Alert archive / Missouri / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 521, NWS Springfield, MO

August 21, 2003Ozark County, Missouri

NWS Springfield, MO issued this severe thunderstorm warning at Aug 21, 2003, 3:14 PM CDT for Ozark County, Missouri. It was in force for 46 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
Aug 21, 2003, 3:14 PM CDT (20:14 UTC)
Expired
Aug 21, 2003, 4:00 PM CDT
In force
46 min
Issued by
NWS Springfield, MO
Area
Counties, with a storm outline in the text

County Ozark County, MO

The radar

The Springfield radar (KSGF), 114 km from the middle of the area, began a volume at 20:18 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, 8.2 hours before the alert went out and 134 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 12:00Z on 2003-08-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1352 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 12:00Z on 2003-08-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 square meters per square second.1939Sfc1 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
1352 J/kg
Mixed-layer CIN
-141 J/kg
Mixed-layer LCL
1499 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
63 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KSGF 212014
SVRSGF
MOC153-212100-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD MO
313 PM CDT THU AUG 21 2003

THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL AND EASTERN OZARK COUNTY IN SOUTHWEST MISSOURI

* UNTIL 400 PM CDT.

* AT 308 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND   
  DAMAGING WINDS OF 60 TO 70 MPH.  THIS STORM WAS LOCATED NEAR   
  GAINESVILLE...OR 27 MILES SOUTHEAST OF AVA. THE THUNDERSTORMS 
  WERE NEARLY STATIONARY. ADDITIONAL THUNDERSTORMS OVER THE EASTERN
  PART OF OZARK COUNTY COULD ALSO BECOME SEVERE.

* THE TOWNS OF HARDENVILLE...TECUMSEH AND ZANONI ARE IN THE PATH 
  OF THIS NEARLY STATIONARY THUNDERSTORM.

LAT...LON 3680 9243 3651 9251 3649 9212 3681 9211

$$

BOOKBINDER

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 21, 3:18 PM CDTSevere Thunderstorm WarningSGFHowell42 min
Aug 21, 5:00 PM CDTSevere Thunderstorm WarningSGFOregon60 min
Aug 21, 5:16 PM CDTFlash Flood WarningSGFOregon4 hr
Aug 21, 6:06 PM CDTSevere Thunderstorm WarningSGFPhelps39 min
Aug 21, 6:21 PM CDTSevere Thunderstorm WarningSGFMaries54 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2003Every 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.