Alert archive / South Carolina / Tornado Warnings in 2020
Tornado Warning 41, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this tornado warning at Apr 25, 2020, 9:40 PM EDT for Cherokee County, Spartanburg County, Union County, South Carolina. It was in force for 35 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
- Apr 25, 2020, 9:40 PM EDT (01:40 UTC)
- Expired
- Apr 25, 2020, 10:15 PM EDT
- In force
- 35 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.0 in
Counties Cherokee County, SC, Spartanburg County, SC, Union County, SC
The radar
The Greer radar (KGSP), 26 km from the middle of the area, began a volume at 01:42 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 tornado 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 |
|---|---|---|---|
| Apr 25, 6:11 PM EDT | Tornado Watch | SPC | 4 hr |
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 1.7 hours before the alert went out and 225 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
- 7 J/kg
- Mixed-layer CIN
- -73 J/kg
- Mixed-layer LCL
- 584 m above ground
- 0-6 km bulk shear
- 68 kt
- 0-1 km storm-relative helicity
- 204 m²/s²
- 0-3 km storm-relative helicity
- 339 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
669
WFUS52 KGSP 260140
TORGSP
SCC021-083-087-260215-
/O.NEW.KGSP.TO.W.0041.200426T0140Z-200426T0215Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Greenville-Spartanburg SC
940 PM EDT Sat Apr 25 2020
The National Weather Service in Greenville-Spartanburg has issued a
* Tornado Warning for...
Central Spartanburg County in Upstate South Carolina...
Western Cherokee County in Upstate South Carolina...
North central Union County in Upstate South Carolina...
* Until 1015 PM EDT.
* At 940 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Spartanburg, or near Roebuck, moving east at 45
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...
Croft State Park around 950 PM EDT.
Pacolet, Pacolet Mills and Cowpens around 1000 PM EDT.
Other locations impacted by this dangerous thunderstorm include
Thicketty.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
Please report damaging winds, hail, or flooding to the National
Weather Service Greenville-Spartanburg by calling toll free, 1, 800,
2 6 7, 8 1 0 1, or by posting on our Facebook page, or Tweet it using
hashtag nwsgsp. Your message should describe the event and the
specific location where it occurred.
&&
LAT...LON 3486 8206 3491 8214 3500 8212 3511 8170
3486 8160
TIME...MOT...LOC 0140Z 261DEG 38KT 3491 8198
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
MOORE1 follow-up statement
529
WWUS52 KGSP 260158
SVSGSP
Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
958 PM EDT Sat Apr 25 2020
SCC021-083-087-260215-
/O.CON.KGSP.TO.W.0041.000000T0000Z-200426T0215Z/
Spartanburg SC-Cherokee SC-Union SC-
958 PM EDT Sat Apr 25 2020
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1015 PM EDT FOR
NORTHEASTERN SPARTANBURG...WESTERN CHEROKEE AND NORTH CENTRAL UNION
COUNTIES...
At 958 PM EDT, a severe thunderstorm capable of producing a tornado
was located 10 miles east of Spartanburg, or near Pacolet Mills,
moving east at 45 mph.
HAZARD...Tornado and quarter size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will remain over mainly rural areas of
northeastern Spartanburg, western Cherokee and north central Union
Counties, including the following locations... Thicketty.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
Please report damaging winds, hail, or flooding to the National
Weather Service Greenville-Spartanburg by calling toll free, 1, 800,
2 6 7, 8 1 0 1, or by posting on our Facebook page, or Tweet it using
hashtag nwsgsp. Your message should describe the event and the
specific location where it occurred.
&&
LAT...LON 3487 8182 3494 8190 3504 8192 3511 8170
3486 8160
TIME...MOT...LOC 0158Z 261DEG 38KT 3494 8175
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
MOOREWhat forecasters said that day
The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Greenville-Spartanburg, SC wrote its last area forecast discussion before this tornado warning went out at Apr 25, 8:32 PM EDT, 1 hour 8 minutes earlier.
Area forecast discussion, Apr 25, 8:32 PM EDT, 1 hour 8 minutes before
Area Forecast Discussion
National Weather Service Greenville-Spartanburg SC
832 PM EDT Sat Apr 25 2020
.SYNOPSIS...
A compact but energetic storm system will move from Kentucky to
Pennsylvania tonight into Sunday as its showers and thunderstorms
eventually exit our region. Seasonably cool conditions are expected
behind this system with the next shot at widespread rain arriving by
the middle of the week.
&&
.NEAR TERM /THROUGH SUNDAY/...
As of 825 PM: Supercells lined up just south of the NC border have
mostly been associated with large hail. They will be moving into
slightly less unstable air, although they are riding more or less
along the warm front, and we continue to monitor for development
of tornadoes. Shear/helicity will stay about the same as the cells
work east, and LCLs appear to lower, so the tornado threat will
persist for some time, though hail potential may diminish a bit.
Convection should clear our area by midnight to 1 AM, though some
NW flow and wrap-around moisture will enhance shower activity in
the mountains near daybreak tomorrow. Some moisture may even break
containment, with showers possible across the majority of the NC
mountains tomorrow, not just the TN/NC border. Though no accums
are forecast at the current time, temperatures will drop enough
tomorrow as upper heights drop that some light snow may be possible
at elevations above 5000ft. the other story across the area will
be wind - stout NW flow will encourage gusts up to 25+ mph outside
the mountains, and up to 35+ mph in the mountains. Temperatures
will be below average.
&&
.SHORT TERM /SUNDAY NIGHT THROUGH TUESDAY/...
As of 215 PM Saturday: An upper trough axis crosses the area Sunday
night then moves east through the rest of the short term with slowly
rising heights as an upper ridge axis moves in by Tuesday. Deep NW
flow, short waves, and upper divergence will act on lingering
moisture over the mountains to keep showers there Sunday night.
Temps may be cold enough for some very high elevation snow, but p-
type will be rain for the vast majority. gusty NW wind will remain
over the area Sunday night into Monday. Gusts as high as 40 mph will
be possible across the higher elevations with gusts to 30 mph
possible elsewhere. A weak clipper-type system approaches from the
NW on Tuesday but weakens as it moves toward the area. Have kept the
forecast dry for now. Temps will be a few degrees below normal
Sunday and Monday nights and on Monday then warm a few degrees above
normal for Tuesday.
&&
.LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/...
As of 225 PM Saturday: An upper low moving across the Great Lakes
will swing a strong short wave trough across our area Wednesday and
Wednesday night. The associated cold front moves in during the same
time frame. There will be good forcing and deep moisture, but only
weak instability. Guidance is in good agreement on timing and PoP
has increased to high likely and categorical on Wednesday with
likely PoP Wednesday night. Agree with previous shift that since
it's late April and still 5 days out, we won't rule out anything in
terms of the severe convective potential at this point, but
hazardous weather is not looking like a slam dunk either. There will
be some lingering NW flow rain showers Thursday and possibly Friday
then dry on Saturday.
Near normal temps Wednesday drop a few degrees Thursday, then back
to near normal Friday and above normal on Saturday.
&&
.AVIATION /01Z SUNDAY THROUGH THURSDAY/...
At KCLT: Primary concern is series of supercells on track to pass
near the field later this evening. Large hail is the primary concern
but damaging winds or even a tornado cannot be ruled out. The
trailing cells likely will begin to struggle with loss of heating
and as they ingest rain cooled air from the first cells. Leading
cell expected to make nearest pass around 0145-0215z and threat
will continue until around 0345-0415z. MVFR to IFR vsby and MVFR
cig expected.
Otherwise: Timing of TSRA TEMPOs this evening based on meso
model projections and radar trends, where necessary. Cold front
will sweep through later this evening. Given onset of drier air
and mixing, daybreak restrictions appear unlikely. Shortwave
trough passing overhead tomorrow, along with midlevel inversion,
should result in areas of MVFR to low VFR stratocu that will cause
occasional cigs. Winds will become NW tonight at KAVL but remain
SW elsewhere. Frequent gusts of 20-30 kt are likely much of the
day Sunday.
Outlook: Generally VFR conditions will prevail through Tuesday
before another storm system brings rain chances and restrictions
back on Wednesday.
Confidence Table...
00-06Z 06-12Z 12-18Z 18-00Z
KCLT Med 74% High 99% High 85% High 100%
KGSP High 98% High 100% High 81% Med 79%
KAVL High 81% High 85% Med 72% Med 66%
KHKY Med 78% Med 66% High 82% High 100%
KGMU High 99% High 100% High 81% Med 73%
KAND High 100% High 100% High 80% High 93%
The percentage reflects the number of guidance members agreeing
with the scheduled TAF issuance flight rule category. Complete hourly
experimental aviation forecast consistency tables are available at
the following link:
www.weather.gov/gsp/aviation
&&
.GSP WATCHES/WARNINGS/ADVISORIES...
GA...None.
NC...None.
SC...None.
&&
SYNOPSIS...DEO
NEAR TERM...17/08
SHORT TERM...RWH
LONG TERM...RWH
AVIATION...08Hazardous weather outlook, Apr 25, 6:17 PM EDT, 3 hours 23 minutes before
Hazardous Weather Outlook National Weather Service Greenville-Spartanburg SC 617 PM EDT Sat Apr 25 2020 GAZ010-017-018-NCZ051-052-058-059-062>065-509-510-SCZ001>008-010-012- 013-262230- Rabun-Habersham-Stephens-Swain-Haywood-Graham-Northern Jackson-Macon- Southern Jackson-Transylvania-Henderson-Polk Mountains-Eastern Polk- Oconee Mountains-Pickens Mountains-Greenville Mountains- Greater Oconee-Greater Pickens-Greater Greenville-Spartanburg- Cherokee-Anderson-Laurens-Union SC- 617 PM EDT Sat Apr 25 2020 ...TORNADO WATCH 148 IN EFFECT UNTIL 10 PM EDT THIS EVENING... This Hazardous Weather Outlook is for northeast Georgia, western North Carolina and upstate South Carolina. .DAY ONE...Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Tornado Watch. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Hazardous weather is not expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed. Please relay any information about observed severe weather to the NWS while following all local, state, and CDC guidelines. GAZ026-028-029-NCZ033-035>037-048>050-053-056-057-068>072-082- 501>508-SCZ009-011-014-019-262230- Franklin-Hart-Elbert-Avery-Alexander-Iredell-Davie-Madison-Yancey- Mitchell-Buncombe-Catawba-Rowan-Cleveland-Lincoln-Gaston-Mecklenburg- Cabarrus-Union NC-Caldwell Mountains-Greater Caldwell- Burke Mountains-Greater Burke-McDowell Mountains-Eastern McDowell- Rutherford Mountains-Greater Rutherford-York-Abbeville-Chester- Greenwood- 617 PM EDT Sat Apr 25 2020 This Hazardous Weather Outlook is for northeast Georgia, piedmont North Carolina, western North Carolina and upstate South Carolina. .DAY ONE...Tonight. Scattered thunderstorms are expected to develop across the area along and ahead of a cold front from late this afternoon through the evening. A few of these storms will have the potential to produce severe weather, primarily in the form of damaging wind gusts and large hail. However, an isolated tornado cannot be ruled out. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Hazardous weather is not expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed. Please relay any information about observed severe weather to the NWS while following all local, state, and CDC guidelines.
In the hours before
Special weather statement, Apr 25, 5:33 PM EDT, 4 hours 7 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
533 PM EDT Sat Apr 25 2020
GAZ010-017-252200-
Rabun GA-Habersham GA-
533 PM EDT Sat Apr 25 2020
...A STRONG THUNDERSTORM WILL IMPACT NORTHERN HABERSHAM AND WESTERN
RABUN COUNTIES UNTIL 600 PM EDT...
At 532 PM EDT, Doppler radar was tracking a strong thunderstorm 7
miles north of Clarkesville, moving northeast at 20 mph.
Locations to be impacted include...
Clayton, Tiger, Tallulah Falls, Lake Rabun, Lake Burton, Lakemont,
Tallulah Gorge State Park, Black Rock Mountain State Park, Batesville
and Seed Lake.
Wind gusts up to 40 mph and pea size hail will be possible in these
areas.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This storm may intensify, so be certain to monitor local radio and tv
stations, as well as local cable tv outlets for additional
information and possible warnings from the National Weather Service.
Lake Rabun and Lake Burton are in the path of this storm. Cloud to
ground lightning and gusty winds will create dangerous boating
conditions. Move to shore immediately.
&&
LAT...LON 3482 8365 3484 8366 3488 8366 3490 8363
3491 8363 3492 8360 3494 8360 3495 8355
3499 8355 3482 8330 3472 8336 3464 8359
3468 8365 3471 8364 3473 8362 3476 8363
3480 8368
TIME...MOT...LOC 2132Z 225DEG 19KT 3471 8357
MOORESpecial weather statement, Apr 25, 6:33 PM EDT, 3 hours 7 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
633 PM EDT Sat Apr 25 2020
GAZ010-NCZ062-252300-
Rabun GA-Macon NC-
633 PM EDT Sat Apr 25 2020
...A STRONG THUNDERSTORM WILL IMPACT RABUN AND SOUTH CENTRAL MACON
COUNTIES UNTIL 700 PM EDT...
At 633 PM EDT, Doppler radar was tracking a strong thunderstorm 6
miles west of Clayton, or near Lake Burton, moving northeast at 35
mph.
Locations to be impacted include...
Clayton, Mountain City, Tiger, Dillard, Sky Valley, Lake Burton,
Lakemont, Black Rock Mountain State Park, Lake Rabun and Otto.
Wind gusts up to 40 mph and pea size hail will be possible in these
areas.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This storm may intensify, so be certain to monitor local radio and tv
stations, as well as local cable tv outlets for additional
information and possible warnings from the National Weather Service.
&&
A Tornado Watch remains in effect until 1000 PM EDT for northeastern
Georgia...western North Carolina...and Upstate South Carolina.
LAT...LON 3487 8365 3511 8334 3495 8313 3488 8321
3488 8324 3487 8324 3486 8325 3485 8327
3479 8333 3475 8353 3478 8356 3479 8356
3480 8358 3482 8359 3483 8361
TIME...MOT...LOC 2233Z 233DEG 30KT 3485 8351
MOORELocal storm report, Apr 25, 6:40 PM EDT, 3 hours before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
640 PM EDT SAT APR 25 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0549 PM HAIL 1 W LAKEMONT 34.78N 83.44W
04/25/2020 E1.00 INCH RABUN GA TRAINED SPOTTER
&&
LACORTESpecial weather statement, Apr 25, 6:51 PM EDT, 2 hours 49 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
651 PM EDT Sat Apr 25 2020
NCZ062-252315-
Macon NC-
651 PM EDT Sat Apr 25 2020
...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN MACON COUNTY UNTIL
715 PM EDT...
At 651 PM EDT, Doppler radar was tracking a strong thunderstorm 10
miles east of Andrews, or near Nantahala Lake, moving northeast at 25
mph.
Locations to be impacted include...
Nantahala Lake, Burningtown, Kyle, Wayah Bald, Aquone, Cowee and
Rainbow Springs.
Wind gusts up to 40 mph and pea size hail will be possible in these
areas.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This storm may intensify, so be certain to monitor local radio and tv
stations, as well as local cable tv outlets for additional
information and possible warnings from the National Weather Service.
&&
A Tornado Watch remains in effect until 1000 PM EDT for western North
Carolina.
LAT...LON 3519 8371 3520 8373 3523 8369 3525 8370
3528 8367 3530 8346 3532 8345 3533 8334
3517 8345 3508 8358 3511 8362 3513 8362
3512 8364 3514 8364 3514 8365 3515 8365
3516 8366 3515 8373 3515 8374
TIME...MOT...LOC 2251Z 229DEG 20KT 3517 8365
MOORESpecial weather statement, Apr 25, 8:08 PM EDT, 1 hour 32 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
808 PM EDT Sat Apr 25 2020
NCZ048-049-053-505-260045-
Buncombe NC-McDowell Mountains NC-Yancey NC-Madison NC-
808 PM EDT Sat Apr 25 2020
...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN MCDOWELL...
SOUTHEASTERN MADISON...CENTRAL BUNCOMBE AND SOUTHERN YANCEY COUNTIES
UNTIL 845 PM EDT...
At 808 PM EDT, Doppler radar was tracking a strong thunderstorm 5
miles northwest of Downtown Asheville, or near Woodfin, moving east
at 40 mph.
Locations to be impacted include...
Downtown Asheville, Burnsville, Marshall, East Asheville, West
Asheville, North Asheville, Black Mountain, Woodfin, Swannanoa and
Weaverville.
Wind gusts up to 45 mph and pea size hail will be possible in these
areas.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This storm may intensify, so be certain to monitor local radio and tv
stations, as well as local cable tv outlets for additional
information and possible warnings from the National Weather Service.
&&
LAT...LON 3561 8273 3580 8272 3594 8224 3561 8213
3556 8260
TIME...MOT...LOC 0008Z 257DEG 35KT 3567 8259
MOORESpecial weather statement, Apr 25, 8:59 PM EDT, 41 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
859 PM EDT Sat Apr 25 2020
NCZ501>505-260130-
McDowell Mountains NC-Caldwell Mountains NC-Burke Mountains NC-
Greater Burke NC-Greater Caldwell NC-
859 PM EDT Sat Apr 25 2020
...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN MCDOWELL...
SOUTHWESTERN CALDWELL AND NORTHWESTERN BURKE COUNTIES UNTIL 930 PM
EDT...
At 859 PM EDT, Doppler radar was tracking a strong thunderstorm 9
miles northeast of Marion, or 4 miles north of Lake James, moving
east at 35 mph.
Locations to be impacted include...
Morganton, Glen Alpine, Table Rock, Drexel, Lake James, Lake James
State Park, North Cove, Collettsville, Ashford and Oak Hill.
Wind gusts up to 50 mph and nickel size hail will be possible in
these areas.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This storm may intensify, so be certain to monitor local radio and tv
stations, as well as local cable tv outlets for additional
information and possible warnings from the National Weather Service.
&&
LAT...LON 3572 8161 3573 8188 3577 8193 3573 8200
3588 8203 3588 8201 3587 8200 3589 8198
3590 8198 3599 8165
TIME...MOT...LOC 0059Z 256DEG 31KT 3580 8192
12The office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 25, 8:03 PM EDT | Severe Thunderstorm Warning | GSP | Cherokee, Spartanburg | 42 min |
| Apr 25, 8:07 PM EDT | Severe Thunderstorm Warning | GSP | Greenville, Pickens | 38 min |
| Apr 25, 8:15 PM EDT | Severe Thunderstorm Warning | GSP | Oconee, Pickens | 45 min |
| Apr 25, 8:24 PM EDT | Tornado Warning | GSP | Greenville, Spartanburg | 36 min |
| Apr 25, 8:36 PM EDT | Tornado Warning | GSP | Pickens | 24 min |
| Apr 25, 8:40 PM EDT | Tornado Warning | GSP | Cherokee, York | 35 min |
| Apr 25, 8:53 PM EDT | Severe Thunderstorm Warning | GSP | Cherokee, Spartanburg | 37 min |
| Apr 25, 9:00 PM EDT | Severe Thunderstorm Warning | GSP | Greenville, Pickens | 30 min |
| Apr 25, 9:11 PM EDT | Tornado Warning | GSP | Greenville, Spartanburg | 34 min |
| Apr 25, 9:14 PM EDT | Tornado Warning | GSP | York | 31 min |
| Apr 25, 9:20 PM EDT | Severe Thunderstorm Warning | GSP | Cherokee, York | 40 min |
| Apr 25, 9:44 PM EDT | Tornado Warning | GSP | Cherokee, York | 31 min |
| Apr 25, 10:06 PM EDT | Tornado Warning | GSP | York | 24 min |
| Apr 25, 10:07 PM EDT | Tornado Warning | GSP | Cherokee, Union, York | 38 min |
| Apr 25, 10:33 PM EDT | Tornado Warning | GSP | York | 27 min |
| Apr 25, 10:59 PM EDT | Severe Thunderstorm Warning | GSP | York | 46 min |
Nearby
Tornado Warnings in South Carolina, 2020Every tornado warning in 2020Tornadoes in 2020
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.