Alert archive / Missouri / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 195, NWS Springfield, MO

August 24, 2007Benton County, Missouri

NWS Springfield, MO issued this severe thunderstorm warning at Aug 24, 2007, 9:12 PM CDT for Benton County, Missouri. It was in force for 78 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: Aug 24, 2007, 9:12 PM CDT (02:12 UTC)
Expired: Aug 24, 2007, 10:30 PM CDT
In force: 78 min
Issued by: NWS Springfield, MO
Area: Counties, with a storm outline in the text

County Benton County, MO

The radar

The Pleasant Hill radar (KEAX), 102 km from the middle of the area, began a volume at 02:14 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 00:00Z, 2.2 hours before the alert went out and 162 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: 491 J/kg
Mixed-layer CIN: -79 J/kg
Mixed-layer LCL: 975 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 33 m²/s²
0-3 km storm-relative helicity: 98 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.4

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 Aug 24, 7:04 PM CDT, 2 hours 8 minutes earlier.

Area forecast discussion, Aug 24, 7:04 PM CDT, 2 hours 8 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SPRINGFIELD MO
704 PM CDT FRI AUG 24 2007

...FLOOD POTENTIAL UPDATE...

.UPDATE...

INITIAL ROUND OF STRONG TO SEVERE CONVECTION HAD TAPERED OFF AS OF
EARLY EVENING. HOWEVER WIDESPREAD SHOWERS AND EMBEDDED THUNDER
CONTINUED. AFTERNOON STORMS HAVE WORKED OVER THE AIRMASS AND
INSTABILITY HAD DIMINISHED. HOWEVER WATER VAPOR IMAGERY AND
PROFILERS DEPICT A MID LEVEL SHORTWAVE COMING ACROSS KANSAS WHERE
ADDITIONAL CONVECTIVE DEVELOPMENT WAS TAKING PLACE. EXPECT
THUNDERSTORMS TO CONTINUE TO INCREASE IN COVERAGE INTO THE OVERNIGHT
HOURS AS THE LOW LEVEL JET BEGINS TO STRENGTHEN. THE LOW LEVEL JET
WILL INTERSECT THE OUTFLOW BOUNDARY NOW STRETCHING FROM NORTHEAST
OKLAHOMA TO SOUTHEAST MISSOURI. MEANWHILE THE REGION WILL COME UNDER
THE INFLUENCE OF UPPER LEVEL DIVERGENCE WITHIN THE ENTRANCE REGION
OF AN UPPER LEVEL JET STREAK. THESE FEATURES ALONG WITH PRECIPITABLE
WATER VALUES NEAR 2 INCHES WILL SUPPORT HEAVY RAINFALL ACROSS
PORTIONS OF THE MISSOURI OZARKS AND SOUTHEAST KANSAS OVERNIGHT. THE
FLASH FLOOD WATCH WILL CONTINUE THROUGH SATURDAY MORNING FOR MUCH OF
THE MISSOURI OZARKS AND EXTREME SOUTHEAST KANSAS.

FOSTER

&&

.DISCUSSION...

MAIN FOCUS THIS PERIOD WILL BE WITH THE SEVERE THUNDERSTORM AND
FLASH FLOOD POTENTIAL.

MAIN FRONTAL BOUNDARY STILL TO THE NORTH AND WEST OF THE AREA FROM
NORTHERN MISSOURI INTO CENTRAL KANSAS. HOWEVER...UNLIKE IN DAYS
PAST...WE HAVE MORE DYNAMIC FEATURES AFFECTING THE CWA. REMNANT
OUTFLOW BOUNDARIES FROM PREVIOUS CONVECTION WAS STRETCHED OUT
ACROSS THE CWA AND AS TEMPERATURES HAVE WARMED THIS AFTERNOON
THUNDERSTORMS HAVE QUICKLY DEVELOPED. THESE STORMS WERE TRAINING
FROM SOUTHWEST TO NORTHEAST WITH PW VALUES FROM THE 18Z SOUNDING
AT 1.79 IN. PW VALUES EXPECTED TO CONTINUE INCREASING TO NEAR 2
INCHES OVERNIGHT. ANOTHER SHORTWAVE IS EXPECTED TO PUSH EAST AND
AFFECT THE AREA OVERNIGHT WHICH MAIN FRONT WILL SLOWLY SAG
SOUTHWARD TOWARDS THE AREA. ANOTHER MCS IS EXPECTED TO DEVELOP
OVERNIGHT WITH HEAVY RAIN AND FLASH FLOODING THE MAIN HAZARDS.
WITH RECENT HEAVY RAINS AND FLASH FLOODING LAST
WEEKEND...ADDITIONAL HEAVY RAIN TONIGHT WILL LIKELY LEAD TO MORE
FLASH FLOODING. HAVE DECIDED TO GO WITH A FLASH FLOOD WATCH FOR
NORTHWESTERN 2/3 OF THE CWA THROUGH SATURDAY MORNING. HIGHEST QPF
TOTALS EXPECTED FROM CENTRAL MISSOURI INTO THE FAR WESTERN CWA
TOWARDS THE MISSOURI KANSAS STATE LINE.

FRONTAL BOUNDARY WILL GRADUALLY SLIP SOUTHWARD THROUGH THE AREA ON
SATURDAY WITH REMNANT CONVECTION CONTINUING ACROSS SOUTHERN
MISSOURI. HAVE PRECIPITATION ENDING BY SATURDAY EVENING...BUT
CLOUD COVER AND PRECIPITATION CHANCES WILL LIKELY KEEP
TEMPERATURES IN THE 80S FOR HIGHS.

FLOW FROM THE GULF WILL AGAIN RETURN BY MONDAY NIGHT INTO TUESDAY
IN ADVANCE OF THE NEXT FRONTAL BOUNDARY. THIS FRONT SHOULD MAKE IT
INTO THE AREA BY TUESDAY NIGHT INTO WEDNESDAY OFFERING THE NEXT
CHANCE OF RAIN. SLIGHTLY COOLER TEMPERATURES CAN BE EXPECTED
BEHIND THE NEXT FRONT FOR THE LATER PART OF NEXT WORK WEEK.

LINDENBERG

&&

.AVIATION...

SHOWERS AND THUNDERSTORMS WILL CONTINUE AND EVEN INCREASE AGAIN
TONIGHT AHEAD OF AN APPROACHING UPPER LEVEL DISTURBANCE AND COLD
FRONT. MVFR CONDITIONS WILL OCCUR IN THE STORMS. MVFR CEILINGS WILL
ALSO BECOME MORE PREVALENT OVERNIGHT AS THE LOWER LEVELS SATURATE.
IFR CONDITIONS WILL BE POSSIBLE IN THE HEAVIER SHOWERS. A GRADUAL
IMPROVEMENT CAN BE EXPECTED DURING THE DAY SATURDAY.

FOSTER

&&

.SGF WATCHES/WARNINGS/ADVISORIES...
MO...FLASH FLOOD WATCH THROUGH SATURDAY MORNING FOR SOUTHWEST
MISSOURI WEST OF A LINE FROM ROLLA TO BRANSON.

KS...FLASH FLOOD WATCH THROUGH SATURDAY MORNING FOR EXTREME
SOUTHEAST KANSAS.

&&

Hazardous weather outlook, Aug 24, 7:00 PM CDT, 2 hours 12 minutes before

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In the hours before

Local storm report, Aug 24, 3:14 PM CDT, 5 hours 58 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
314 PM CDT FRI AUG 24 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0234 PM     HAIL             DOOLITTLE               37.94N 91.88W
08/24/2007  E1.00 INCH       PHELPS             MO   LAW ENFORCEMENT

&&

HATCH

Local storm report, Aug 24, 3:25 PM CDT, 5 hours 47 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
325 PM CDT FRI AUG 24 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0320 PM     FLASH FLOOD      1 SW PHILLIPSBURG       37.54N 92.80W
08/24/2007                   LACLEDE            MO   AMATEUR RADIO

            WATER OVER ROAD AND CAR WASHED OFF ROAD ON I-44 AT MILE
            MARKER 120. BOTH EAST BOUND LANES HAVE WATER FLOWING OVER
            THEM.

&&

HATCH

Local storm report, Aug 24, 3:35 PM CDT, 5 hours 37 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
335 PM CDT FRI AUG 24 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0330 PM     FLASH FLOOD      CRANE                   36.91N 93.57W
08/24/2007                   STONE              MO   PUBLIC

            SIGNIFICANT STREET FLOODING CITY WIDE.

&&

HATCH

Local storm report, Aug 24, 4:14 PM CDT, 4 hours 58 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
414 PM CDT FRI AUG 24 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0158 PM     TSTM WND DMG     ST. JAMES               38.00N 91.61W
08/24/2007                   PHELPS             MO   EMERGENCY MNGR

            A LARGE SHED DESTROYED AND SEVERAL CARS DAMAGED.

&&

HATCH

Local storm report, Aug 24, 4:38 PM CDT, 4 hours 34 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE SPRINGFIELD MO
438 PM CDT FRI AUG 24 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0258 PM     TSTM WND DMG     ST. JAMES               38.00N 91.61W
08/24/2007                   PHELPS             MO   EMERGENCY MNGR

            A LARGE SHED DESTROYED AND SEVERAL CARS DAMAGED.

&&

HATCH

Local storm report, Aug 24, 8:09 PM CDT, 1 hour 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
809 PM CDT FRI AUG 24 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0250 PM     TORNADO          4 E ROLLA               37.95N 91.70W
08/24/2007                   PHELPS             MO   NWS STORM SURVEY

            A NATIONAL WEATHER SERVICE STORM SURVEY REVEALED THAT A
            WEAK EF-0 TORNADO TOUCHED DOWN NEAR THE COMMUNITY OF
            DILLON...OR FOUR MILES EAST OF ROLLA. THE TORNADO WAS 75
            YARDS WIDE AND WAS ON THE GROUND FOR ABOUT ONE MILE.
            TREES AND STRUCTURAL DAMAGE OCCURRED NEAR A BUSINESS
            CALLED BCI.

&&

DCRAMER

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 24, 9:40 PM CDT	Severe Thunderstorm Warning	SGF	Morgan	53 min
Aug 25, 3:42 AM CDT	Flash Flood Warning	SGF	McDonald	6 hr

Nearby

Severe Thunderstorm Warnings in Missouri, 2007 Every severe thunderstorm warning in 2007

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.