 9347

GRIFFIN

Special weather statement, Jul 20, 2:39 PM CDT, 33 minutes before

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Special weather statement, Jul 20, 2:54 PM CDT, 18 minutes before

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Special weather statement, Jul 20, 3:01 PM CDT, 11 minutes before

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Special weather statement, Jul 20, 3:12 PM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 20, 1:11 PM CDT	Special Weather Statement	SGF	Lawrence	49 min
Jul 20, 1:34 PM CDT	Special Weather Statement	SGF	Douglas	26 min
Jul 20, 1:46 PM CDT	Severe Thunderstorm Warning	SGF	Douglas	29 min
Jul 20, 2:01 PM CDT	Special Weather Statement	SGF	Lawrence	29 min
Jul 20, 2:14 PM CDT	Special Weather Statement	SGF	Texas	31 min
Jul 20, 2:16 PM CDT	Special Weather Statement	SGF	Laclede	29 min
Jul 20, 2:26 PM CDT	Special Weather Statement	SGF	Greene	34 min
Jul 20, 2:39 PM CDT	Special Weather Statement	SGF	Christian	36 min
Jul 20, 2:50 PM CDT	Severe Thunderstorm Warning	SGF	Christian, Taney	25 min
Jul 20, 2:54 PM CDT	Special Weather Statement	SGF	Stone	36 min
Jul 20, 3:01 PM CDT	Special Weather Statement	SGF	Texas	29 min
Jul 20, 3:02 PM CDT	Severe Thunderstorm Warning	SGF	Texas	28 min
Jul 20, 3:36 PM CDT	Special Weather Statement	SGF	Texas	24 min
Jul 20, 3:41 PM CDT	Special Weather Statement	SGF	Laclede	34 min
Jul 20, 3:46 PM CDT	Special Weather Statement	SGF	Texas	29 min
Jul 20, 4:15 PM CDT	Special Weather Statement	SGF	Webster	30 min
Jul 20, 5:07 PM CDT	Special Weather Statement	SGF	Polk	38 min
Jul 20, 6:16 PM CDT	Special Weather Statement	SGF	Vernon	44 min
Jul 20, 6:30 PM CDT	Special Weather Statement	SGF	Dade	30 min
Jul 20, 6:51 PM CDT	Severe Thunderstorm Warning	SGF	Barton, Dade, Jasper, Lawrence	39 min
Jul 20, 6:54 PM CDT	Special Weather Statement	SGF	McDonald	36 min
Jul 20, 5:37 PM CDT	Special Weather Statement	SGF	Bourbon	38 min

Nearby

Special Weather Statements in Missouri, 2013 Every special weather statement in 2013

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.