Alert archive / Missouri / Severe Thunderstorm Watches in 2001

Severe Thunderstorm Watch 755

September 23, 200119 counties in Arkansas; 20 counties in Missouri

The Storm Prediction Center issued this severe thunderstorm watch at Sep 23, 2001, 1:45 PM CDT for 19 counties in Arkansas; 20 counties in Missouri. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
Sep 23, 2001, 1:45 PM CDT (18:45 UTC)
Expired
Sep 23, 2001, 6:00 PM CDT
In force
4 hr
Issued by
the Storm Prediction Center
All 39 counties

Baxter County, AR, Boone County, AR, Clay County, AR, Cleburne County, AR, Craighead County, AR, Fulton County, AR, Greene County, AR, Independence County, AR, Izard County, AR, Johnson County, AR, Lawrence County, AR, Marion County, AR, Newton County, AR, Pope County, AR, Randolph County, AR, Searcy County, AR, Sharp County, AR, Stone County, AR, Van Buren County, AR, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Christian County, MO, Douglas County, MO, Dunklin County, MO, Howell County, MO, Madison County, MO, New Madrid County, MO, Oregon County, MO, Ozark County, MO, Pemiscot County, MO, Reynolds County, MO, Ripley County, MO, Shannon County, MO, Stoddard County, MO, Stone County, MO, Taney County, MO, Wayne County, MO

The radar

The Springfield radar (KSGF), 152 km from the middle of the area, began a volume at 18:48 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.

Warnings issued inside it

11 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Sep 23, 1:55 PM CDTSevere Thunderstorm WarningSGFChristian, Taney50 min
Sep 23, 2:13 PM CDTSevere Thunderstorm WarningSGFDouglas47 min
Sep 23, 2:35 PM CDTSevere Thunderstorm WarningSGFOregon25 min
Sep 23, 2:50 PM CDTSevere Thunderstorm WarningPAHNew Madrid, Stoddard25 min
Sep 23, 2:50 PM CDTSevere Thunderstorm WarningSGFOzark25 min
Sep 23, 2:57 PM CDTSevere Thunderstorm WarningSGFHowell48 min
Sep 23, 3:24 PM CDTSevere Thunderstorm WarningMEGRandolph51 min
Sep 23, 3:30 PM CDTSevere Thunderstorm WarningLZKBaxter45 min
Sep 23, 4:18 PM CDTSevere Thunderstorm WarningLZKFulton, Izard42 min
Sep 23, 4:58 PM CDTFlash Flood WarningMEGRandolph3 hr
Sep 23, 5:50 PM CDTSevere Thunderstorm WarningMEGDunklin, Pemiscot40 min

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 6.8 hours before the alert went out and 172 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 2001-09-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 786 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 2001-09-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -18 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
786 J/kg
Mixed-layer CIN
-58 J/kg
Mixed-layer LCL
1114 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
-18 m²/s²
0-3 km storm-relative helicity
-18 m²/s²
Significant tornado parameter
0.0
Supercell composite
-1.1

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 22, 11:45 PM CDTSevere Thunderstorm WatchSPCBates, Cass, Clay, Jackson, Platte3 hr
Sep 23, 3:15 PM CDTSevere Thunderstorm WatchSPCMississippi, Scott5 hr

Nearby

Severe Thunderstorm Watches in Missouri, 2001Severe Thunderstorm Watches in Arkansas, 2001Every severe thunderstorm watch in 2001

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.