Alert archive / Missouri / Special Weather Statements in 2011

Special Weather Statement, NWS Springfield, MO

April 9, 2011Greene County, Missouri

NWS Springfield, MO issued this special weather statement at Apr 9, 2011, 8:09 AM CDT for Greene County, Missouri. It was in force for 36 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: Apr 9, 2011, 8:09 AM CDT (13:09 UTC)
Expired: Apr 9, 2011, 8:45 AM CDT
In force: 36 min
Issued by: NWS Springfield, MO

County Greene County, MO

The radar

The Springfield radar (KSGF), 28 km from the middle of the area, began a volume at 13:12 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

Little Rock, AR (KLZK), launched 12:00Z, 1.2 hours before the alert went out and 394 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: 1093 J/kg
Mixed-layer CIN: -196 J/kg
Mixed-layer LCL: 1029 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 266 m²/s²
0-3 km storm-relative helicity: 245 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.2

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 Apr 9, 6:53 AM CDT, 1 hour 16 minutes earlier.

Area forecast discussion, Apr 9, 6:53 AM CDT, 1 hour 16 minutes before

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Hazardous weather outlook, Apr 9, 5:20 AM CDT, 2 hours 49 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SPRINGFIELD MO
520 AM CDT SAT APR 9 2011

KSZ073-097-101-MOZ055>058-066>071-077>083-088>098-101>106-101030-
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-
520 AM CDT SAT APR 9 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF THE MISSOURI
OZARKS AND EXTREME SOUTHEAST KANSAS.

.DAY ONE...TODAY AND TONIGHT.

THE HAZARDOUS WEATHER RISK LEVEL IS...LIMITED.

WEATHER HAZARDS EXPECTED...

 LIMITED RISK OF LIGHTNING.
 LIMITED RISK OF NON THUNDERSTORM WINDS.

DISCUSSION...

 THUNDERSTORMS WILL CONTINUE TO DEVELOP AND MOVE TO THE EAST ROUGHLY
 ALONG AND SOUTH OF THE INTERSTATE 44 CORRIDOR. THIS ACTIVITY WILL
 CONTINUE TO MOVE EAST ACROSS MUCH OF SOUTHERN MISSOURI EARLY THIS
 MORNING. THE PRIMARY RISK WITH THE STORMS WILL BE LIGHTNING. IN
 ADDITION...STRONG NON THUNDERSTORM WINDS WILL DEVELOP BEHIND THE
 STORMS THIS MORNING WITH LOCALLY GUSTY WINDS POSSIBLE.

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

  STRONG TO SEVERE STORMS ARE EXPECTED ACROSS THE OUTLOOK AREA
  SUNDAY AFTERNOON AND EVENING AS A STRONG STORM SYSTEM MOVES
  INTO THE PLAINS. THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG
  AND AHEAD OF A DRY LINE THAT WILL MOVE EAST FROM KANSAS AND
  OKLAHOMA. MODERATE INSTABILITY AND STRONG VERTICAL WIND SHEAR
  WILL ALLOW FOR SEVERE STORM ORGANIZATION WITH THE POTENTIAL OF
  LARGE HAIL AND DAMAGING WINDS. THE RISK FOR TORNADOES CANNOT BE
  RULED OUT.

  GUSTY NON THUNDERSTORM WINDS ARE ALSO EXPECTED AT TIMES
  SATURDAY...SUNDAY...AND MONDAY. AN ELEVATED FIRE DANGER MAY
  EXIST SUNDAY DEPENDING ON THE TIMING OF THE DRY LINE PASSAGE.
  LOW HUMIDITY AND MODERATELY GUSTY WINDS MAY PRODUCE AN ELEVATED
  FIRE DANGER MONDAY IN SOME AREAS.

.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)

HATCH

In the hours before

Local storm report, Apr 9, 6:47 AM CDT, 1 hour 22 minutes before

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Special weather statement, Apr 9, 7:18 AM CDT, 51 minutes before

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Special weather statement, Apr 9, 7:30 AM CDT, 39 minutes before

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Local storm report, Apr 9, 7:44 AM CDT, 25 minutes before

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Special weather statement, Apr 9, 7:47 AM CDT, 22 minutes before

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Special weather statement, Apr 9, 8:09 AM 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
Apr 9, 12:45 AM CDT	Severe Thunderstorm Warning	SGF	Barton, Jasper	45 min
Apr 9, 1:18 AM CDT	Severe Thunderstorm Warning	SGF	Cedar, Dade	42 min
Apr 9, 1:32 AM CDT	Special Weather Statement	SGF	Barton	28 min
Apr 9, 1:57 AM CDT	Severe Thunderstorm Warning	SGF	Cedar, Dade, Hickory, Polk, St. Clair	48 min
Apr 9, 2:49 AM CDT	Special Weather Statement	SGF	Lawrence, Newton	41 min
Apr 9, 3:28 AM CDT	Special Weather Statement	SGF	Barry, McDonald, Newton	47 min
Apr 9, 3:35 AM CDT	Special Weather Statement	SGF	Christian, Stone	40 min
Apr 9, 3:43 AM CDT	Severe Thunderstorm Warning	SGF	Christian, Stone	47 min
Apr 9, 4:03 AM CDT	Severe Thunderstorm Warning	SGF	Barry	27 min
Apr 9, 4:40 AM CDT	Special Weather Statement	SGF	Douglas, Ozark	50 min
Apr 9, 6:27 AM CDT	Special Weather Statement	SGF	Taney	33 min
Apr 9, 6:31 AM CDT	Severe Thunderstorm Warning	SGF	Taney	29 min
Apr 9, 7:18 AM CDT	Special Weather Statement	SGF	Ozark	27 min
Apr 9, 7:30 AM CDT	Special Weather Statement	SGF	Greene	30 min
Apr 9, 7:47 AM CDT	Special Weather Statement	SGF	Ozark	28 min
Apr 9, 12:37 AM CDT	Severe Thunderstorm Warning	SGF	Cherokee, Crawford	38 min

Nearby

Special Weather Statements in Missouri, 2011 Every special weather statement in 2011

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.