Alert archive / Iowa / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 10, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 7, 1993, 5:33 PM CDT for Lyon County, Iowa. It was in force for 32 min.
The area
The counties it named.
The facts
- Issued
- Jun 7, 1993, 5:33 PM CDT (22:33 UTC)
- Expired
- Jun 7, 1993, 6:05 PM CDT
- In force
- 32 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
County Lyon County, IA
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 10.6 hours before the alert went out and 230 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
- 2453 J/kg
- Mixed-layer CIN
- -268 J/kg
- Mixed-layer LCL
- 691 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 506 m²/s²
- 0-3 km storm-relative helicity
- 464 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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.
In the hours before
Special weather statement, Jun 7, 4:38 PM CDT, 55 minutes before
SDZALL-072240- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE HURON SD 438 PM CDT MON JUN 7 1993 ...TORNADO WATCH FOR SOUTHEAST...EAST CENTRAL...NORTH CENTRAL AND NORTHEAST SOUTH DAKOTA UNTIL 8PM CDT... AT 330 PM CDT...NUMEROUS VERY STRONG THUNDERSTORMS...WITH BRIEF HEAVY RAIN AND STRONG GUSTY WINDS CONTINUED OVER NORTHEAST THROUGH SOUTHEAST SOUTH DAKOTA. THE STRONGEST THUNDERSTORMS WERE OVER SOUTHEAST SOUTH DAKOTA...FROM SIOUX FALLS TO 25 MILES SOUTHWEST OF BROOKINGS. A LINE OF THUNDERSTORMS STRETCHED FROM 15 MILES SOUTH OF SIOUX FALLS TO ABERDEEN. THESE THUNDERSTORMS WERE MOVING TO THE NORTH AT 45 MILES AN HOUR. THESE ARE DANGEROUS THUNDERSTORMS. NUMEROUS REPORTS OF TORNADOES AND FUNNELS HAVE BEEN RECEIVED FROM THESE STORMS. IF YOU FIND YOURSELF IN THE PATH OF ONE OF THESE STORMS SEEK SHELTER IMMEDIATELY IN A REINFORCED SHELTER. STOREY
Special weather statement, Jun 7, 4:38 PM CDT, 55 minutes before
SDZALL-072240- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE HURON SD 438 PM CDT MON JUN 7 1993 ...TORNADO WATCH FOR SOUTHEAST...EAST CENTRAL...NORTH CENTRAL AND NORTHEAST SOUTH DAKOTA UNTIL 8PM CDT... AT 330 PM CDT...NUMEROUS VERY STRONG THUNDERSTORMS...WITH BRIEF HEAVY RAIN AND STRONG GUSTY WINDS CONTINUED OVER NORTHEAST THROUGH SOUTHEAST SOUTH DAKOTA. THE STRONGEST THUNDERSTORMS WERE OVER SOUTHEAST SOUTH DAKOTA...FROM SIOUX FALLS TO 25 MILES SOUTHWEST OF BROOKINGS. A LINE OF THUNDERSTORMS STRETCHED FROM 15 MILES SOUTH OF SIOUX FALLS TO ABERDEEN. THESE THUNDERSTORMS WERE MOVING TO THE NORTH AT 45 MILES AN HOUR. THESE ARE DANGEROUS THUNDERSTORMS. NUMEROUS REPORTS OF TORNADOES AND FUNNELS HAVE BEEN RECEIVED FROM THESE STORMS. IF YOU FIND YOURSELF IN THE PATH OF ONE OF THESE STORMS SEEK SHELTER IMMEDIATELY IN A REINFORCED SHELTER. STOREY
Special weather statement, Jun 7, 4:45 PM CDT, 48 minutes before
SDZ011-072220- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE HURON SD 445 PM CDT MON JUN 7 1993 ...TORNADO WATCH FOR SOUTHEAST...EAST CENTRAL...NORTH CENTRAL AND NORTHEAST SOUTH DAKOTA UNTIL 8PM CDT... AT 445 PM CDT...THE SEVERE THUNDERSTORMS OVER EASTERN BEADLE AND WESTERN KINGSBURY COUNTIES HAD DECREASED IN INTENSITY...AND NO FURTHER SEVERE WEATHER HAD BEEN REPORTED. THE TORNADO WARNINGS FOR EASTERN BEADLE AND WESTERN KINGSBURY COUNTIES WILL BE ALLOWED TO EXPIRE AT 445 PM CDT. STOREY
Special weather statement, Jun 7, 4:46 PM CDT, 47 minutes before
SDZ011-072220- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE HURON SD 445 PM CDT MON JUN 7 1993 ...TORNADO WATCH FOR SOUTHEAST...EAST CENTRAL...NORTH CENTRAL AND NORTHEAST SOUTH DAKOTA UNTIL 8PM CDT... AT 445 PM CDT...THE SEVERE THUNDERSTORMS OVER EASTERN BEADLE AND WESTERN KINGSBURY COUNTIES HAD DECREASED IN INTENSITY...AND NO FURTHER SEVERE WEATHER HAD BEEN REPORTED. THE TORNADO WARNINGS FOR EASTERN BEADLE AND WESTERN KINGSBURY COUNTIES WILL BE ALLOWED TO EXPIRE AT 445 PM CDT. STOREY
Special weather statement, Jun 7, 5:16 PM CDT, 17 minutes before
IAZ013-020-021-031-032-043-NEZ094>096-SDZ066-072330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 516 PM CDT MON JUN 7 1993 ...THUNDERSTORMS ARE STILL POSSIBLE THIS EVENING... SCATTERED THUNDERSTORMS ARE EXPECTED TO CONTINUE TO DEVELOP AND MOVE RAPIDLY NORTHEAST THROUGH THE AREA. SOME OF THESE STORMS COULD BECOME SEVERE. AS A RESULT...A TORNADO WATCH REMAINS IN EFFECT UNITL 8 PM. IN ADDITION WINDS SHOULD BECOME WEST AND REMAIN GUSTY AT 20 TO 30 MILES AN HOUR. STONGER WINDS CAN BE EXPECTED NEAR THUNDERSTORMS. HUMPHREY
Special weather statement, Jun 7, 5:17 PM CDT, 16 minutes before
IAZ013-020-021-031-032-043-NEZ094>096-SDZ066-072330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 516 PM CDT MON JUN 7 1993 ...THUNDERSTORMS ARE STILL POSSIBLE THIS EVENING... SCATTERED THUNDERSTORMS ARE EXPECTED TO CONTINUE TO DEVELOP AND MOVE RAPIDLY NORTHEAST THROUGH THE AREA. SOME OF THESE STORMS COULD BECOME SEVERE. AS A RESULT...A TORNADO WATCH REMAINS IN EFFECT UNITL 8 PM. IN ADDITION WINDS SHOULD BECOME WEST AND REMAIN GUSTY AT 20 TO 30 MILES AN HOUR. STONGER WINDS CAN BE EXPECTED NEAR THUNDERSTORMS. HUMPHREY
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 7, 1:06 AM CDT | Severe Thunderstorm Warning | FSD | Clay, Yankton | 54 min |
| Jun 7, 2:02 AM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Turner | 43 min |
| Jun 7, 4:43 PM CDT | Severe Thunderstorm Warning | FSD | Minnehaha, Moody | 47 min |
| Jun 7, 5:33 PM CDT | Severe Thunderstorm Warning | FSD | Rock | 42 min |
| Jun 7, 5:54 PM CDT | Severe Thunderstorm Warning | FSD | Pipestone | 41 min |
| Jun 7, 5:59 PM CDT | Tornado Warning | FSD | Rock | 36 min |
| Jun 7, 6:40 PM CDT | Tornado Warning | FSD | Nobles | 35 min |
| Jun 7, 3:52 AM CDT | Severe Thunderstorm Warning | FSD | Osceola | 38 min |
| Jun 7, 4:21 AM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 19 min |
| Jun 7, 4:35 AM CDT | Severe Thunderstorm Warning | FSD | Cherokee | 40 min |
| Jun 7, 4:50 AM CDT | Severe Thunderstorm Warning | FSD | O'Brien | 25 min |
| Jun 7, 6:34 PM CDT | Tornado Warning | FSD | O'Brien | 26 min |
| Jun 7, 6:39 PM CDT | Tornado Warning | FSD | O'Brien | 21 min |
| Jun 7, 6:44 PM CDT | Tornado Warning | FSD | Lyon, Sioux | 21 min |
| Jun 7, 6:50 PM CDT | Tornado Warning | FSD | Osceola | 25 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 1993Every severe thunderstorm warning in 1993
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.