Alert archive / South Dakota / Tornado Warnings in 2017
Tornado Warning 20, NWS Aberdeen, SD
NWS Aberdeen, SD issued this tornado warning at Sep 19, 2017, 8:53 PM CDT for 4 counties in South Dakota. It was in force for 37 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
- Sep 19, 2017, 8:53 PM CDT (01:53 UTC)
- Expired
- Sep 19, 2017, 9:30 PM CDT
- In force
- 37 min
- Issued by
- NWS Aberdeen, SD
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.5 in
Counties Clark County, SD, Codington County, SD, Day County, SD, Spink County, SD
The radar
The Aberdeen radar (KABR), 79 km from the middle of the area, began a volume at 01:55 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 |
|---|---|---|---|
| Sep 19, 8:55 PM CDT | TORNADO | 4 Sw Clark, SD | TRAINED SPOTTER REPORTED TORNADO. |
| Sep 19, 9:26 PM CDT | TORNADO | Bradley, SD | BRIEF TOUCHDOWN REPORTED BY WXNATION TV METEOROLOGIST. |
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 |
|---|---|---|---|
| Sep 19, 3:37 PM CDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 1.9 hours before the alert went out and 50 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
- 2563 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 1127 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 229 m²/s²
- 0-3 km storm-relative helicity
- 239 m²/s²
- Significant tornado parameter
- 2.6
- Supercell composite
- 16.8
The text
As transmitted.
565
WFUS53 KABR 200153
TORABR
SDC025-029-037-115-200230-
/O.NEW.KABR.TO.W.0020.170920T0153Z-170920T0230Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service ABERDEEN SD
Issued by National Weather Service Sioux Falls SD
853 PM CDT TUE SEP 19 2017
The National Weather Service in ABERDEEN has issued a
* Tornado Warning for...
South central Day County in northeastern South Dakota...
Northern Clark County in northeastern South Dakota...
East central Spink County in northeastern South Dakota...
West central Codington County in northeastern South Dakota...
* Until 930 PM CDT
* At 853 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Clark, moving northeast at 45 mph.
HAZARD...Tornado and ping pong ball 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...
Clark around 900 PM CDT.
Hillcrest Colony around 910 PM CDT.
Garden City around 915 PM CDT.
Bradley around 920 PM CDT.
Wallace and Swan Lake around 925 PM 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.
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
&&
LAT...LON 4471 9789 4492 9809 4525 9767 4499 9729
TIME...MOT...LOC 0153Z 223DEG 38KT 4484 9783
TORNADO...RADAR INDICATED
HAIL...1.50IN
$$
Ferguson2 follow-up statements
244
WWUS53 KABR 200210
SVSABR
Severe Weather Statement
National Weather Service Aberdeen SD
910 PM CDT TUE SEP 19 2017
SDC115-200219-
/O.CAN.KABR.TO.W.0020.000000T0000Z-170920T0230Z/
Spink SD-
910 PM CDT TUE SEP 19 2017
...THE TORNADO WARNING FOR EAST CENTRAL SPINK COUNTY IS CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
A tornado watch remains in effect until midnight CDT for northeastern
South Dakota.
LAT...LON 4499 9729 4471 9789 4480 9798 4489 9798
4490 9799 4500 9798 4525 9767
TIME...MOT...LOC 0209Z 221DEG 33KT 4495 9770
$$
SDC025-029-037-200230-
/O.CON.KABR.TO.W.0020.000000T0000Z-170920T0230Z/
Day SD-Clark SD-Codington SD-
910 PM CDT TUE SEP 19 2017
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 PM CDT FOR SOUTH
CENTRAL DAY...NORTHERN CLARK AND WEST CENTRAL CODINGTON COUNTIES...
At 909 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Hillcrest Colony, or near Clark, moving northeast at
40 mph.
HAZARD...Tornado and ping pong ball size hail.
SOURCE...Weather spotters reported a funnel cloud.
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...
Garden City around 915 PM CDT.
Bradley around 925 PM CDT.
Wallace and Swan Lake around 930 PM 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.
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
&&
LAT...LON 4499 9729 4471 9789 4480 9798 4489 9798
4490 9799 4500 9798 4525 9767
TIME...MOT...LOC 0209Z 221DEG 33KT 4495 9770
TORNADO...RADAR INDICATED
HAIL...1.50IN
$$
Connelly473
WWUS53 KABR 200232
SVSABR
Severe Weather Statement
National Weather Service Aberdeen SD
932 PM CDT TUE SEP 19 2017
SDC025-029-037-200241-
/O.EXP.KABR.TO.W.0020.000000T0000Z-170920T0230Z/
Day SD-Clark SD-Codington SD-
932 PM CDT TUE SEP 19 2017
...THE TORNADO WARNING FOR SOUTH CENTRAL DAY...NORTHERN CLARK AND
WEST CENTRAL CODINGTON COUNTIES HAS EXPIRED...
The storm which prompted the warning has moved out of the area.
Therefore the warning has been allowed to expire. However gusty
winds are still possible with this thunderstorm.
A tornado watch remains in effect until midnight CDT for northeastern
South Dakota.
Remember, a Tornado Warning still remains in effect for eastern
Clark and northwest Codington counties.
LAT...LON 4499 9729 4471 9789 4480 9798 4489 9798
4490 9799 4500 9798 4525 9767
TIME...MOT...LOC 0231Z 223DEG 38KT 4511 9749
$$
ConnellyThe office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 19, 7:01 PM CDT | Tornado Warning | ABR | Campbell, Edmunds, McPherson, Walworth | 29 min |
| Sep 19, 7:23 PM CDT | Tornado Warning | ABR | McPherson | 20 min |
| Sep 19, 7:29 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Marshall | 46 min |
| Sep 19, 7:40 PM CDT | Tornado Warning | ABR | Spink | 35 min |
| Sep 19, 7:46 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Spink | 44 min |
| Sep 19, 7:52 PM CDT | Tornado Warning | ABR | McPherson | 24 min |
| Sep 19, 8:12 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Marshall | 33 min |
| Sep 19, 8:13 PM CDT | Tornado Warning | ABR | Clark, Spink | 32 min |
| Sep 19, 8:23 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Day, Marshall, Spink | 37 min |
| Sep 19, 8:28 PM CDT | Tornado Warning | ABR | Clark, Spink | 32 min |
| Sep 19, 8:41 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Marshall | 34 min |
| Sep 19, 9:24 PM CDT | Tornado Warning | ABR | Clark, Codington, Day | 36 min |
| Sep 19, 9:54 PM CDT | Tornado Warning | ABR | Codington, Day, Grant, Roberts | 15 min |
| Sep 19, 10:43 PM CDT | Areal Flood Warning | ABR | Codington | 3 hr |
| Sep 19, 10:49 PM CDT | Severe Thunderstorm Warning | ABR | Grant, Roberts | 41 min |
| Sep 19, 11:26 PM CDT | Severe Thunderstorm Warning | ABR | Grant, Roberts | 19 min |
Nearby
Tornado Warnings in South Dakota, 2017Every tornado warning in 2017Tornadoes in 2017
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.