Alert archive / Missouri / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 232, NWS Springfield, MO

May 9, 2003Cedar County, Dade County, Missouri

NWS Springfield, MO issued this severe thunderstorm warning at May 9, 2003, 11:04 PM CDT for Cedar County, Dade County, Missouri. It was in force for 41 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: May 9, 2003, 11:04 PM CDT (04:04 UTC)
Expired: May 9, 2003, 11:45 PM CDT
In force: 41 min
Issued by: NWS Springfield, MO
Area: Counties, with a storm outline in the text

Counties Cedar County, MO, Dade County, MO

The radar

The Springfield radar (KSGF), 61 km from the middle of the area, began a volume at 04:04 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

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

Issued	Product	Office	Lasted
May 9, 11:00 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 4.1 hours before the alert went out and 79 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: 2291 J/kg
Mixed-layer CIN: -67 J/kg
Mixed-layer LCL: 686 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 133 m²/s²
0-3 km storm-relative helicity: 160 m²/s²
Significant tornado parameter: 1.3
Supercell composite: 7.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

724 
WUUS53 KSGF 100404
SVRSGF
MOC039-057-100445-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD MO
1104 PM CDT FRI MAY 9 2003

THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN DADE COUNTY IN MISSOURI
  CEDAR COUNTY IN MISSOURI

* UNTIL 1145 PM CDT.

* AT 1059 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SEVERE THUNDERSTORMS CAPABLE OF PRODUCING NICKEL SIZE HAIL.  THESE
  STORMS WERE LOCATED ALONG A LINE EXTENDING FROM LAMAR TO 6 MILES
  NORTHEAST OF GREENFIELD...AND MOVING NORTHEAST AT 50 MPH.

* THE SEVERE THUNDERSTORMS WILL BE NEAR...
   STOCKTON BY 1120 PM CDT.

THE TOWNS OF NEOLA...DADEVILLE...SYLVANIA...ARCOLA AND CEDARVILLE ARE
ALSO IN THE PATH OF THESE STORMS.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS.

LAT...LON 3746 9407 3748 9366 3779 9366 3784 9405

$$

IZZI

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 May 9, 8:18 PM CDT, 2 hours 46 minutes earlier.

Area forecast discussion, May 9, 8:18 PM CDT, 2 hours 46 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SPRINGFIELD MO
818 PM CDT FRI MAY 9 2003

...MESOSCALE CONVECTIVE DISCUSSION...

CAP CONTINUES TO HOLD STRONG IN THE WARM SECTOR OVER OUR CWA.
MOISTURE CONVERGENCE HAS BEEN STRONG ENOUGH FOR CONVECTION TO BREAK
THROUGH THE CAP ALONG THE BOUNDARY THE STRETCHES ROUGHLY FROM NE
INTO WC MO AND THE SSW FROM THERE INTO CENTRAL OKLAHOMA. SIX MINUTE
PROFILER DATA FROM NDSK1 SHOWS THE LOW LEVEL JET BEGINNING TO
INTENSIFY WHICH SHOULD ENHANCE CONVERGENCE OVER THE ALONG THE
BOUNDARY.

CONVECTION OVER NORTH CENTRAL OK SEEMS TO BE TRYING TO ORGANIZE
SOME. IF CONVECTION CAN CONTINUE TO ORGANIZE AND DEVELOP A COLD POOL
THAT MAY BE ENOUGH TO OVERCOME THE STRONG CAPPING INVERSION OVER OUR
AREA BUT LIKELY WOULDNT ARRIVE UNTIL AFTER 4Z.

THREAT OF ANY SEVERE CONVECTION OVER THE MAJORITY OF OUR AREA SEEMS
TO BE QUITE LOW THROUGH 10 PM. ADDITIONAL CONVECTION SEEMS TO BE
DEVELOPING ALONG A NORTHWARD MOVING BOUNDARY IN NE OK...SHOULD THAT
MAINTAIN ITSELF THEN THE OUR WESTERN COUNTIES MAY SEE SOME
CONVECTION WORK ITS WAY INTO THE AREA BEFORE 10 PM.

.SGF...
MO...FLOOD WATCH TONIGHT AND SATURDAY CENTRAL MO ZONES
055>058-067>069.
KS...NONE.

IZZI

Hazardous weather outlook, May 9, 8:56 PM CDT, 2 hours 8 minutes before

KSZ073-097-101-MOZ055>058-066>071-077>083-088>098-101>106-101200-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SPRINGFIELD MO
856 PM CDT FRI MAY 9 2003

...SEVERE THUNDERSTORMS LIKELY TONIGHT...

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

.DAY ONE...TONIGHT.

  WEATHER HAZARDS EXPECTED:

  LOCALLY HEAVY RAINFALL AND FLASH FLOODING.
  SCATTERED SEVERE THUNDERSTORMS...SOME MAY CONTAIN:
    HAIL TO THE SIZE OF GOLF BALLS
    WIND GUSTS IN EXCESS OF 60 MPH

  AREAS AFFECTED AND TIMING:

  THUNDERSTORMS ARE POSSIBLE WEST OF AN OSCELOLA TO JOPLIN LINE
  AFTER 10 PM...AND OVERSPREADING THE REMAINDER OF THE OUTLOOK AREA
  AFTER MIDNIGHT.

  DISCUSSION:

  THE AIRMASS OVER THE OUTLOOK AREA REMAINS VERY UNSTABLE...HOWEVER
  WARM TEMPERATURES ALOFT HAVE PREVENTED THUNDERSTORM DEVELOPMENT SO
  FAR THIS EVENING. THE TEMPERATURES ALOFT ARE FORECAST TO COOL SOME
  OVERNIGHT AND SHOULD ALLOW FOR SHOWERS AND THUNDERSTORMS TO
  OVERSPREAD THE OUTLOOK AREA. THE PRIMARY THREAT FROM THESE STORMS
  WILL BE FROM LARGE HAIL AND POSSIBLY SOME DAMAGING WINDS.

  THUNDERSTORMS WILL LIKELY CONTINUE INTO THE OVERNIGHT HOURS WITH
  LARGE HAIL AND LOCALLY HEAVY RAINFALL BECOMING THE PRIMARY THREATS
  AFTER MIDNIGHT. THE GROUND IS ALREADY SATURATED OVER CENTRAL
  MISSOURI SO FLASH FLOODING IS POSSIBLE IF THUNDERSTORMS BEGIN TO
  TRAIN AND PRODUCE HEAVY RAINFALL.

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

  THUNDERSTORMS ARE EXPECTED TO BE ONGOING EARLY SATURDAY
  MORNING...BUT A BRIEF BREAK IS EXPECTED BY LATE MORNING AND EARLY
  AFTERNOON. THEREAFTER...THE COLD FRONT WILL FINALLY PUSH THROUGH
  THE REGION LATE SATURDAY AFTERNOON AND EVENING...BRINGING
  POTENTIALLY ANOTHER ROUND OF SEVERE WEATHER. THE BEST CHANCES FOR
  SEVERE THUNDERSTORMS WILL BE IN SOUTH CENTRAL MISSOURI...SOUTHEAST
  OF A BRANSON TO ROLLA LINE.

.SPOTTER INFORMATION STATEMENT...

  SPOTTERS ACTIVIATION WILL LIKELY BE NEEDED OVERNIGHT.

&&

THIS PRODUCT IS NOW AVAILABLE IN GRAPHICAL FORMAT...ALONG WITH OTHER
WEATHER...HYDROLOGICAL AND CLIMATE INFORMATION...AT
HTTP://WWW.CRH.NOAA.GOV/SGF

IZZI

In the hours before

Special weather statement, May 9, 8:30 PM CDT, 2 hours 34 minutes before

KSZ073-097-101-MOZ055>058-066>071-077>082-088>096-101>104-100400-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
830 PM CDT FRI MAY 9 2003

TORNADO WATCH NUMBER 321 HAS BEEN CANCELLED FOR THE FOLLOWING
COUNTIES...

IN MISSOURI:

BARRY...CHRISTIAN...DOUGLAS...PHELPS...STONE...TANEY...TEXAS AND
WRIGHT.

SOME CITIES NO LONGER INCLUDED IN THIS TORNADO WATCH ARE AVA...
BRANSON...HOUSTON...MONETT...OZARK AND ROLLA.

TORNADO WATCH NUMBER 321 REMAINS IN EFFECT UNTIL 1100 PM CDT FRIDAY
EVENING...FOR THE FOLLOWING COUNTIES...

IN MISSOURI:

BARTON...BENTON...CAMDEN...CEDAR...DADE...DALLAS...GREENE...
HICKORY...JASPER...LACLEDE...LAWRENCE...MARIES...MCDONALD...MILLER...
MORGAN...NEWTON...POLK...PULASKI...ST. CLAIR...VERNON AND WEBSTER.

IN KANSAS:

BOURBON...CHEROKEE AND CRAWFORD.

SOME CITIES IN THIS TORNADO WATCH INCLUDE BOLIVAR...CAMDENTON...FORT
LEONARD WOOD...FORT SCOTT...JOPLIN...LEBANON...MOUNT VERNON...
NEOSHO...NEVADA...OSAGE BEACH...PITTSBURG...SPRINGFIELD AND STOCKTON.

A TORNADO WATCH MEANS THAT CONDITIONS ARE FAVORABLE FOR THE
DEVELOPMENT OF SEVERE WEATHER...INCLUDING TORNADOES...LARGE HAIL...
AND DAMAGING WINDS...IN AND CLOSE TO THE WATCH AREA. WHILE SEVERE
WEATHER MAY NOT BE IMMINENT...PERSONS SHOULD REMAIN ALERT FOR RAPIDLY
CHANGING WEATHER CONDITIONS...AND LISTEN FOR LATER STATEMENTS AND
POSSIBLE WARNINGS.

GAEDE

Special weather statement, May 9, 10:56 PM CDT, 8 minutes before

KSZ073-097-101-MOZ055>058-066>070-077>081-088>091-093-094-101-092130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
1056 PM CDT FRI MAY 9 2003

TORNADO WATCH NUMBER 321 WILL BE ALLOWED TO EXPIRE AT 11 PM.  THIS
WATCH WILL BE REPLACED BY SEVERE THUNDERSTORM WATCH NUMBER 329
EFFECTIVE UNTIL 5 AM CDT.

GAEDE

Local storm report, May 9, 10:58 PM CDT, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
1058 PM CDT FRI MAY 09 2003

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1040 PM    JASPER                    MO   .75 INCH HAIL
05/09/03   JASPER                         REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

1050 PM    NASHVILLE                 MO   .75 INCH HAIL
05/09/03   BARTON                         REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 10:31 PM CDT	Severe Thunderstorm Warning	SGF	Barton, Jasper	44 min
May 10, 2:02 AM CDT	Severe Thunderstorm Warning	SGF	Benton	28 min
May 10, 3:48 AM CDT	Severe Thunderstorm Warning	SGF	Benton	42 min
May 10, 10:43 AM CDT	Tornado Warning	SGF	Maries, Phelps	17 min
May 10, 3:26 PM CDT	Severe Thunderstorm Warning	SGF	St. Clair, Vernon	64 min
May 10, 3:50 PM CDT	Severe Thunderstorm Warning	SGF	Jasper, Newton	55 min
May 10, 4:19 PM CDT	Severe Thunderstorm Warning	SGF	Christian, Greene	56 min
May 10, 4:37 PM CDT	Tornado Warning	SGF	Jasper, Lawrence	53 min
May 10, 4:41 PM CDT	Severe Thunderstorm Warning	SGF	Newton	34 min
May 10, 4:49 PM CDT	Severe Thunderstorm Warning	SGF	Greene, Webster	26 min
May 10, 5:00 PM CDT	Tornado Warning	SGF	Webster	45 min
May 10, 5:04 PM CDT	Severe Thunderstorm Warning	SGF	Howell, Oregon, Shannon	41 min
May 10, 5:09 PM CDT	Severe Thunderstorm Warning	SGF	Christian, Greene	36 min
May 10, 5:10 PM CDT	Severe Thunderstorm Warning	SGF	Laclede, Wright	35 min
May 10, 5:37 PM CDT	Severe Thunderstorm Warning	SGF	Dallas, Polk, Webster	23 min
May 10, 5:37 PM CDT	Severe Thunderstorm Warning	SGF	Texas	38 min
May 10, 5:40 PM CDT	Severe Thunderstorm Warning	SGF	Phelps	50 min
May 10, 5:41 PM CDT	Severe Thunderstorm Warning	SGF	Oregon, St. Clair	49 min
May 10, 5:44 PM CDT	Severe Thunderstorm Warning	SGF	Vernon	46 min
May 10, 6:24 PM CDT	Severe Thunderstorm Warning	SGF	Oregon	51 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2003 Every severe thunderstorm warning in 2003

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.