Alert archive / North Carolina / Wind Advisories in 2019

Wind Advisory 25, NWS Greenville-Spartanburg, SC

December 3, 20196 counties in North Carolina

NWS Greenville-Spartanburg, SC issued this wind advisory at Dec 3, 2019, 2:46 PM EST for 6 counties in North Carolina. It took effect at Dec 4, 2019, 12:00 PM EST. It was in force for 18 hr.

The area

The counties it named.

The facts

Issued
Dec 3, 2019, 2:46 PM EST (19:46 UTC)
In effect from
Dec 4, 2019, 12:00 PM EST
Expired
Dec 5, 2019, 6:00 AM EST
In force
18 hr
Issued by
NWS Greenville-Spartanburg, SC

Counties Avery County, NC, Burke County, NC, Caldwell County, NC, McDowell County, NC, Mitchell County, NC, Yancey County, NC

The radar

The Greer radar (KGSP), 115 km from the middle of the area, began a volume at 19:52 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 nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 7.8 hours before the alert went out and 185 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, Greensboro/Hi Pt, NC at 12:00Z on 2019-12-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 12:00Z on 2019-12-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 46 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1097 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
46 m²/s²
0-3 km storm-relative helicity
162 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

957 
WWUS72 KGSP 031946
NPWGSP

URGENT - WEATHER MESSAGE
National Weather Service Greenville-Spartanburg SC
246 PM EST Tue Dec 3 2019

NCZ033-049-050-501>506-040400-
/O.NEW.KGSP.WI.Y.0025.191204T1700Z-191205T1100Z/
Avery-Yancey-Mitchell-Caldwell Mountains-Greater Caldwell-
Burke Mountains-Greater Burke-McDowell Mountains-Eastern McDowell-
Including the cities of Ingalls, Banner Elk, Newland, Swiss, 
Burnsville, Celo, Micaville, Ramseytown, Busick, Spruce Pine, 
Poplar, Patterson, Kings Creek, Lenoir, Sawmills, Granite Falls, 
Jonas Ridge, Morganton, Pleasant Grove, Valdese, Ashford, 
Sugar Hill, Woodlawn, Old Fort, Marion, Nebo, Dysartsville, Fero,
and Glenwood
246 PM EST Tue Dec 3 2019

...WIND ADVISORY IN EFFECT FROM NOON WEDNESDAY TO 6 AM EST
THURSDAY...

* WHAT...Northwest winds 15 to 25 mph with gusts up to 50 mph 
  expected.

* WHERE...Avery, Yancey, Mitchell, Caldwell Mountains, Greater 
  Caldwell, Burke Mountains, Greater Burke, McDowell Mountains 
  and Eastern McDowell Counties.

* WHEN...From noon Wednesday to 6 AM EST Thursday.

* IMPACTS...Gusty winds could blow around unsecured objects. 
  Tree limbs could be blown down and a few power outages may 
  result.

* ADDITIONAL DETAILS...The strongest wind gusts are expected to
  occur at elevations above 3500 feet, and in particular the
  ridgetops and mountain peaks, late Wednesday afternoon and early
  Wednesday night.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

PM
5 follow-up statements
671 
WWUS72 KGSP 040312
NPWGSP

URGENT - WEATHER MESSAGE
National Weather Service Greenville-Spartanburg SC
1012 PM EST Tue Dec 3 2019

NCZ033-049-050-501>506-041100-
/O.CON.KGSP.WI.Y.0025.191204T1700Z-191205T1100Z/
Avery-Yancey-Mitchell-Caldwell Mountains-Greater Caldwell-
Burke Mountains-Greater Burke-McDowell Mountains-Eastern McDowell-
Including the cities of Ingalls, Banner Elk, Newland, Swiss, 
Burnsville, Celo, Micaville, Ramseytown, Busick, Spruce Pine, 
Poplar, Patterson, Kings Creek, Lenoir, Sawmills, Granite Falls, 
Jonas Ridge, Morganton, Pleasant Grove, Valdese, Ashford, 
Sugar Hill, Woodlawn, Old Fort, Marion, Nebo, Dysartsville, Fero,
and Glenwood
1012 PM EST Tue Dec 3 2019

...WIND ADVISORY REMAINS IN EFFECT FROM NOON WEDNESDAY TO 6 AM
EST THURSDAY...

* WHAT...Northwest winds 15 to 25 mph with gusts up to 50 mph 
  expected.

* WHERE...Avery, Yancey, Mitchell, Caldwell Mountains, Greater 
  Caldwell, Burke Mountains, Greater Burke, McDowell Mountains 
  and Eastern McDowell Counties.

* WHEN...From noon Wednesday to 6 AM EST Thursday.

* IMPACTS...Gusty winds could blow around unsecured objects. 
  Tree limbs could be blown down and a few power outages may 
  result.

* ADDITIONAL DETAILS...The strongest wind gusts are expected to
  occur at elevations above 3500 feet, and in particular the
  ridgetops and mountain peaks, late Wednesday afternoon to early 
  Wednesday night.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

RM/PM
141 
WWUS72 KGSP 041046
NPWGSP

URGENT - WEATHER MESSAGE
National Weather Service Greenville-Spartanburg SC
546 AM EST Wed Dec 4 2019

NCZ033-049-050-501>506-042100-
/O.CON.KGSP.WI.Y.0025.191204T1700Z-191205T1100Z/
Avery-Yancey-Mitchell-Caldwell Mountains-Greater Caldwell-
Burke Mountains-Greater Burke-McDowell Mountains-Eastern McDowell-
Including the cities of Ingalls, Banner Elk, Newland, Swiss, 
Burnsville, Celo, Micaville, Ramseytown, Busick, Spruce Pine, 
Poplar, Patterson, Kings Creek, Lenoir, Sawmills, Granite Falls, 
Jonas Ridge, Morganton, Pleasant Grove, Valdese, Ashford, 
Sugar Hill, Woodlawn, Old Fort, Marion, Nebo, Dysartsville, Fero,
and Glenwood
546 AM EST Wed Dec 4 2019

...WIND ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 6 AM EST
THURSDAY...

* WHAT...Northwest winds 25 to 35 mph with gusts up to 50 mph 
  expected.

* WHERE...Avery, Yancey, Mitchell, Caldwell Mountains, Greater 
  Caldwell, Burke Mountains, Greater Burke, McDowell Mountains 
  and Eastern McDowell Counties.

* WHEN...From noon Wednesday to 6 AM EST Thursday.

* IMPACTS...Gusty winds could blow around unsecured objects. 
  Tree limbs could be blown down and a few power outages may 
  result.

* ADDITIONAL DETAILS...The strongest wind gusts are expected to
  occur at elevations above 3500 feet, and in particular the
  ridgetops and mountain peaks, late Wednesday afternoon through
  early Thursday morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

JPT
337 
WWUS72 KGSP 041954
NPWGSP

URGENT - WEATHER MESSAGE
National Weather Service Greenville-Spartanburg SC
254 PM EST Wed Dec 4 2019

NCZ033-049-050-501>506-050400-
/O.CON.KGSP.WI.Y.0025.000000T0000Z-191205T1100Z/
Avery-Yancey-Mitchell-Caldwell Mountains-Greater Caldwell-
Burke Mountains-Greater Burke-McDowell Mountains-Eastern McDowell-
Including the cities of Ingalls, Banner Elk, Newland, Swiss, 
Burnsville, Celo, Micaville, Ramseytown, Busick, Spruce Pine, 
Poplar, Patterson, Kings Creek, Lenoir, Sawmills, Granite Falls, 
Jonas Ridge, Morganton, Pleasant Grove, Valdese, Ashford, 
Sugar Hill, Woodlawn, Old Fort, Marion, Nebo, Dysartsville, Fero,
and Glenwood
254 PM EST Wed Dec 4 2019

...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 AM EST THURSDAY...

* WHAT...West winds 25 to 35 mph with gusts up to 50 mph.

* WHERE...Caldwell Mountains, Greater Caldwell, Burke Mountains, 
  Greater Burke, McDowell Mountains, Eastern McDowell, Avery, 
  Mitchell and Yancey Counties.

* WHEN...Until 6 AM EST Thursday.

* IMPACTS...Gusty winds could blow around unsecured objects. 
  Tree limbs could be blown down and a few power outages may 
  result.

* ADDITIONAL DETAILS...Winds will increase dramatically at the
  high elevations beginning around sunset. Some of the mountain
  peaks and ridgetops above 5000 feet could have a few wind gusts
  above 60 mph. The strongest winds are expected to occur this
  evening. The wind should begin to taper off in the pre-dawn
  hours Thursday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

PM
921 
WWUS72 KGSP 050326
NPWGSP

URGENT - WEATHER MESSAGE
National Weather Service Greenville-Spartanburg SC
1026 PM EST Wed Dec 4 2019

NCZ033-049-050-501>506-051100-
/O.CON.KGSP.WI.Y.0025.000000T0000Z-191205T1100Z/
Avery-Yancey-Mitchell-Caldwell Mountains-Greater Caldwell-
Burke Mountains-Greater Burke-McDowell Mountains-Eastern McDowell-
Including the cities of Ingalls, Banner Elk, Newland, Swiss, 
Burnsville, Celo, Micaville, Ramseytown, Busick, Spruce Pine, 
Poplar, Patterson, Kings Creek, Lenoir, Sawmills, Granite Falls, 
Jonas Ridge, Morganton, Pleasant Grove, Valdese, Ashford, 
Sugar Hill, Woodlawn, Old Fort, Marion, Nebo, Dysartsville, Fero,
and Glenwood
1026 PM EST Wed Dec 4 2019

...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 AM EST THURSDAY...

* WHAT...West winds 25 to 35 mph with gusts up to 50 mph.

* WHERE...Caldwell Mountains, Greater Caldwell, Burke Mountains, 
  Greater Burke, McDowell Mountains, Eastern McDowell, Avery, 
  Mitchell and Yancey Counties.

* WHEN...Until 6 AM EST Thursday.

* IMPACTS...Gusty winds could blow around unsecured objects. 
  Tree limbs could be blown down and a few power outages may 
  result.

* ADDITIONAL DETAILS...Some of the mountain peaks and ridgetops
  above 5000 feet could have a few wind gusts above 60 mph. The
  wind should begin to taper off in the pre-dawn hours Thursday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$
573 
WWUS72 KGSP 051049
NPWGSP

URGENT - WEATHER MESSAGE
National Weather Service Greenville-Spartanburg SC
549 AM EST Thu Dec 5 2019

NCZ033-049-050-501>506-051200-
/O.EXP.KGSP.WI.Y.0025.000000T0000Z-191205T1100Z/
Avery-Yancey-Mitchell-Caldwell Mountains-Greater Caldwell-
Burke Mountains-Greater Burke-McDowell Mountains-Eastern McDowell-
Including the cities of Ingalls, Banner Elk, Newland, Swiss, 
Burnsville, Celo, Micaville, Ramseytown, Busick, Spruce Pine, 
Poplar, Patterson, Kings Creek, Lenoir, Sawmills, Granite Falls, 
Jonas Ridge, Morganton, Pleasant Grove, Valdese, Ashford, 
Sugar Hill, Woodlawn, Old Fort, Marion, Nebo, Dysartsville, Fero,
and Glenwood
549 AM EST Thu Dec 5 2019

...WIND ADVISORY WILL EXPIRE AT 6 AM EST EARLY THIS MORNING...

Wind gusts have diminished across the area this morning.

$$

JPT

What forecasters said that day

The local office's own words before this wind advisory 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 wind advisory went out at Dec 3, 12:32 PM EST, 2 hours 14 minutes earlier.

Area forecast discussion, Dec 3, 12:32 PM EST, 2 hours 14 minutes before
Area Forecast Discussion
National Weather Service Greenville-Spartanburg SC
1232 PM EST Tue Dec 3 2019

.SYNOPSIS...
Northwest flow and associated upslope moisture will diminish today
through tonight. Northwest winds will then strengthen once again
Wednesday through Wednesday night behind a trough of low pressure
moving off the East Coast. Weak surface high pressure will briefly
return on Thursday before another low pressure system approaches
from the Deep South or Gulf Coast region on Friday, along with a
quick shot of moisture. Dry high pressure is expected for Saturday,
but with moisture gradually returning late in the weekend, and
conditions becoming quite unsettled early next week.

&&

.NEAR TERM /THROUGH TONIGHT/...
As of 1228 PM Tuesday: Just some high thin cirrus moving overhead
for the afternoon. Temp trends will be adjusted for obs. Fcst in
relatively good shape.

Otherwise, the deep upper low will continue to lift NE and off
the New England Coast today and tonight. As it does, heights will
rise and the pattern will flatten over the fcst area as a short
wave ridge moves overhead. This will be brief, however, as another
upper trof digs down over the Great Lakes and towards our area by
early Wednesday. At the sfc, the low off the New England Coast will
eventually drift farther north and east and off the coast of Nova
Scotia. Profiles will continue to dry out over our area as broad
high pressure gradually slides into the region from the west and
weak lee troffing sets up over the CWFA during the afternoon. This
will cause low-lvl winds to back to a more SWLY direction, except
for the higher terrain, where they should remain predominately
NWLY. High temps are expected to remain in the low 50s again today
across the lower terrain, but should be about a category warmer
(compared to yesterday) across the higher terrain. Lows tomorrow
morning will be a few degrees warmer than this morning, but still
just below climatology.

&&

.SHORT TERM /WEDNESDAY THROUGH THURSDAY/...
As of 220 AM EST Tuesday: With a stout upper jet arriving in the
northwest flow on Wednesday, and continued upslope flow at lower
levels, some mountain wave cirrus could form along and east of the
Blue Ridge. Also, anticipate the return of a tightening pressure
gradient and stronger associated northwest flow over the high
terrain on Wednesday. The 850 mb winds could reach 45 to 50 kt at
times along the northern Blue Ridge late in the day. An HWO mention
for the northern tier could be warranted for possible Wind Advisory
conditions Wed/Wed night.

Zonal flow will set up over the area on Thursday, with a shallow
ridge at lower levels. Winds will slacken as the pressure gradient
weakens, and temperatures should warm to at least a category
above climo throughout.

&&

.LONG TERM /THURSDAY NIGHT THROUGH MONDAY/...
As of 230 AM EST Tuesday: A southern stream open wave will move from
the lower MS River Valley to the southern Appalachians on Friday,
and then quickly exit off the southeast coast Friday night. A modest
amount of returning moisture associated with this system may briefly
intersect lingering cold air across the mountains Friday morning,
but not sufficiently to produce any accumulating snow showers,
especially with low levels slow to moisten up while any near-
freezing mountain temperatures are still in place. The transitory
moisture on Friday never gets terribly deep, but forcing ahead of
the wave should be sufficient to warrant chance PoPs for daytime
Friday in most areas. Temperatures should cool a few degrees from
Thursday given the clouds and possibly light rain.

Dry high pressure, but with chillier thicknesses, will set up over
the region on Saturday. Heights falling again to the west will then
permit moisture to return to the southern Appalachians late Sunday
through Sunday night. Uncertainty increases quickly on the extent of
any deeper height falls back across the central CONUS early next
week, but a period of rather unsettled weather could get ushered
into the area starting early in the week, with some heavy rain
becoming possible, at some point.

&&

.AVIATION /18Z TUESDAY THROUGH SUNDAY/...
At KCLT and elsewhere: VFR through the period, with only some high
clouds to contend with this afternoon and tonight. Wind direction
will be a bit tricky through the afternoon at KCLT as a lee
trof sets up, and there might be occasional gusts at some of the
sites. Wind should go light SW after sunset. The wind should pick
up during Wednesday morning as the pressure gradient increases,
resulting in gusty NW winds at least at KAVL, possibly at other
sites Wednesday afternoon. At KAVL, there could be a time period
around daybreak with a low level wind shear, but that will end
with deeper mixing after 15Z.

Outlook: Mostly dry/VFR conditions are expected thru Thursday. A
weakening low pressure system may bring light precip and brief
restrictions on Friday.

Confidence Table...

            17-23Z        23-05Z        05-11Z        11-12Z
KCLT       High 100%     High 100%     High 100%     High 100%
KGSP       High 100%     High 100%     High 100%     High 100%
KAVL       High 100%     High 100%     High 100%     High 100%
KHKY       High 100%     High 100%     High 100%     High 100%
KGMU       High 100%     High 100%     High 100%     High 100%
KAND       High 100%     High 100%     High 100%     High 100%

The percentage reflects the number of guidance members agreeing
with the scheduled TAF issuance flight rule category. Complete hourly
experimental aviation forecast consistency tables and ensemble forecasts
are available at the following link:

www.weather.gov/gsp/aviation

&&

.GSP WATCHES/WARNINGS/ADVISORIES...
GA...None.
NC...None.
SC...None.

&&

SYNOPSIS...HG
NEAR TERM...JPT/PM
SHORT TERM...HG
LONG TERM...HG
AVIATION...PM
Hazardous weather outlook, Dec 3, 6:49 AM EST, 7 hours 57 minutes before
Hazardous Weather Outlook
National Weather Service Greenville-Spartanburg SC
649 AM EST Tue Dec 3 2019

NCZ033-049-050-501-503-505-041200-
Avery-Yancey-Mitchell-Caldwell Mountains-Burke Mountains-
McDowell Mountains-
649 AM EST Tue Dec 3 2019

This Hazardous Weather Outlook is for the northern mountains of
western North Carolina.

.DAY ONE...Today and tonight.

Hazardous weather is not expected at this time.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Gusty northwest winds will develop once again Wednesday through
Wednesday night. Northwest winds of 20 to 30 mph may gust to between
40 and 50 mph at times. A Wind Advisory could be needed for areas
around the northern Blue Ridge Mountains.

.SPOTTER INFORMATION STATEMENT...

None.

GAZ010-017-018-026-028-029-NCZ035>037-048-051>053-056>059-062>065-
068>072-082-502-504-506>510-SCZ001>014-019-041200-
Rabun-Habersham-Stephens-Franklin-Hart-Elbert-Alexander-Iredell-
Davie-Madison-Swain-Haywood-Buncombe-Catawba-Rowan-Graham-
Northern Jackson-Macon-Southern Jackson-Transylvania-Henderson-
Cleveland-Lincoln-Gaston-Mecklenburg-Cabarrus-Union-Greater Caldwell-
Greater Burke-Eastern McDowell-Rutherford Mountains-
Greater Rutherford-Polk Mountains-Eastern Polk-Oconee Mountains-
Pickens Mountains-Greenville Mountains-Greater Oconee-
Greater Pickens-Greater Greenville-Spartanburg-Cherokee-York-
Anderson-Abbeville-Laurens-Chester-Greenwood-
649 AM EST Tue Dec 3 2019

This Hazardous Weather Outlook is for northeast Georgia, Piedmont
North Carolina, western North Carolina, and Upstate South Carolina.

.DAY ONE...Today and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

None.

HG

In the hours before

Local storm report, Dec 3, 8:50 AM EST, 5 hours 56 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
850 AM EST TUE DEC 03 2019

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

0400 PM     SNOW             11 NNW CHEROKEE         35.61N  83.43W
12/02/2019  E2.0 INCH        SWAIN              NC   PARK/FOREST SRVC

            AROUND 2 INCHES OF SNOW REPORTED BY LATE DEC 2 AT
            NEWFOUND GAP. HIGHWAY 441 IS VERY ICY LEADING UP TO THE
            GAP.

&&

OUTLAW
Local storm report, Dec 3, 9:11 AM EST, 5 hours 35 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
911 AM EST TUE DEC 03 2019

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

0600 PM     SNOW             5 N FINES CREEK         35.75N  82.96W
12/02/2019  M3.2 INCH        HAYWOOD            NC   PUBLIC

            AT ELEVATION 4000 FEET...3.25 INCHES OF SNOW FROM
            TAKING AN AVERAGE BETWEEN THE WIND BLOWN DRIFTS.

&&

OUTLAW
Local storm report, Dec 3, 9:21 AM EST, 5 hours 25 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
921 AM EST TUE DEC 03 2019

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

0500 PM     SNOW             WOLF LAUREL             35.96N  82.51W
12/02/2019  E3.0 INCH        MADISON            NC   PUBLIC

            ELEVATION 3710 FEET AT WOLF LAUREL.

&&

OUTLAW
Local storm report, Dec 3, 9:38 AM EST, 5 hours 8 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
938 AM EST TUE DEC 03 2019

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

0935 AM     SNOW             BULADEAN                36.11N  82.19W
12/03/2019  E1.0 INCH        MITCHELL           NC   PUBLIC

            ONLY ABOUT AN INCH OF SNOW.

&&

OUTLAW

Nearby

Wind Advisories in North Carolina, 2019Every wind advisory in 2019

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.