Alert archive / South Dakota / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 5, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Apr 15, 2012, 11:45 AM CDT for 4 counties in South Dakota. It was in force for 45 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
- Apr 15, 2012, 11:45 AM CDT (16:45 UTC)
- Expired
- Apr 15, 2012, 12:30 PM CDT
- In force
- 45 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Beadle County, SD, Kingsbury County, SD, Miner County, SD, Sanborn County, SD
The radar
The Sioux Falls radar (KFSD), 113 km from the middle of the area, began a volume at 16:45 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 |
|---|---|---|---|
| Apr 15, 11:50 AM CDT | HAIL 1 | 2 N Artesian, SD | MOSTLY DIME SIZE BUT A FEW AS BIG AS QUARTERS |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Aberdeen, SD (KABR), launched 12:00Z, 4.8 hours before the alert went out and 91 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
- 484 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 91 m²/s²
- 0-3 km storm-relative helicity
- 656 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
240 WUUS53 KFSD 151645 SVRFSD SDC005-077-097-111-151730- /O.NEW.KFSD.SV.W.0005.120415T1645Z-120415T1730Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 1145 AM CDT SUN APR 15 2012 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN BEADLE COUNTY IN EAST CENTRAL SOUTH DAKOTA... SOUTHWESTERN KINGSBURY COUNTY IN EAST CENTRAL SOUTH DAKOTA... NORTHWESTERN MINER COUNTY IN EAST CENTRAL SOUTH DAKOTA... EASTERN SANBORN COUNTY IN EAST CENTRAL SOUTH DAKOTA... * UNTIL 1230 PM CDT * AT 1145 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR ARTESIAN...OR 17 MILES NORTH OF MITCHELL...AND MOVING NORTH AT 35 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... FEDORA AROUND 1150 AM CDT... CARTHAGE AROUND 1210 PM CDT... THIS STORM HAS A HISTORY OF PRODUCING QUARTER SIZED HAIL...AND IS NOW EXHIBITING WIND POTENTIAL. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. && LAT...LON 4438 9791 4431 9762 4387 9782 4394 9810 TIME...MOT...LOC 1645Z 199DEG 29KT 4400 9794 WIND...HAIL 60MPH 1.00IN $$ MJF
2 follow-up statements
112 WWUS53 KFSD 151706 SVSFSD SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 1206 PM CDT SUN APR 15 2012 SDC005-077-097-111-151730- /O.CON.KFSD.SV.W.0005.000000T0000Z-120415T1730Z/ SANBORN SD-MINER SD-KINGSBURY SD-BEADLE SD- 1206 PM CDT SUN APR 15 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN BEADLE...SOUTHWESTERN KINGSBURY...NORTHWESTERN MINER AND NORTHEASTERN SANBORN COUNTIES UNTIL 1230 PM CDT... AT 1206 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED 8 MILES WEST OF CARTHAGE...OR 23 MILES SOUTHEAST OF HURON...MOVING NORTH AT 35 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... IROQUOIS AROUND 1230 PM CDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. && LAT...LON 4406 9780 4411 9800 4438 9791 4431 9762 TIME...MOT...LOC 1706Z 199DEG 29KT 4416 9786 WIND...HAIL <58MPH 1.00IN $$ MJF
800 WWUS53 KFSD 151721 SVSFSD SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 1221 PM CDT SUN APR 15 2012 SDC005-077-097-111-151732- /O.EXP.KFSD.SV.W.0005.000000T0000Z-120415T1730Z/ SANBORN SD-MINER SD-KINGSBURY SD-BEADLE SD- 1221 PM CDT SUN APR 15 2012 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BEADLE... SOUTHWESTERN KINGSBURY...NORTHWESTERN MINER AND NORTHEASTERN SANBORN COUNTIES WILL EXPIRE AT 1230 PM CDT... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. LAT...LON 4406 9780 4411 9800 4438 9791 4431 9762 TIME...MOT...LOC 1722Z 199DEG 29KT 4423 9781 $$ MJF
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 15, 11:22 AM CDT | Severe Thunderstorm Warning | FSD | Davison, Hanson, Miner, Sanborn | 23 min |
| Apr 15, 2:56 PM CDT | Tornado Warning | FSD | Bon Homme | 34 min |
| Apr 15, 3:19 PM CDT | Severe Thunderstorm Warning | FSD | Brookings, Moody | 16 min |
| Apr 15, 5:10 PM CDT | High Wind Warning | FSD | Aurora, Beadle, Bon Homme, Brookings, Brule, Charles Mix and 17 more | 11 hr |
| Apr 15, 5:10 PM CDT | Wind Advisory | FSD | Aurora, Brule, Charles Mix, Douglas, Gregory, Jerauld | 3 hr |
Nearby
Severe Thunderstorm Warnings in South Dakota, 2012Every severe thunderstorm warning in 2012
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.