Alert archive / Iowa / Tornado Warnings in 2008
Tornado Warning 41, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this tornado warning at Jun 11, 2008, 7:15 PM CDT for Buena Vista County, Iowa. It was in force for 30 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 11, 2008, 7:15 PM CDT (00:15 UTC)
- Expired
- Jun 11, 2008, 7:45 PM CDT
- In force
- 30 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
County Buena Vista County, IA
The radar
The Sioux Falls radar (KFSD), 161 km from the middle of the area, began a volume at 00:15 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 11, 7:30 PM CDT | TSTM WND GST 0 | 3 E Rembrandt, IA | 55 TO 60 MPH WITH BRANCHES DOWN |
| Jun 11, 7:30 PM CDT | TSTM WND GST 60 | 3 E Rembrandt, IA | 55 TO 50 MPH WINDS WITH BRANCHES DOWN |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 11, 2:52 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 0.3 hours before the alert went out and 193 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
- 1641 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 1105 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 232 m²/s²
- 0-3 km storm-relative helicity
- 249 m²/s²
- Significant tornado parameter
- 1.9
- Supercell composite
- 8.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS53 KFSD 120015 TORFSD IAC021-120045- /O.NEW.KFSD.TO.W.0041.080612T0015Z-080612T0045Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 715 PM CDT WED JUN 11 2008 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A * TORNADO WARNING FOR... BUENA VISTA COUNTY IN NORTHWEST IOWA * UNTIL 745 PM CDT * AT 715 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING A TORNADO ALONG A LINE EXTENDING FROM SIOUX RAPIDS TO 4 MILES SOUTHWEST OF LAKESIDE...OR ALONG A LINE EXTENDING FROM 17 MILES SOUTH OF SPENCER TO STORM LAKE...MOVING EAST AT 35 MPH. * TORNADO PRODUCING STORMS WILL BE NEAR... NEWELL...MARATHON AROUND 730 PM CDT... ALBERT CITY AROUND 735 PM CDT... THIS IS AN EXTREMELY DANGEROUS AND LIFE THREATENING SITUATION. TAKE COVER NOW. A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT WEDNESDAY EVENING FOR NORTHWEST IOWA AND SOUTHWEST MINNESOTA AND NORTHEAST NEBRASKA AND SOUTHEAST SOUTH DAKOTA. LAT...LON 4291 9493 4256 9493 4257 9538 4291 9529 TIME...MOT...LOC 0015Z 270DEG 31KT 4290 9514 4259 9519 $$ RSR
2 follow-up statements
000 WWUS53 KFSD 120030 SVSFSD SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 729 PM CDT WED JUN 11 2008 IAC021-120045- /O.CON.KFSD.TO.W.0041.000000T0000Z-080612T0045Z/ BUENA VISTA IA- 729 PM CDT WED JUN 11 2008 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR BUENA VISTA COUNTY... AT 729 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A LINE OF TORNADO PRODUCING STORMS. THESE TORNADO PRODUCING STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 3 MILES NORTHWEST OF MARATHON TO 3 MILES SOUTHWEST OF LAKESIDE...OR ALONG A LINE EXTENDING FROM 18 MILES SOUTH OF SPENCER TO NEAR STORM LAKE...MOVING EAST AT 35 MPH. TORNADO PRODUCING STORMS WILL BE NEAR... ALBERT CITY AROUND 740 PM CDT... NEWELL AROUND 745 PM CDT... THIS IS AN EXTREMELY DANGEROUS AND LIFE THREATENING SITUATION. TAKE COVER NOW. A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT WEDNESDAY EVENING FOR NORTHWEST IOWA AND SOUTHWEST MINNESOTA AND NORTHEAST NEBRASKA AND SOUTHEAST SOUTH DAKOTA. LAT...LON 4291 9493 4256 9493 4257 9538 4291 9529 TIME...MOT...LOC 0029Z 270DEG 31KT 4290 9498 4260 9518 $$ RSR
000 WWUS53 KFSD 120046 SVSFSD SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 746 PM CDT WED JUN 11 2008 IAC021-120056- /O.EXP.KFSD.TO.W.0041.000000T0000Z-080612T0045Z/ BUENA VISTA IA- 746 PM CDT WED JUN 11 2008 ...THE TORNADO WARNING FOR BUENA VISTA COUNTY HAS EXPIRED... THE STORM HAS EXITED THE WARNED AREA. A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT WEDNESDAY EVENING FOR NORTHWEST IOWA AND SOUTHWEST MINNESOTA AND NORTHEAST NEBRASKA AND SOUTHEAST SOUTH DAKOTA. LAT...LON 4291 9493 4256 9493 4257 9538 4291 9529 TIME...MOT...LOC 0030Z 270DEG 31KT 4289 9497 4259 9517 $$ RSR
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 7:02 PM CDT | Tornado Warning | FSD | Dickinson | 28 min |
| Jun 11, 7:20 PM CDT | Tornado Warning | FSD | Clay | 25 min |
| Jun 11, 8:00 PM CDT | Tornado Warning | FSD | Buena Vista, Ida | 35 min |
| Jun 11, 8:49 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 26 min |
| Jun 11, 11:08 PM CDT | River Flood Warning | FSD | Cherokee | 5 days |
| Jun 12, 9:39 AM CDT | River Flood Warning | FSD | Clay, O'Brien | 60 hr |
| Jun 12, 9:39 AM CDT | River Flood Warning | FSD | Dickinson | 4 days |
Nearby
Tornado Warnings in Iowa, 2008Every tornado warning in 2008Tornadoes in 2008
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.