Alert archive / South Dakota / Tornado Warnings in 2016

Tornado Warning 13, NWS Rapid City, SD

July 26, 2016Fall River County, South Dakota

NWS Rapid City, SD issued this tornado warning at Jul 26, 2016, 6:38 PM MDT for Fall River County, South Dakota. It was in force for 16 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 26, 2016, 6:38 PM MDT (00:38 UTC)
Expired
Jul 26, 2016, 6:54 PM MDT
In force
16 min
Issued by
NWS Rapid City, SD
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

County Fall River County, SD

The radar

The Rapid City radar (KUDX), 129 km from the middle of the area, began a volume at 00:40 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jul 26, 5:05 PM MDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Rapid City, SD (KRAP), launched 00:00Z, 0.6 hours before the alert went out and 121 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.

Skew-T log-pSkew-T log-p diagram, Rapid City, SD at 00:00Z on 2016-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 850 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Rapid City, SD at 00:00Z on 2016-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -98 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
850 J/kg
Mixed-layer CIN
-152 J/kg
Mixed-layer LCL
2499 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
-98 m²/s²
0-3 km storm-relative helicity
-31 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.2

Open this sounding in Storm Lab

The text

As transmitted.

392 
WFUS53 KUNR 270038
TORUNR
SDC047-270115-
/O.NEW.KUNR.TO.W.0013.160727T0038Z-160727T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE RAPID CITY SD
638 PM MDT TUE JUL 26 2016

THE NATIONAL WEATHER SERVICE IN RAPID CITY HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTH CENTRAL FALL RIVER COUNTY IN SOUTHWESTERN SOUTH DAKOTA...

* UNTIL 715 PM MDT
    
* AT 637 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR RUMFORD...OR 16 MILES SOUTHEAST OF
  EDGEMONT...MOVING SOUTHEAST AT 30 MPH.

  HAZARD...TORNADO AND QUARTER 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...
  ARDMORE AROUND 650 PM MDT. 

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 4317 10374 4319 10348 4300 10332 4300 10365
TIME...MOT...LOC 0037Z 333DEG 26KT 4314 10359 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

JOHNSON
1 follow-up statement
106 
WWUS53 KUNR 270054
SVSUNR

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RAPID CITY SD
654 PM MDT TUE JUL 26 2016

SDC047-270104-
/O.CAN.KUNR.TO.W.0013.000000T0000Z-160727T0115Z/
FALL RIVER SD-
654 PM MDT TUE JUL 26 2016

...THE TORNADO WARNING FOR SOUTH CENTRAL FALL RIVER COUNTY IS
CANCELLED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER APPEARS CAPABLE OF PRODUCING A TORNADO.
THEREFORE THE WARNING HAS BEEN CANCELLED.  HOWEVER SMALL HAIL IS
STILL POSSIBLE WITH THIS THUNDERSTORM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM MDT FOR
SOUTHWESTERN SOUTH DAKOTA.

LAT...LON 4317 10374 4319 10348 4300 10332 4300 10365
TIME...MOT...LOC 0052Z 333DEG 26KT 4303 10351 

$$

JOHNSON

The office that day

Everything else NWS Rapid City, SD issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 26, 6:00 PM MDTFlash Flood WarningUNRMellette, Todd6 hr
Jul 26, 6:13 PM MDTSevere Thunderstorm WarningUNRTodd62 min
Jul 26, 6:23 PM MDTSpecial Weather StatementUNRTripp52 min
Jul 26, 6:28 PM MDTSevere Thunderstorm WarningUNRFall River, Oglala Lakota42 min
Jul 26, 6:29 PM MDTSevere Thunderstorm WarningUNRTripp61 min
Jul 26, 6:54 PM MDTSevere Thunderstorm WarningUNRTodd66 min
Jul 26, 7:07 PM MDTSevere Thunderstorm WarningUNRTripp53 min
Jul 26, 7:34 PM MDTSevere Thunderstorm WarningUNRBennett, Todd56 min
Jul 27, 11:37 AM MDTSpecial Weather StatementUNRHarding53 min
Jul 27, 12:37 PM MDTSpecial Weather StatementUNRPerkins38 min
Jul 27, 1:01 PM MDTSpecial Weather StatementUNRCuster44 min
Jul 27, 1:55 PM MDTSpecial Weather StatementUNRCuster50 min
Jul 27, 1:59 PM MDTSpecial Weather StatementUNRTodd46 min
Jul 27, 2:05 PM MDTSpecial Weather StatementUNRHaakon40 min
Jul 27, 2:21 PM MDTSevere Thunderstorm WarningUNRCuster, Fall River, Oglala Lakota54 min
Jul 27, 2:51 PM MDTSpecial Weather StatementUNRHaakon39 min
Jul 27, 3:38 PM MDTSpecial Weather StatementUNRTodd52 min
Jul 27, 3:43 PM MDTSpecial Weather StatementUNRHaakon, Jackson47 min
Jul 27, 4:31 PM MDTSpecial Weather StatementUNRMellette, Todd59 min
Jul 27, 5:33 PM MDTSpecial Weather StatementUNRTodd57 min

Nearby

Tornado Warnings in South Dakota, 2016Every tornado warning in 2016Tornadoes in 2016

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.