Alert archive / Iowa / Tornado Warnings in 2008
Tornado Warning 38, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this tornado warning at Jun 11, 2008, 6:48 PM CDT for Clay County, Dickinson County, Iowa. It was in force for 42 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, 6:48 PM CDT (23:48 UTC)
- Expired
- Jun 11, 2008, 7:30 PM CDT
- In force
- 42 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
Counties Clay County, IA, Dickinson County, IA
The radar
The Sioux Falls radar (KFSD), 140 km from the middle of the area, began a volume at 23:48 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 11, 6:55 PM CDT | TORNADO | 3 Sw Spencer, IA | EXTENSIVE DAMAGE TO FARM...POWER LINES DOWN |
| Jun 11, 7:11 PM CDT | TORNADO | 2 N Dickens, IA | POLE BARN 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 12:00Z, 11.8 hours before the alert went out and 225 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
- 1784 J/kg
- Mixed-layer CIN
- -93 J/kg
- Mixed-layer LCL
- 818 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 548 m²/s²
- 0-3 km storm-relative helicity
- 862 m²/s²
- Significant tornado parameter
- 4.9
- Supercell composite
- 43.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS53 KFSD 112349 TORFSD IAC041-059-120030- /O.NEW.KFSD.TO.W.0038.080611T2348Z-080612T0030Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 648 PM CDT WED JUN 11 2008 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A * TORNADO WARNING FOR... CLAY COUNTY IN NORTHWEST IOWA SOUTHEASTERN DICKINSON COUNTY IN NORTHWEST IOWA * UNTIL 730 PM CDT * AT 644 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A TORNADO 2 MILES SOUTHEAST OF ROYAL...OR 10 MILES SOUTHWEST OF SPENCER...MOVING NORTHEAST AT 36 MPH. * THE TORNADO WILL BE NEAR... SPENCER AROUND 700 PM CDT... TERRIL AROUND 725 PM CDT... THIS REPLACES THE PREVIOUS WARNING FOR CLAY COUNTY. TAKE COVER NOW. THIS TORNADO IS WRAPPED IN RAIN. IF YOU WAIT TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE. 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 4297 9523 4305 9532 4342 9492 4317 9492 TIME...MOT...LOC 2348Z 220DEG 31KT 4306 9521 $$ CHAPMAN
4 follow-up statements
000 WWUS53 KFSD 112357 SVSFSD SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 655 PM CDT WED JUN 11 2008 IAC041-059-120030- /O.CON.KFSD.TO.W.0038.000000T0000Z-080612T0030Z/ DICKINSON IA-CLAY IA- 655 PM CDT WED JUN 11 2008 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR CLAY AND SOUTHEASTERN DICKINSON COUNTIES... AT 652 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A RAIN WRAPPED TORNADO. THIS TORNADO WAS LOCATED 3 MILES NORTH NORTHWEST OF ROSSIE...OR JUST SOUTHWEST OF SPENCER...MOVING NORTHEAST AT 31 MPH. THERE WAS DAMAGE TO AN ACREAGE. AT 654 PM CDT...THERE WAS DAMAGE TO A GRAIN BIN AND AUGER 4 MILES EAST OF ROYAL. THE TORNADO WILL BE NEAR... SPENCER AROUND 700 PM CDT... DICKENS AROUND 710 PM CDT... TERRIL AROUND 730 PM CDT... TAKE COVER NOW. THIS TORNADO IS WRAPPED IN RAIN. IF YOU WAIT TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE. A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT WEDNESDAY EVENING FOR NORTHWEST IOWA AND SOUTHWEST MINNESOTA AND NORTHEAST NEBRASKA AND SOUTHEAST SOUTH DAKOTA. LAT...LON 4297 9523 4305 9532 4342 9492 4317 9492 TIME...MOT...LOC 2355Z 218DEG 27KT 4310 9518 $$ CHAPMAN
000 WWUS53 KFSD 120013 SVSFSD SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 712 PM CDT WED JUN 11 2008 IAC041-059-120030- /O.CON.KFSD.TO.W.0038.000000T0000Z-080612T0030Z/ DICKINSON IA-CLAY IA- 712 PM CDT WED JUN 11 2008 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR CLAY AND SOUTHEASTERN DICKINSON COUNTIES... AT 712 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A TORNADO. THIS TORNADO WAS LOCATED 5 MILES NORTH OF DICKENS...OR 8 MILES NORTHEAST OF SPENCER...MOVING NORTHEAST AT 41 MPH. THE TORNADO WILL BE NEAR... TERRIL AROUND 720 PM CDT... AT 655 PM CDT...A FARM WAS EXTENSIVELY DAMAGED 3 MILES SOUTHWEST OF SPENCER. A TORNADO HAS BEEN CONFIRMED. TAKE COVER IN A STURDY BUILDING NOW. MOBILE HOMES AND VEHICLES ARE NOT SAFE. 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 4297 9523 4305 9532 4342 9492 4317 9492 TIME...MOT...LOC 0012Z 227DEG 35KT 4322 9500 $$ CHAPMAN
000 WWUS53 KFSD 120018 SVSFSD SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 717 PM CDT WED JUN 11 2008 IAC041-059-120030- /O.CON.KFSD.TO.W.0038.000000T0000Z-080612T0030Z/ DICKINSON IA-CLAY IA- 717 PM CDT WED JUN 11 2008 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR CLAY AND SOUTHEASTERN DICKINSON COUNTIES... AT 717 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A TORNADO. THIS TORNADO WAS LOCATED 6 MILES NORTHEAST OF DICKENS...OR 11 MILES EAST OF SPENCER...MOVING NORTHEAST AT 52 MPH. THIS IS AN EXTREMELY DANGEROUS AND LIFE THREATENING SITUATION. TAKE COVER NOW. A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT WEDNESDAY EVENING FOR NORTHWEST IOWA AND SOUTHWEST MINNESOTA AND NORTHEAST NEBRASKA AND SOUTHEAST SOUTH DAKOTA. LAT...LON 4297 9523 4305 9532 4342 9492 4317 9492 TIME...MOT...LOC 0017Z 213DEG 45KT 4323 9493 $$ CHAPMAN
000 WWUS53 KFSD 120032 SVSFSD SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 732 PM CDT WED JUN 11 2008 IAC041-059-120042- /O.EXP.KFSD.TO.W.0038.000000T0000Z-080612T0030Z/ DICKINSON IA-CLAY IA- 732 PM CDT WED JUN 11 2008 ...THE TORNADO WARNING FOR CLAY AND SOUTHEASTERN DICKINSON COUNTIES HAS EXPIRED... THE STORM HAS EXITED THE WARNED AREA. AT 711 PM CDT...A POLE SHED WAS DESTROYED TWO AND A HALF MILES NORTH OF DICKENS. 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 4297 9523 4305 9532 4342 9492 4317 9492 TIME...MOT...LOC 0018Z 213DEG 45KT 4324 9492 $$ CHAPMAN
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 5:14 AM CDT | Severe Thunderstorm Warning | FSD | Lyon, Sioux | 16 min |
| Jun 11, 6:13 AM CDT | Severe Thunderstorm Warning | FSD | Lyon, O'Brien, Osceola, Sioux | 32 min |
| Jun 11, 6:42 AM CDT | Severe Thunderstorm Warning | FSD | O'Brien, Osceola | 33 min |
| Jun 11, 7:14 AM CDT | Severe Thunderstorm Warning | FSD | Lyon, Osceola | 31 min |
| Jun 11, 10:22 AM CDT | Wind Advisory | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 5 hr |
| Jun 11, 3:58 PM CDT | Tornado Warning | FSD | Plymouth | 32 min |
| Jun 11, 4:57 PM CDT | Flash Flood Warning | FSD | Cherokee, O'Brien, Osceola | 2 hr |
| Jun 11, 4:57 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, O'Brien, Plymouth, Sioux | 33 min |
| Jun 11, 5:00 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Woodbury | 45 min |
| Jun 11, 5:10 PM CDT | Tornado Warning | FSD | Lyon, Osceola, Sioux | 35 min |
| Jun 11, 5:22 PM CDT | Tornado Warning | FSD | Cherokee, O'Brien, Osceola, Plymouth, Sioux | 23 min |
| Jun 11, 5:27 PM CDT | Tornado Warning | FSD | Cherokee, Plymouth, Woodbury | 48 min |
| Jun 11, 5:30 PM CDT | Flash Flood Warning | FSD | Cherokee, Plymouth, Woodbury | 68 min |
| Jun 11, 5:42 PM CDT | Tornado Warning | FSD | Osceola | 48 min |
| Jun 11, 5:46 PM CDT | Tornado Warning | FSD | Cherokee, O'Brien | 44 min |
| Jun 11, 6:16 PM CDT | Tornado Warning | FSD | Cherokee, Ida, Plymouth, Woodbury | 44 min |
| Jun 11, 6:22 PM CDT | Tornado Warning | FSD | Ida, Woodbury | 38 min |
| Jun 11, 6:28 PM CDT | Tornado Warning | FSD | Buena Vista, Cherokee, Clay, Dickinson, O'Brien | 32 min |
| Jun 11, 6:37 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Cherokee, Ida | 38 min |
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.