Alert archive / South Dakota / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 101, NWS Aberdeen, SD

June 26, 20085 counties in South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jun 26, 2008, 8:21 PM MDT for 5 counties in South Dakota. It was in force for 54 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: Jun 26, 2008, 8:21 PM MDT (02:21 UTC)
Expired: Jun 26, 2008, 9:15 PM MDT
In force: 54 min
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon

Counties Dewey County, SD, Hyde County, SD, Potter County, SD, Sully County, SD, Walworth County, SD

The radar

The Aberdeen radar (KABR), 140 km from the middle of the area, began a volume at 02:24 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

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 26, 6:14 PM MDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 2.4 hours before the alert went out and 139 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 170 J/kg
Mixed-layer CIN: -215 J/kg
Mixed-layer LCL: 1702 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: -19 m²/s²
0-3 km storm-relative helicity: 3 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS53 KABR 270221
SVRABR
SDC041-069-107-119-129-270315-
/O.NEW.KABR.SV.W.0101.080627T0221Z-080627T0315Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ABERDEEN SD
921 PM CDT THU JUN 26 2008

THE NATIONAL WEATHER SERVICE IN ABERDEEN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EXTREME NORTHWESTERN HYDE COUNTY IN CENTRAL SOUTH DAKOTA...
  NORTHEASTERN SULLY COUNTY IN CENTRAL SOUTH DAKOTA...
  EAST CENTRAL DEWEY COUNTY IN NORTH CENTRAL SOUTH DAKOTA...
  POTTER COUNTY IN NORTH CENTRAL SOUTH DAKOTA...
  THIS INCLUDES THE CITY OF GETTYSBURG...
  EXTREME SOUTHWESTERN WALWORTH COUNTY IN NORTH CENTRAL SOUTH
  DAKOTA...

* UNTIL 1015 PM CDT/915 PM MDT/

* AT 819 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
  STORM WAS LOCATED NEAR WHITLOCKS BAY REC AREA...OR 20 MILES WEST OF
  GETTYSBURG...MOVING SOUTHEAST AT 27 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  WHITLOCKS BAY REC AREA AROUND 930 PM CDT...
  GORMAN AROUND 955 PM CDT...
  GETTYSBURG AROUND 1005 PM CDT...

THIS WARNING INCLUDES HIGHWAY 83 BETWEEN MILE MARKERS 165 AND 186.

THIS WARNING INCLUDES HIGHWAY 212 BETWEEN MILE MARKERS 182 AND 241.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE OFFICE IN
ABERDEEN.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 AM CDT FRIDAY MORNING/200
AM MDT FRIDAY MORNING/ FOR NORTHEASTERN SOUTH DAKOTA.

LAT...LON 4519 10009 4504 9957 4475 9975 4512 10076
      4537 10058
TIME...MOT...LOC 0221Z 295DEG 23KT 4509 10032

$$
CONNELLY

2 follow-up statements

000 
WWUS53 KABR 270254
SVSABR

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
954 PM CDT THU JUN 26 2008

SDC129-270304-
/O.CAN.KABR.SV.W.0101.000000T0000Z-080627T0315Z/
WALWORTH SD-
954 PM CDT THU JUN 26 2008

...THE SEVERE THUNDERSTORM WARNING FOR EXTREME SOUTHWESTERN WALWORTH
COUNTY IS CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 AM CDT FRIDAY MORNING FOR
NORTHEASTERN SOUTH DAKOTA.

LAT...LON 4520 10011 4519 10010 4517 10000 4515 9997
      4516 9995 4513 9988 4504 9957 4475 9975
      4497 10034 4523 10020
TIME...MOT...LOC 0254Z 295DEG 23KT 4500 10005

$$

SDC041-069-107-119-270315-
/O.CON.KABR.SV.W.0101.000000T0000Z-080627T0315Z/
DEWEY SD-POTTER SD-SULLY SD-HYDE SD-
954 PM CDT THU JUN 26 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM
CDT/915 PM MDT/ FOR EXTREME NORTHWESTERN HYDE...NORTHEASTERN SULLY...
POTTER AND EXTREME EAST CENTRAL DEWEY COUNTIES...

AT 950 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL.  THIS STORM WAS LOCATED 6 MILES NORTH OF GORMAN...OR 6 MILES
WEST OF GETTYSBURG...MOVING SOUTHEAST AT 26 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  GETTYSBURG AROUND 1005 PM CDT...

THIS WARNING INCLUDES HIGHWAY 83 BETWEEN MILE MARKERS 165 AND 186.

THIS WARNING INCLUDES HIGHWAY 212 BETWEEN MILE MARKERS 207 AND 241.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 AM CDT FRIDAY MORNING/200
AM MDT FRIDAY MORNING/ FOR NORTHEASTERN SOUTH DAKOTA.

LAT...LON 4520 10011 4519 10010 4517 10000 4515 9997
      4516 9995 4513 9988 4504 9957 4475 9975
      4497 10034 4523 10020
TIME...MOT...LOC 0254Z 295DEG 23KT 4500 10005

$$

000 
WWUS53 KABR 270318
SVSABR

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
1018 PM CDT THU JUN 26 2008

SDC041-069-107-119-270328-
/O.EXP.KABR.SV.W.0101.000000T0000Z-080627T0315Z/
DEWEY SD-POTTER SD-SULLY SD-HYDE SD-
1018 PM CDT THU JUN 26 2008

...THE SEVERE THUNDERSTORM WARNING FOR EXTREME NORTHWESTERN HYDE...
NORTHEASTERN SULLY...POTTER AND EXTREME EAST CENTRAL DEWEY COUNTIES 
HAS EXPIRED...

AT 1013 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THAT THE THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE WEAKENED.
THEREFORE...THE SEVERE THUNDERSTORM WARNING HAS BEEN ALLOWED TO
EXPIRE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 AM CDT FRIDAY MORNING/200
AM MDT FRIDAY MORNING/ FOR NORTHEASTERN SOUTH DAKOTA.

LAT...LON 4520 10011 4519 10010 4517 10000 4515 9997
      4516 9995 4513 9988 4504 9957 4475 9975
      4497 10034 4523 10020
TIME...MOT...LOC 0254Z 295DEG 23KT 4500 10005

$$
CONNELLY

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Aberdeen, SD wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 26, 6:54 PM MDT, 1 hour 27 minutes earlier.

Area forecast discussion, Jun 26, 6:54 PM MDT, 1 hour 27 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ABERDEEN SD
754 PM CDT THU JUN 26 2008

.UPDATE...
ISSUED TORNADO WATCH FOR MUCH OF THE CWA INTO THE EARLY MORNING
HOURS. SCATTERED TO NUMEROUS TSRAS ARE DEVELOPING OUT WEST OF THE
RIVER AND WILL CONTINUE TO MOVE/DEVELOP ACROSS THE REST OF THE
AREA THROUGH THE NIGHT. UPDATED FORECAST.

&&
.PREV DISCUSSION...
.SHORT TERM...THROUGH FRIDAY

18Z SOUNDING DEPICTS FAIRLY STEEP LAPSE RATES OVERHEAD...WITH HIGH
DEWPOINTS AND TEMPERATURES IN THE MID 80S. GUIDANCE CONTINUES TO SUGGEST
HIGHER DEGREE OF INSTABILITY ACROSS CENTRAL AND WESTERN
COUNTIES...DESPITE WARMER H7 TEMPERATURES. SUSPECT CAPE OVER THE
NORTHEAST UNDERDONE. SEVERAL BOUNDARIES IN THE CWA THIS
AFTERNOON...MAINLY IN WESTERN/CENTRAL SD...BUT ALSO SEEING ANOTHER
FORM IN ASSOCIATION WITH MID LEVEL CONVECTION ACROSS HIGHWAY 14.
ALOFT...WILL SEE JET STREAK/SHORTWAVE IN MT MOVE EAST WITH ANOTHER
WEAK SHORTWAVE IN EASTERN SD. THESE SYNOPTIC FEATURES WILL PROVIDE
A THREAT FOR THUNDERSTORM DEVELOPMENT THIS AFTERNOON AND EVENING
IN TO THE OVERNIGHT HOURS AS SHORTWAVE HEADS ACROSS THE CWA.
HODOGRAPHS REMAINS FAVORABLE FOR SUPERCELL DEVELOPMENT WITH A DEEP
EASTERLY LOW LEVEL FLOW. WHILE LACKING STRONG H7 WINDS...MODELS
CONTINUE TO ADVERTISE LINE EVOLUTION AS SYSTEM MOVES ACROSS THE
CWA.

.LONG TERM...SATURDAY THROUGH THURSDAY
THE LONG TERM IS A LITTLE LONGER THAN NORMAL AS SHORT TERM NEEDS
TO FOCUS ON UPCOMING EVENING. THIS LONG RANGE WILL SEE A CHANGE IN
THE UPPER LEVEL PATTERN. THE PERIOD OPENS WITH A LARGE H5 UPPER
LEVEL LOW IN EASTERN NORTH DAKOTA. BY SUNDAY MORNING THE UPPER
LEVEL LOW MOVES OVER THE GREAT LAKES AS THE H5 UPPER LEVEL RIDGE
REBUILDS. FOR MOST OF THE UPCOMING WEEK THE UPPER LEVEL RIDGE WILL
LIE ALONG THE ROCKIES WITH THIS AREA IN A MOSTLY NORTH FLOW. LATER
IN THE PERIOD THE RIDGE WEAKENS AND SEVERAL SMALL FEATURES ARE
NOTED IN THE FLOW. AT THE SURFACE BROAD HIGH PRESSURE WILL BUILD
IN TO THE AREA AND REMAIN UNTIL NEXT WEEK. AS THE RIDGE WEAKENS
FLOW ACROSS THE ROCKIES WILL HELP SET UP A LEE SIDE TROUGH THAT
WILL APPROACH THE AREA NEAR THE END OF THE LONG TERM.

&&

.AVIATION...
VFR SKIES ARE EXPECTED THROUGH THE NIGHT AND DAY FRIDAY. EXPECT SCATTERED
TO NUMEROUS SHOWERS AND THUNDERSTORMS TO TRAVERSE THE AREA THROUGH
THE NIGHT. HAVE IN VICINITY THUNDER IN FOR ALL TAF SITES AND WILL
AMEND IF A THUNDERSTORM IS EXPECTED AT A STATION.

&&

.ABR WATCHES/WARNINGS/ADVISORIES...
SD...NONE.
MN...NONE.
&&

UPDATE...MOHR
SHORT TERM...TMT
LONG TERM...KEEFE
AVIATION...MOHR

WEATHER.GOV/ABERDEEN

Hazardous weather outlook, Jun 26, 11:16 AM MDT, 9 hours 5 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ABERDEEN SD
1216 PM CDT THU JUN 26 2008

MNZ039-046-SDZ003>011-015>023-033>037-045-048-051-271730-
TRAVERSE-BIG STONE-CORSON-CAMPBELL-MCPHERSON-BROWN-MARSHALL-
ROBERTS-WALWORTH-EDMUNDS-DAY-DEWEY-POTTER-FAULK-SPINK-CLARK-
CODINGTON-GRANT-HAMLIN-DEUEL-STANLEY-SULLY-HUGHES-HYDE-HAND-JONES-
LYMAN-BUFFALO-
1216 PM CDT THU JUN 26 2008 /1116 AM MDT THU JUN 26 2008/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL
MINNESOTA...CENTRAL SOUTH DAKOTA...NORTH CENTRAL SOUTH DAKOTA AND
NORTHEAST SOUTH DAKOTA.

.DAY ONE...THIS AFTERNOON AND TONIGHT
THERE IS A SLIGHT RISK OF SEVERE STORMS THIS AFTERNOON AND
TONIGHT. ISOLATED THUNDERSTORMS WILL MOVE ACROSS CENTRAL SOUTH
DAKOTA EARLY THIS AFTERNOON. THESE STORMS ARE NOT EXPECTED TO BE SEVERE.

BY LATE AFTERNOON THE POTENTIAL FOR SEVERE THUNDERSTORMS WILL
INCREASE AS ADDITIONAL STRONG THUNDERSTORMS DEVELOP OVER WESTERN
SOUTH DAKOTA. THESE STORMS ARE EXPECTED TO MOVE SOUTHEASTWARD
DURING THE EVENING REACHING FAR EASTERN PORTIONS OF SOUTH DAKOTA
OVERNIGHT. LARGE HAIL AND DAMAGING WINDS WILL BE THE PRIMARY
THREATS...WITH ISOLATED TORNADOES POSSIBLE.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

THUNDERSTORMS ARE POSSIBLE ACROSS THE AREA ON FRIDAY.

THERE WILL BE A CHANCE OF ADDITIONAL THUNDERSTORMS ON SATURDAY
AND SUNDAY AFTERNOON...MAINLY ACROSS EASTERN SOUTH DAKOTA.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS LIKELY THIS EVENING AND OVERNIGHT.

FOWLE

In the hours before

Local storm report, Jun 26, 7:11 PM MDT, 1 hour 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
811 PM CDT THU JUN 26 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0811 PM     HAIL             TIMBER LAKE             45.43N 101.07W
06/26/2008  E0.88 INCH       DEWEY              SD   FIRE DEPT/RESCUE

&&

ATG

Local storm report, Jun 26, 7:12 PM MDT, 1 hour 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
812 PM CDT THU JUN 26 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0744 PM     HAIL             8 N ISABEL              45.51N 101.43W
06/26/2008  E2.75 INCH       CORSON             SD   LAW ENFORCEMENT

&&

ATG

Local storm report, Jun 26, 7:13 PM MDT, 1 hour 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
813 PM CDT THU JUN 26 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0813 PM     HAIL             TIMBER LAKE             45.43N 101.07W
06/26/2008  E1.00 INCH       DEWEY              SD   TRAINED SPOTTER

&&

ATG

Local storm report, Jun 26, 7:21 PM MDT, 1 hour before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
821 PM CDT THU JUN 26 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0750 PM     HAIL             6 NE ISABEL             45.46N 101.34W
06/26/2008  E1.75 INCH       DEWEY              SD   PUBLIC

&&

ATG

Local storm report, Jun 26, 7:27 PM MDT, 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
827 PM CDT THU JUN 26 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0810 PM     TORNADO          8 N PARADE              45.14N 101.10W
06/26/2008                   DEWEY              SD   STORM CHASER

            INITIAL TOUCH DOWN FOR THREE TO FOUR MINUTES.

&&

MFOWLE

Local storm report, Jun 26, 7:48 PM MDT, 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
848 PM CDT THU JUN 26 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0805 PM     HAIL             TIMBER LAKE             45.43N 101.07W
06/26/2008  E0.88 INCH       DEWEY              SD   PUBLIC

&&

ATG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 26, 6:10 PM MDT	Severe Thunderstorm Warning	ABR	Dewey	65 min
Jun 26, 6:38 PM MDT	Tornado Warning	ABR	Corson, Dewey	37 min
Jun 26, 6:41 PM MDT	Severe Thunderstorm Warning	ABR	Corson, Dewey	64 min
Jun 26, 7:01 PM MDT	Severe Thunderstorm Warning	ABR	Corson	27 min
Jun 26, 7:15 PM MDT	Severe Thunderstorm Warning	ABR	Corson, Dewey	60 min
Jun 26, 7:21 PM MDT	Tornado Warning	ABR	Dewey	39 min
Jun 26, 7:23 PM MDT	Severe Thunderstorm Warning	ABR	Dewey	52 min
Jun 26, 7:27 PM MDT	Tornado Warning	ABR	Dewey	33 min
Jun 26, 7:56 PM MDT	Areal Flood Advisory	ABR	Dewey	6 hr
Jun 26, 7:56 PM MDT	Tornado Warning	ABR	Dewey, Potter	34 min
Jun 26, 8:00 PM MDT	Tornado Warning	ABR	Dewey	30 min
Jun 26, 8:14 PM MDT	Severe Thunderstorm Warning	ABR	Dewey	24 min
Jun 26, 8:16 PM MDT	Severe Thunderstorm Warning	ABR	Buffalo, Hughes, Hyde, Lyman	44 min
Jun 26, 8:18 PM MDT	Severe Thunderstorm Warning	ABR	Corson, Dewey, Potter, Walworth	12 min
Jun 26, 8:25 PM MDT	Tornado Warning	ABR	Dewey, Potter, Sully	50 min
Jun 26, 8:28 PM MDT	Severe Thunderstorm Warning	ABR	Dewey, Stanley, Sully	62 min
Jun 26, 8:31 PM MDT	Severe Thunderstorm Warning	ABR	Campbell, Corson	59 min
Jun 26, 8:48 PM MDT	Severe Thunderstorm Warning	ABR	Buffalo, Hand, Hyde	42 min
Jun 26, 8:52 PM MDT	Severe Thunderstorm Warning	ABR	Hughes, Jones, Lyman, Stanley	53 min
Jun 26, 9:14 PM MDT	Tornado Warning	ABR	Hyde, Sully	46 min
Jun 26, 9:27 PM MDT	Severe Thunderstorm Warning	ABR	Dewey, Stanley, Sully	63 min
Jun 26, 9:38 PM MDT	Severe Thunderstorm Warning	ABR	Hand, Hughes, Hyde, Sully	52 min
Jun 26, 9:46 PM MDT	Severe Thunderstorm Warning	ABR	Hughes, Lyman, Stanley	44 min
Jun 26, 9:59 PM MDT	Severe Thunderstorm Warning	ABR	Buffalo, Hand, Hughes, Hyde, Jones, Lyman and 2 more	46 min
Jun 26, 10:07 PM MDT	Severe Thunderstorm Warning	ABR	Faulk	23 min
Jun 26, 10:40 PM MDT	Severe Thunderstorm Warning	ABR	Hughes, Lyman, Stanley	29 min
Jun 27, 2:56 PM MDT	Severe Thunderstorm Warning	ABR	Brown, Day, Spink	34 min
Jun 27, 3:36 PM MDT	Severe Thunderstorm Warning	ABR	Clark, Hamlin	24 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2008 Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.