Alert archive / Missouri / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 292, NWS Springfield, MO

December 31, 2010Oregon County, Missouri

NWS Springfield, MO issued this severe thunderstorm warning at Dec 31, 2010, 12:27 PM CST for Oregon 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 counties it named.

The facts

Issued: Dec 31, 2010, 12:27 PM CST (18:27 UTC)
Expired: Dec 31, 2010, 1:00 PM CST
In force: 33 min
Issued by: NWS Springfield, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Oregon County, MO

The radar

The Springfield radar (KSGF), 188 km from the middle of the area, began a volume at 18:28 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Dec 31, 7:29 AM CST	Tornado Watch	SPC	8 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 6.5 hours before the alert went out and 215 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: 764 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 569 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 535 m²/s²
0-3 km storm-relative helicity: 546 m²/s²
Significant tornado parameter: 2.9
Supercell composite: 10.7

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 Dec 31, 11:30 AM CST, 57 minutes earlier.

Area forecast discussion, Dec 31, 11:30 AM CST, 57 minutes before

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Hazardous weather outlook, Dec 31, 4:57 AM CST, 7 hours 30 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SPRINGFIELD MO
457 AM CST FRI DEC 31 2010

KSZ073-097-101-MOZ055>058-066>071-077>083-088>098-101>106-011100-
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-
457 AM CST FRI DEC 31 2010

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...EXTREME.

WEATHER HAZARDS EXPECTED...

  LIMITED TORNADO RISK.
  ELEVATED HAIL RISK.
  ELEVATED THUNDERSTORM WIND DAMAGE RISK.
  LIMITED FLOODING RISK.
  ELEVATED LIGHTNING RISK.
  LIMITED EXTREME COLD RISK.
  ELEVATED NON-THUNDERSTORM WIND RISK.
  EXTREME FIRE WEATHER DANGER.

DISCUSSION...

A LINE OF THUNDERSTORMS WILL MOVE ACROSS THE AREA BEGINNING EARLY
THIS MORNING AND PERSISTING THROUGH THE AFTERNOON HOURS ALONG AND
AHEAD OF A DRYLINE. THESE THUNDERSTORMS HAVE THE POTENTIAL TO BE
STRONG TO SEVERE...WITH DAMAGING STRAIGHT LINE WINDS...LARGE HAIL
TO THE SIZE OF QUARTERS...AND AN ISOLATED...BRIEF TORNADO ALL
POSSIBLE. WHILE SEVERE WEATHER WILL BE POSSIBLE OVER THE ENTIRE
OUTLOOK AREA TODAY...THE GREATEST CONCENTRATION OF THUNDERSTORMS
WILL LIKELY BE ALONG AND WEST OF U.S. 65 DURING THE MORNING AND
EARLY AFTERNOON HOURS. WHILE NOT EXPECTED TO BE A WIDESPREAD
THREAT...LOCALIZED SHORT TERM FLOODING OF LOW WATER CROSSINGS AND
OTHER FLOOD PRONE AREAS WILL ALSO BE A POSSIBILITY WITH THE LINE OF
THUNDERSTORMS.

AS THE DRYLINE PASSES...SKIES ARE EXPECTED TO CLEAR AND WEST
SOUTHWEST WINDS WILL BE SUSTAINED BETWEEN 25 AND 35 MPH...WITH
GUSTS AS HIGH AS 40 TO 45 MPH AT TIMES. THE BEST CHANCE FOR STRONG
NON THUNDERSTORM WINDS WILL BE ALONG AND WEST OF U.S. 65...AND A
WIND ADVISORY IS IN EFFECT FOR THIS AREA FROM 900 AM CST THIS
MORNING UNTIL 500 PM CST THIS AFTERNOON.

IN ADDITION TO THE VERY GUSTY WINDS...RELATIVE HUMIDITY VALUES ARE
EXPECTED TO DROP RAPIDLY AS VERY DRY AIR MOVES IN BEHIND THE
DRYLINE. THESE LOW RELATIVE HUMIDITY VALUES...COMBINED WITH THE
GUSTY WINDS...WILL YIELD A SIGNIFICANT TO EXTREME FIRE WEATHER
DANGER THIS AFTERNOON OVER MAINLY FAR SOUTHWESTERN MISSOURI. A RED
FLAG WARNING IS IN EFFECT FOR THIS AREA FROM NOON UNTIL 600 PM.

BY LATE THIS AFTERNOON AND INTO THIS EVENING...A STRONG COLD FRONT
WILL SWEEP ACROSS THE AREA FROM WEST TO EAST...EVENTUALLY
OVERTAKING THE DRYLINE OVER THE EASTERN OZARKS. AS THIS COLD
FRONT PASSES...VERY COLD AIR WILL BEGIN TO SPILL INTO THE
AREA....WITH TEMPERATURES DROPPING RAPIDLY LATE TONIGHT. WIND
CHILL VALUES ARE EXPECTED TO DROP INTO THE SINGLE DIGITS BY
DAYBREAK SATURDAY ALONG AND NORTH OF INTERSTATE 44...AND INTO THE
TEENS TO THE SOUTH.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

THERE WILL BE A LIMITED THREAT OF EXTREME COLD ALONG AND NORTH OF
INTERSTATE 44 FOR SATURDAY AND SUNDAY...WITH HIGH TEMPERATURES IN
THE 30S...LOWS IN THE TEENS AND 20S AND WIND CHILL VALUES IN THE
SINGLE DIGITS TO MIDDLE TEENS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS LIKELY ALONG AND WEST OF U.S. 65 THROUGH
NOON TODAY...AND MAY BE POSSIBLE LATER THIS AFTERNOON EAST OF U.S.
65.

&&

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)

BOXELL

In the hours before

Local storm report, Dec 31, 10:39 AM CST, 1 hour 48 minutes before

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Local storm report, Dec 31, 10:52 AM CST, 1 hour 35 minutes before

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Local storm report, Dec 31, 10:53 AM CST, 1 hour 34 minutes before

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Local storm report, Dec 31, 11:06 AM CST, 1 hour 21 minutes before

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Special weather statement, Dec 31, 11:42 AM CST, 45 minutes before

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Local storm report, Dec 31, 12:18 PM CST, 9 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
Dec 30, 10:56 PM CST	Severe Thunderstorm Warning	SGF	Barry, Stone, Taney	49 min
Dec 31, 12:04 AM CST	Severe Thunderstorm Warning	SGF	Christian, Greene, Webster	26 min
Dec 31, 12:21 AM CST	Tornado Warning	SGF	Christian, Webster	24 min
Dec 31, 12:22 AM CST	Tornado Warning	SGF	Stone, Taney	23 min
Dec 31, 12:55 AM CST	Flash Flood Warning	SGF	Christian, Greene, Webster	6 hr
Dec 31, 1:19 AM CST	Severe Thunderstorm Warning	SGF	Camden, Laclede, Pulaski	41 min
Dec 31, 1:43 AM CST	Severe Thunderstorm Warning	SGF	Laclede, Wright	32 min
Dec 31, 1:48 AM CST	Flash Flood Warning	SGF	Camden, Laclede, Pulaski, Wright	5 hr
Dec 31, 1:55 AM CST	Severe Thunderstorm Warning	SGF	Maries, Miller, Phelps, Pulaski	35 min
Dec 31, 2:02 AM CST	Severe Thunderstorm Warning	SGF	Camden, Laclede, Pulaski	43 min
Dec 31, 2:09 AM CST	Severe Thunderstorm Warning	SGF	Maries, Phelps	36 min
Dec 31, 2:26 AM CST	Severe Thunderstorm Warning	SGF	Maries, Miller, Phelps, Pulaski	34 min
Dec 31, 2:46 AM CST	Severe Thunderstorm Warning	SGF	Maries, Phelps	29 min
Dec 31, 3:55 AM CST	Wind Advisory	SGF	Barry, Barton, Benton, Cedar, Christian, Dade and 13 more	12 hr
Dec 31, 3:57 AM CST	Red Flag Warning	SGF	Barry, Christian, Jasper, Lawrence, McDonald, Newton and 2 more	12 hr
Dec 31, 6:32 AM CST	Severe Thunderstorm Warning	SGF	Barton, Cedar, Dade, Jasper	43 min
Dec 31, 6:36 AM CST	Areal Flood Advisory	SGF	Jasper, Newton	3 hr
Dec 31, 7:03 AM CST	Severe Thunderstorm Warning	SGF	Cedar, Dade, Polk	42 min
Dec 31, 7:20 AM CST	Severe Thunderstorm Warning	SGF	Barry, Christian, Stone	25 min
Dec 31, 7:25 AM CST	Severe Thunderstorm Warning	SGF	Benton, Hickory, St. Clair	45 min
Dec 31, 7:33 AM CST	Tornado Warning	SGF	Barry, Christian, Stone	27 min
Dec 31, 7:34 AM CST	Tornado Warning	SGF	Barry, Stone, Taney	41 min
Dec 31, 7:36 AM CST	Tornado Warning	SGF	Hickory, Polk	39 min
Dec 31, 7:56 AM CST	Severe Thunderstorm Warning	SGF	Christian, Greene, Webster	34 min
Dec 31, 7:57 AM CST	Tornado Warning	SGF	Benton, Hickory	12 min
Dec 31, 8:05 AM CST	Tornado Warning	SGF	Christian, Taney	40 min
Dec 31, 8:12 AM CST	Tornado Warning	SGF	Dade, Polk	33 min
Dec 31, 8:27 AM CST	Severe Thunderstorm Warning	SGF	Webster, Wright	33 min
Dec 31, 8:32 AM CST	Tornado Warning	SGF	Christian, Douglas	28 min
Dec 31, 8:59 AM CST	Severe Thunderstorm Warning	SGF	Laclede, Pulaski, Wright	46 min
Dec 31, 9:00 AM CST	Severe Thunderstorm Warning	SGF	Wright	21 min
Dec 31, 9:06 AM CST	Tornado Warning	SGF	Laclede, Wright	23 min
Dec 31, 9:13 AM CST	Tornado Warning	SGF	Texas, Wright	47 min
Dec 31, 9:22 AM CST	Tornado Warning	SGF	Laclede, Phelps, Pulaski, Texas	53 min
Dec 31, 9:54 AM CST	Tornado Warning	SGF	Dent, Phelps, Texas	51 min
Dec 31, 10:31 AM CST	Severe Thunderstorm Warning	SGF	Dent	44 min
Dec 31, 10:38 AM CST	Severe Thunderstorm Warning	SGF	Dent, Howell, Shannon, Texas	67 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2010 Every severe thunderstorm warning in 2010

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.