Alert archive / Missouri / Severe Thunderstorm Watches in 2005
Severe Thunderstorm Watch 721
The Storm Prediction Center issued this severe thunderstorm watch at Aug 14, 2005, 2:05 PM CDT for Alexander County, Jackson County, Union County, Illinois; 15 counties in Missouri. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 14, 2005, 2:05 PM CDT (19:05 UTC)
- Expired
- Aug 14, 2005, 7:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
Counties Alexander County, IL, Jackson County, IL, Union County, IL, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Iron County, MO, Madison County, MO, Mississippi County, MO, Perry County, MO, Ripley County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Scott County, MO, Stoddard County, MO, Washington County, MO, Wayne County, MO
The radar
The Paducah radar (KPAH), 139 km from the middle of the area, began a volume at 19:07 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
10 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 14, 3:16 PM CDT | Severe Thunderstorm Warning | LSX | Iron, Reynolds | 44 min |
| Aug 14, 3:16 PM CDT | Severe Thunderstorm Warning | LSX | Iron, Reynolds | 46 min |
| Aug 14, 3:36 PM CDT | Severe Thunderstorm Warning | PAH | Bollinger | 39 min |
| Aug 14, 3:58 PM CDT | Severe Thunderstorm Warning | LSX | Madison | 36 min |
| Aug 14, 4:30 PM CDT | Severe Thunderstorm Warning | PAH | Bollinger | 45 min |
| Aug 14, 4:53 PM CDT | Severe Thunderstorm Warning | PAH | Alexander | 52 min |
| Aug 14, 4:56 PM CDT | Severe Thunderstorm Warning | PAH | Cape Girardeau, Perry | 34 min |
| Aug 14, 4:56 PM CDT | Severe Thunderstorm Warning | PAH | Cape Girardeau, Perry | 34 min |
| Aug 14, 5:13 PM CDT | Severe Thunderstorm Warning | PAH | Union | 47 min |
| Aug 14, 5:16 PM CDT | Severe Thunderstorm Warning | PAH | Jackson | 38 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Little Rock, AR (KLZK), launched 12:00Z, 7.1 hours before the alert went out and 293 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.
- Mixed-layer CAPE
- 960 J/kg
- Mixed-layer CIN
- -89 J/kg
- Mixed-layer LCL
- 1399 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -22 m²/s²
- 0-3 km storm-relative helicity
- -8 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 141903
SEL1
SPC WW 141903
ILZ000-MOZ000-150000-
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 721
NWS STORM PREDICTION CENTER NORMAN OK
205 PM CDT SUN AUG 14 2005
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
SOUTHWEST ILLINOIS
SOUTHEAST MISSOURI
EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 205 PM UNTIL 700
PM CDT.
HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 50
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES NORTHWEST OF
POPLAR BLUFF MISSOURI TO 20 MILES EAST NORTHEAST OF CAPE GIRARDEAU
MISSOURI. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).
REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES.
OTHER WATCH INFORMATION...CONTINUE...WW 720...
DISCUSSION...SCATTERED THUNDERSTORMS ARE INCREASING OVER SOUTH
CENTRAL MO. THESE STORMS ARE EXPECTED TO DEVELOP EASTWARD TOWARD
SOUTHWEST IL DURING THE AFTERNOON. VERY UNSTABLE AIR MASS...COUPLED
WITH WEAK SURFACE BOUNDARY AND SUFFICIENT DEEP LAYER
SHEAR...INDICATE A RISK OF DAMAGING WINDS IN STRONGER CELLS.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.
A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION
VECTOR 26030.
...HART
380,0910 380,0891 363,0891 363,0910SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 14, 11:28 AM CDT | Mesoscale Discussion | SPC | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 16 more | 2 hr |
| Aug 14, 4:57 PM CDT | Mesoscale Discussion | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 10 more | 93 min |
| Aug 14, 5:25 PM CDT | Severe Thunderstorm Watch | SPC | Edwards, Franklin, Gallatin, Hamilton, Hardin, Jefferson and 7 more | 5 hr |
Nearby
Severe Thunderstorm Watches in Missouri, 2005Severe Thunderstorm Watches in Illinois, 2005Every severe thunderstorm watch in 2005
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.