Alert archive / Missouri / Special Weather Statements in 2011
Special Weather Statement, NWS Springfield, MO
NWS Springfield, MO issued this special weather statement at Apr 21, 2011, 3:44 PM CDT for Christian County, Missouri. It was in force for 31 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 21, 2011, 3:44 PM CDT (20:44 UTC)
- Expired
- Apr 21, 2011, 4:15 PM CDT
- In force
- 31 min
- Issued by
- NWS Springfield, MO
County Christian County, MO
The radar
The Springfield radar (KSGF), 49 km from the middle of the area, began a volume at 20:44 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, 8.7 hours before the alert went out and 56 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1583 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 289 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</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 Apr 21, 2:53 PM CDT, 51 minutes earlier.
Area forecast discussion, Apr 21, 2:53 PM CDT, 51 minutes before
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HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SPRINGFIELD MO 1258 PM CDT THU APR 21 2011 KSZ073-097-101-MOZ055>058-066>071-077>083-088>098-101>106-221800- 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- 1258 PM CDT THU APR 21 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF THE MISSOURI OZARKS AND EXTREME SOUTHEAST KANSAS. .DAY ONE...THIS AFTERNOON AND TONIGHT. THE HAZARDOUS WEATHER RISK LEVEL IS...SIGNIFICANT. WEATHER HAZARDS EXPECTED... HAIL RISK IS ELEVATED RISK TONIGHT. LIGHTNING RISK IS SIGNIFICANT THIS AFTERNOON AND TONIGHT. DISCUSSION... THUNDERSTORMS WILL SPREAD ACROSS EXTREME SOUTHEAST KANSAS AND THE MISSOURI OZARKS LATER THIS AFTERNOON AND EVENING. A FEW STORMS COULD PRODUCE HAIL UP TO THE SIZE OF QUARTERS. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. AN ELEVATED RISK OF SEVERE WEATHER WILL PERSIST INTO FRIDAY AND FRIDAY NIGHT. A COLD FRONT WILL MOVE INTO THE REGION FROM THE NORTHWEST. ABUNDANT GULF MOISTURE...MODERATE INSTABILITY AND SUFFICIENT WIND SHEAR WILL BE IN PLACE TO SUPPORT THE DEVELOPMENT OF STRONG TO SEVERE THUNDERSTORMS FRIDAY AFTERNOON INTO FRIDAY NIGHT. THE PRIMARY SEVERE WEATHER RISKS WILL BE DAMAGING WIND GUSTS AND LARGE HAIL...ALTHOUGH THE RISK FOR A COUPLE OF TORNADOES CANNOT BE RULED OUT. OUR WEATHER PATTERN WILL REMAIN VERY ACTIVE THROUGH THE UPCOMING WEEKEND AND INTO NEXT WEEK AS A SURFACE FRONT BECOMES NEARLY STATIONARY ACROSS THE MIDWEST. SEVERAL ROUNDS OF RAIN AND THUNDERSTORMS ARE EXPECTED. WIDESPREAD RAINFALL OF THREE TO SIX INCHES...WITH LOCALLY HIGHER AMOUNTS IS EXPECTED. THIS WILL RESULT IN AN INCREASING RISK FOR FLASH FLOODING AND RIVER FLOODING ACROSS THE OUTLOOK AREA. LOCAL INTERESTS ARE URGED TO MONITOR THE LATEST FORECASTS FROM YOUR NATIONAL WEATHER SERVICE IN SPRINGFIELD MISSOURI REGARDING THE POTENTIAL FOR EXCESSIVE RAINFALL AND RESULTANT RISK OF FLOODING. .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) CRAMER
In the hours before
Special weather statement, Apr 21, 2:48 PM CDT, 56 minutes before
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</html>The office that day
Everything else NWS Springfield, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 21, 1:22 PM CDT | Flash Flood Watch | SGF | Barry, Barton, Camden, Cedar, Christian, Dade and 24 more | 6 days |
| Apr 21, 2:43 PM CDT | Severe Thunderstorm Warning | SGF | Barry, Stone | 62 min |
| Apr 21, 3:26 PM CDT | Special Weather Statement | SGF | Jasper | 64 min |
| Apr 21, 4:14 PM CDT | Special Weather Statement | SGF | Hickory | 31 min |
| Apr 21, 4:18 PM CDT | Special Weather Statement | SGF | Webster | 27 min |
| Apr 21, 5:51 PM CDT | Areal Flood Advisory | SGF | Barry, McDonald | 4 hr |
| Apr 21, 5:56 PM CDT | Special Weather Statement | SGF | St. Clair | 34 min |
| Apr 21, 2:48 PM CDT | Special Weather Statement | SGF | Cherokee | 27 min |
Nearby
Special Weather Statements in Missouri, 2011Every 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.