Alert archive / South Dakota / Tornado Warnings in 2015
Tornado Warning 7, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this tornado warning at May 10, 2015, 11:23 AM CDT for Davison County, Hanson County, Hutchinson County, South Dakota. It was in force for 37 min. 1 report 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
- May 10, 2015, 11:23 AM CDT (16:23 UTC)
- Expired
- May 10, 2015, 12:00 PM CDT
- In force
- 37 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.25 in
Counties Davison County, SD, Hanson County, SD, Hutchinson County, SD
The radar
The Sioux Falls radar (KFSD), 107 km from the middle of the area, began a volume at 16:25 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 |
|---|---|---|---|
| May 10, 11:23 AM CDT | TORNADO | 4 W Ethan, SD | TORNADO ON THE GROUND. |
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 |
|---|---|---|---|
| May 10, 10:46 AM CDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Aberdeen, SD (KABR), launched 12:00Z, 4.4 hours before the alert went out and 140 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 483 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 389 m²/s²
- 0-3 km storm-relative helicity
- 692 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
497
WFUS53 KFSD 101623
TORFSD
SDC035-061-067-101700-
/O.NEW.KFSD.TO.W.0007.150510T1623Z-150510T1700Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1123 AM CDT SUN MAY 10 2015
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
* TORNADO WARNING FOR...
DAVISON COUNTY IN SOUTHEASTERN SOUTH DAKOTA...
NORTHWESTERN HUTCHINSON COUNTY IN SOUTHEASTERN SOUTH DAKOTA...
NORTHWESTERN HANSON COUNTY IN SOUTHEASTERN SOUTH DAKOTA...
* UNTIL NOON CDT
* AT 1123 AM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
TORNADO WAS LOCATED NEAR ETHAN...OR 12 MILES SOUTH OF MITCHELL...
MOVING NORTH AT 30 MPH.
HAZARD...TORNADO AND HALF DOLLAR SIZE HAIL.
SOURCE...RADAR INDICATED ROTATION.
IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT
SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED.
DAMAGE TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR. TREE
DAMAGE IS LIKELY.
* THIS DANGEROUS STORM WILL BE NEAR...
MITCHELL AND LOOMIS AROUND 1155 AM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN A
MOBILE HOME...OR IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL
SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4385 9798 4383 9783 4347 9799 4349 9812
4350 9812 4350 9823 4385 9819
TIME...MOT...LOC 1623Z 191DEG 25KT 4356 9809
TORNADO...RADAR INDICATED
HAIL...1.25IN
$$
BT3 follow-up statements
108
WWUS53 KFSD 101629
SVSFSD
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1129 AM CDT SUN MAY 10 2015
SDC035-061-067-101700-
/O.CON.KFSD.TO.W.0007.000000T0000Z-150510T1700Z/
DAVISON SD-HUTCHINSON SD-HANSON SD-
1129 AM CDT SUN MAY 10 2015
...A TORNADO WARNING REMAINS IN EFFECT UNTIL NOON CDT FOR DAVISON...
NORTHWESTERN HUTCHINSON AND NORTHWESTERN HANSON COUNTIES...
AT 1129 AM CDT...A CONFIRMED TORNADO WAS LOCATED NEAR ETHAN...OR 9
MILES SOUTH OF MITCHELL...MOVING NORTH AT 30 MPH.
HAZARD...DAMAGING TORNADO AND HALF DOLLAR SIZE HAIL.
SOURCE...WEATHER SPOTTERS CONFIRMED TORNADO 4 MILES WEST OF ETHAN AT
1123 AM.
IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT
SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE
TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR. TREE DAMAGE IS
LIKELY.
THIS TORNADO WILL BE NEAR...
MITCHELL AND LOOMIS AROUND 1155 AM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TO REPEAT...A TORNADO IS ON THE GROUND. TAKE COVER NOW! MOVE TO A
BASEMENT OR AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY
BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN A MOBILE HOME...OR
IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4385 9798 4383 9783 4347 9799 4349 9812
4350 9812 4350 9823 4385 9819
TIME...MOT...LOC 1629Z 191DEG 25KT 4360 9808
TORNADO...OBSERVED
HAIL...1.25IN
$$
BT941
WWUS53 KFSD 101638
SVSFSD
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1138 AM CDT SUN MAY 10 2015
SDC035-061-067-101700-
/O.CON.KFSD.TO.W.0007.000000T0000Z-150510T1700Z/
DAVISON SD-HUTCHINSON SD-HANSON SD-
1138 AM CDT SUN MAY 10 2015
...A TORNADO WARNING REMAINS IN EFFECT UNTIL NOON CDT FOR DAVISON...
NORTHWESTERN HUTCHINSON AND NORTHWESTERN HANSON COUNTIES...
AT 1136 AM CDT... TWO TORNADO PRODUCING STORMS WERE LOCATED IN
DAVISON COUNTY. THE FIRST IS 8 MILES SOUTH OF MITCHELL. THE SECOND
IS NEAR ETHAN...MOVING NORTHEAST AT 30 MPH.
HAZARD...DAMAGING TORNADO AND HALF DOLLAR SIZE HAIL.
SOURCE...WEATHER SPOTTERS CONFIRMED TORNADO WITH THE FIRST TORNADIC
CIRCULATION.
IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT
SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE
TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR. TREE DAMAGE IS
LIKELY.
THESE TORNADIC STORMS WILL BE NEAR...
MITCHELL AND LOOMIS AROUND 1200 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TO REPEAT...A TORNADO IS ON THE GROUND. TAKE COVER NOW! MOVE TO A
BASEMENT OR AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY
BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN A MOBILE HOME...OR
IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4385 9798 4383 9783 4347 9799 4349 9812
4350 9812 4350 9823 4385 9819
TIME...MOT...LOC 1636Z 206DEG 15KT 4362 9809 4353 9802
TORNADO...OBSERVED
HAIL...1.25IN
$$
BT318
WWUS53 KFSD 101651
SVSFSD
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1151 AM CDT SUN MAY 10 2015
SDC035-061-067-101700-
/O.CON.KFSD.TO.W.0007.000000T0000Z-150510T1700Z/
DAVISON SD-HUTCHINSON SD-HANSON SD-
1151 AM CDT SUN MAY 10 2015
...A TORNADO WARNING REMAINS IN EFFECT UNTIL NOON CDT FOR DAVISON...
NORTHWESTERN HUTCHINSON AND NORTHWESTERN HANSON COUNTIES...
AT 1149 AM CDT...SEVERE THUNDERSTORMS CAPABLE OF PRODUCING TORNADOES
WERE LOCATED ALONG A LINE EXTENDING FROM NEAR LOOMIS TO NEAR
MITCHELL...MOVING NORTH AT 35 MPH.
HAZARD...TORNADO AND HALF DOLLAR SIZE HAIL.
SOURCE...RADAR INDICATED ROTATION. NATIONAL WEATHER SERVICE DOPPLER
RADAR HAS SHOWN THE CIRCLUATION JUSSOUTH OF MITCHELL HAS
STREGNTHENED. IF YOU ARE IN THE PATH OF THIS STORM...SEEK SHELTER
NOW!! THERE ARE ADDITIONAL STORMS CAPABLE OF PRODUCING
TORNADOES...ONE A FEW MILES WEST OF MITCHELL...AND A THIRS TO THE
SOUTH A FEW MILES NORTH OF ETHAN.
IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT
SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE
TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR. TREE DAMAGE IS
LIKELY.
THESE DANGEROUS STORMS WILL BE NEAR...
LOOMIS AROUND 1155 AM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN A
MOBILE HOME...OR IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL
SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4385 9798 4383 9783 4347 9799 4349 9812
4350 9812 4350 9823 4385 9819
TIME...MOT...LOC 1649Z 175DEG 28KT 4376 9809 4366 9804
TORNADO...RADAR INDICATED
HAIL...1.25IN
$$
BTThe office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 10, 9:54 AM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Douglas | 36 min |
| May 10, 10:16 AM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Douglas, Hutchinson | 29 min |
| May 10, 10:29 AM CDT | Tornado Warning | FSD | Charles Mix, Douglas, Hutchinson | 31 min |
| May 10, 10:55 AM CDT | Tornado Warning | FSD | Davison, Douglas, Hutchinson | 35 min |
| May 10, 11:55 AM CDT | Tornado Warning | FSD | Davison, Hanson, Sanborn | 35 min |
| May 10, 12:27 PM CDT | Severe Thunderstorm Warning | FSD | Davison, Hanson, Miner, Sanborn | 33 min |
| May 10, 12:28 PM CDT | Tornado Warning | FSD | Davison, Hanson, Miner, Sanborn | 32 min |
| May 10, 1:40 PM CDT | Severe Thunderstorm Warning | FSD | Union | 35 min |
| May 10, 1:57 PM CDT | Severe Thunderstorm Warning | FSD | Hutchinson, McCook, Turner | 33 min |
| May 10, 2:02 PM CDT | Severe Thunderstorm Warning | FSD | Union | 28 min |
| May 10, 2:51 PM CDT | Tornado Warning | FSD | Lincoln, Union | 24 min |
| May 10, 3:15 PM CDT | Severe Thunderstorm Warning | FSD | Union | 30 min |
| May 10, 3:27 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln | 33 min |
| May 10, 4:34 PM CDT | Flash Flood Warning | FSD | Lincoln | 4 hr |
| May 10, 4:56 PM CDT | Severe Thunderstorm Warning | FSD | Beadle, Sanborn | 34 min |
Nearby
Tornado Warnings in South Dakota, 2015Every tornado warning in 2015Tornadoes in 2015
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.