Alert archive / Missouri / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 178, NWS Springfield, MO

July 20, 20104 counties in Missouri

NWS Springfield, MO issued this severe thunderstorm warning at Jul 20, 2010, 9:28 PM CDT for 4 counties in Missouri. It was in force for 62 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, 2010, 9:28 PM CDT (02:28 UTC)
Expired
Jul 20, 2010, 10:30 PM CDT
In force
62 min
Issued by
NWS Springfield, MO
Area
Storm-based polygon
Hail
0.5 in
Wind
60.0 mph

Counties Maries County, MO, Miller County, MO, Phelps County, MO, Pulaski County, MO

The radar

The St Louis radar (KLSX), 144 km from the middle of the area, began a volume at 02:30 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.

IssuedProductOfficeLasted
Jul 20, 3:32 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 2.5 hours before the alert went out and 196 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, Springfield, MO at 00:00Z on 2010-07-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2061 joules per kilogram.LCLLFCEL10008507005003002001001 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, Springfield, MO at 00:00Z on 2010-07-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -41 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
2061 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
1390 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-41 m²/s²
0-3 km storm-relative helicity
14 m²/s²
Significant tornado parameter
-0.1
Supercell composite
-0.7

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 Jul 20, 8:31 PM CDT, 57 minutes earlier.

Area forecast discussion, Jul 20, 8:31 PM CDT, 57 minutes before
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Hazardous weather outlook, Jul 20, 6:56 PM CDT, 2 hours 32 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SPRINGFIELD MO
656 PM CDT TUE JUL 20 2010

KSZ073-097-101-MOZ055>058-066>071-077>083-088>098-101>106-220000-
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-
656 PM CDT TUE JUL 20 2010

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

.DAY ONE...TONIGHT.

  THE HAZARDOUS WEATHER RISK LEVEL IS...EXTREME.

WEATHER HAZARDS EXPECTED...

  EXTREME EXCESSIVE HEAT RISK.
  ELEVATED THUNDERSTORM WIND RISK FOR GUSTS TO 60 MPH.
  LIMITED HAIL RISK FOR HAIL TO THE SIZE OF QUARTERS.
  ELEVATED LIGHTNING RISK.

DISCUSSION...

AFTERNOON TEMPERATURES ONCE AGAIN REACHED THE UPPER 80S TO MID 90S
WITH HEAT INDEX VALUES INTO THE UPPER 90S TO 106 DEGREES. EVENING
HEAT INDEX VALUES WILL REMAIN IN THE 90S TO AROUND 100 DEGREES.

A THUNDERSTORM COMPLEX OVER CENTRAL MISSOURI WILL CONTINUE TO
TRACK SOUTHEAST AFFECTING MAINLY AREAS EAST OF A SCHELL CITY TO
EMINENCE LINE THIS EVENING. WIND GUSTS IN EXCESS OF 60 MPH WILL BE
POSSIBLE OVER CENTRAL MISSOURI THIS EVENING IN ADDITION TO A
LIMITED HAIL RISK TO THE SIZE OF QUARTERS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

  EXCESSIVE HEAT WILL CONTINUE THROUGH THE REST OF THE WORK WEEK.
  HEAT INDEX VALUES IN THE 100 TO 108 DEGREE RANGE WILL BE
  COMMON EACH AFTERNOON.

  THUNDERSTORMS WILL AGAIN BE POSSIBLE FROM FRIDAY INTO TUESDAY.

.SPOTTER INFORMATION STATEMENT...

 SPOTTER ACTIVATION MAY BE NEEDED OVER CENTRAL MISSOURI THIS EVENING.

&&

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)

LINDENBERG

In the hours before

Special weather statement, Jul 20, 6:43 PM CDT, 2 hours 45 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
643 PM CDT TUE JUL 20 2010

MOZ055-056-067-068-210030-
HICKORY MO-ST. CLAIR MO-BENTON MO-MORGAN MO-
643 PM CDT TUE JUL 20 2010

...SIGNIFICANT WEATHER ALERT FOR BENTON...NORTH CENTRAL HICKORY...
NORTHERN ST. CLAIR AND WEST CENTRAL MORGAN COUNTIES UNTIL 730 PM
CDT...

AT 640 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 14 MILES NORTHWEST
OF BRANDON TO 15 MILES WEST OF BRANDON TO 13 MILES NORTH OF APPLETON
CITY...MOVING SOUTHEAST AT 40 MPH. STRONG WINDS TO NEAR 50 MPH ARE
EXPECTED. THESE WINDS WILL OCCUR WELL AHEAD OF ANY RAINFALL.

LOCATIONS IMPACTED INCLUDE APPLETON CITY...COLE CAMP...LINCOLN...
LOWRY CITY...OSCEOLA AND WARSAW.

OTHER LOCATIONS IN THIS SIGNIFICANT WEATHER ALERT INCLUDE LAKE OF THE
OZARKS AND TRUMAN LAKE.

PEOPLE IN BENTON...NORTHERN HICKORY...NORTHERN ST. CLAIR AND WESTERN
MORGAN COUNTIES...INCLUDING LINCOLN...APPLETON CITY...COLE CAMP...
WARSAW...TRUMAN LAKE...LOWRY CITY...OSCEOLA AND LAKE OF THE OZARKS...
SHOULD MONITOR THE WEATHER SITUATION CLOSELY. LISTEN FOR POSSIBLE
WARNINGS AND BE PREPARED TO TAKE APPROPRIATE ACTION SHOULD SEVERE
WEATHER THREATEN.

THESE STORMS ARE PRODUCING NEARLY CONTINUOUS CLOUD TO GROUND
LIGHTNING. SEEK SHELTER INDOORS IMMEDIATELY AND STAY AWAY FROM
WINDOWS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT
TUESDAY EVENING FOR WEST CENTRAL MISSOURI.

BOXELL
Special weather statement, Jul 20, 7:25 PM CDT, 2 hours 3 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
725 PM CDT TUE JUL 20 2010

MOZ066>068-077-078-210130-
BARTON MO-CEDAR MO-VERNON MO-HICKORY MO-ST. CLAIR MO-
725 PM CDT TUE JUL 20 2010

...SIGNIFICANT WEATHER ALERT FOR HICKORY...NORTH CENTRAL BARTON...
NORTHWESTERN CEDAR...ST. CLAIR AND VERNON COUNTIES UNTIL 830 PM
CDT...

AT 722 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 24 MILES NORTH OF
ICONIUM TO 8 MILES NORTH OF METZ...MOVING SOUTH AT 25 MPH. WINDS
AROUND 50 MPH ARE EXPECTED WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE APPLETON CITY...EL DORADO SPRINGS...
HERMITAGE...LOWRY CITY...NEVADA...OSCEOLA...SCHELL CITY...SHELDON...
VERDELLA...WALKER...WEAUBLEAU AND WHEATLAND.

OTHER LOCATIONS IN THIS SIGNIFICANT WEATHER ALERT INCLUDE POMME DE
TERRE LAKE AND TRUMAN LAKE.

PEOPLE IN HICKORY...NORTHERN BARTON...NORTHWESTERN CEDAR...ST. CLAIR
AND VERNON COUNTIES...INCLUDING APPLETON CITY...SCHELL CITY...LOWRY
CITY...WALKER...NEVADA...TRUMAN LAKE...OSCEOLA AND EL DORADO
SPRINGS...SHOULD MONITOR THE WEATHER SITUATION CLOSELY. LISTEN FOR
POSSIBLE WARNINGS AND BE PREPARED TO TAKE APPROPRIATE ACTION SHOULD
SEVERE WEATHER THREATEN.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT
TUESDAY EVENING FOR WEST CENTRAL MISSOURI.

BOXELL
Local storm report, Jul 20, 8:40 PM CDT, 48 minutes before
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Local storm report, Jul 20, 8:45 PM CDT, 43 minutes before
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Local storm report, Jul 20, 8:49 PM CDT, 39 minutes before
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Special weather statement, Jul 20, 9:22 PM CDT, 6 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 20, 7:43 PM CDTSevere Thunderstorm WarningSGFBenton, Camden, Hickory, Miller, Morgan34 min
Jul 21, 3:08 PM CDTSevere Thunderstorm WarningSGFDallas, Greene, Webster67 min
Jul 21, 5:39 PM CDTFlash Flood WarningSGFDent, Phelps, Pulaski4 hr
Jul 21, 6:10 PM CDTSevere Thunderstorm WarningSGFCamden, Maries, Miller, Phelps, Pulaski54 min
Jul 21, 6:36 PM CDTFlash Flood WarningSGFCamden, Maries, Miller, Pulaski3 hr

Nearby

Severe Thunderstorm Warnings in Missouri, 2010Every 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.