Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 260, NWS Norman, OK

May 10, 2017Garvin County, McClain County, Stephens County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at May 10, 2017, 10:36 PM CDT for Garvin County, McClain County, Stephens County, Oklahoma. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 10, 2017, 10:36 PM CDT (03:36 UTC)
Expired: May 10, 2017, 11:15 PM CDT
In force: 39 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Garvin County, OK, McClain County, OK, Stephens County, OK

The radar

The Norman radar (KTLX), 71 km from the middle of the area, began a volume at 03:39 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

Norman, OK (KOUN), launched 00:00Z, 3.6 hours before the alert went out and 55 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: 1639 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 514 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 175 m²/s²
0-3 km storm-relative helicity: 136 m²/s²
Significant tornado parameter: 1.5
Supercell composite: 5.6

Open this sounding in Storm Lab

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 Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at May 10, 6:56 PM CDT, 3 hours 40 minutes earlier.

Area forecast discussion, May 10, 6:56 PM CDT, 3 hours 40 minutes before

Area Forecast Discussion
National Weather Service Norman OK
656 PM CDT Wed May 10 2017

.DISCUSSION...
Severe thunderstorm and heavy rainfall potential continues
this evening mainly across southwestern Oklahoma.

Latest radars as of 650 pm depicted numerous showers and
thunderstorms near an old outflow boundary from Quanah Texas to
Altus to Fort Cobb. Think storms will continue near this boundary.
Some storms will likely be severe with large hail and damaging
winds as the main hazard. Training of storms may lead to heavy
rainfall of 1 to 3 inches and localized flooding as well as the
air is moist (precipitable water values 1.2-1.7", well above
average for this time of year).

These storms will move into the Oklahoma City metro area between
730 pm and midnight, but overall, are expected to weaken as the
air is cooler and more stable across central Oklahoma (MLCAPE
500-1500 J/kg) compared to southwestern Oklahoma and western north
Texas (MLCAPE 1500-2500 J/kg). Still cannot rule out some severe
hail and wind reports as well as heavy rainfall and localized
flooding.

Northwest of the outflow boundary appears to have a lower severe
potential tonight due to cooler and more stable air in place.
Southeast of the outflow boundary may remain too capped for storm
development this evening.

It appears the threat for tornadoes may be decreasing in many
areas this evening. Latest storms appear mainly be northwest and
located on the cooler side of the outflow boundary. Low level
shear will be increasing over the next few hours however, so will
continue to monitor, especially near the Lawton, Wichita Falls,
and Vernon areas where the latest STP values were 2 to 3.

Products will be updated shortly.

Aviation discussion for the 00 UTC TAFs is below as well.

MBS

&&

.AVIATION...
Have very low confidence in the TAFs.

ISO-NUM TSRA will affect locations near KLTS-KOKC before 06 UTC
and bring brief MVFR conditions as well as variable strong winds.

Additional SHRA/TSRA may affect other sites as well and continue
anytime now through Thursday night, but pinpointing when and where
activity occurs remains very challenging.

Widespread MVFR and lower conditions may form anywhere north of
KLTS-KOUN before 18 UTC. Most places are expected to be MVFR or
VFR after 18 UTC.

A surface wind shift to the north will occur at many sites 09-22
UTC as a cold front moves south.

MBS

&&

.PREV DISCUSSION... /issued 155 PM CDT Wed May 10 2017/

DISCUSSION...
Main focus is this afternoon and evening with potential for severe
thunderstorms. Latest observations show an outflow from morning
convection oriented east-northeast to west-southwest across the
area, roughly from just south of Ponca City to near Kingfisher to
just north of Hobart and Altus. North of the boundary, convection
has been persistent.

Latest water vapor band imagery shows deep closed low over central
New Mexico early this afternoon, drifting slowly east. 7.3
micrometer band clearly shows deep EML plume moving north-
northeast atop moist boundary layer. Moderate instability is
expected from mid-late afternoon south of aforementioned outflow
boundary, across extreme southwest Oklahoma and western north
Texas. Deep moist boundary layer and meridional flow may not be
favorable for significant eastward mixing of the dryline and
latest short term model guidance support this. Backed low level
flow that veers quickly above the surface as well relatively low
LCLs will support low-level mesocyclones and a tornado threat.
Significant CAPE in the hail growth zone and a tendency for
supercell storm mode will support a threat of large to very large
hail as well. Damaging winds are another convective threat.
Thunderstorms should move northeast potentially reaching the I-35
corridor this evening. This will be the main area of convection
today. Further north convection and a few marginally severe storms
will be possible, but the air mass north of the boundary is
comparatively more stable.

We have shifted precipitation chances tomorrow further west based
on trends. There is some uncertainty on how convection will evolve
this evening and overnight, and this will have implications on
tomorrow's forecast. Admittedly the majority of our attention has
been on today and tonight's potential. But, there seems to be
enough signal in model trends to bring thunderstorm chances
further west, with afternoon convection (including the possibility
of severe thunderstorms) certainly possible near I-35 and the
metro.

No significant chances were needed to latter portions of the
forecast. Mean ridging should preclude convection through at least
Sunday afternoon, but some isolated storms that develop in the
panhandles (if they develop) may approach far western Oklahoma by
evening. An ejecting shortwave trough across the central Rockies
into the central and northern Plains early next week will lead to
daily convective chances, and severe thunderstorms may be
possible. We will refine timing, coverage and threats as smaller
scale details become more clear during the next few days.

BRB

&&

.PRELIMINARY POINT TEMPS/POPS...
Oklahoma City OK  65  80  57  73 /  90  60  40  10
Hobart OK         60  80  55  75 /  70  20  20   0
Wichita Falls TX  64  87  59  77 /  30  20  10   0
Gage OK           55  71  48  73 /  50  50  10   0
Ponca City OK     62  77  55  73 /  50  70  50  10
Durant OK         67  80  59  75 /  20  80  50  10

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...None.
TX...None.
&&

17

Hazardous weather outlook, May 10, 10:26 PM CDT, 10 minutes before

Hazardous Weather Outlook...UPDATED
National Weather Service Norman OK
1026 PM CDT Wed May 10 2017

OKZ004>048-050>052-TXZ083>090-120330-
Harper-Woods-Alfalfa-Grant-Kay-Ellis-Woodward-Major-Garfield-
Noble-Roger Mills-Dewey-Custer-Blaine-Kingfisher-Logan-Payne-
Beckham-Washita-Caddo-Canadian-Oklahoma-Lincoln-Grady-McClain-
Cleveland-Pottawatomie-Seminole-Hughes-Harmon-Greer-Kiowa-Jackson-
Tillman-Comanche-Stephens-Garvin-Murray-Pontotoc-Coal-Cotton-
Jefferson-Carter-Johnston-Atoka-Love-Marshall-Bryan-Hardeman-
Foard-Wilbarger-Wichita-Knox-Baylor-Archer-Clay-
1026 PM CDT Wed May 10 2017

This hazardous weather outlook is for portions of northern...
western...central...and southern Oklahoma...and western
north Texas.

.DAY ONE...Tonight...

.Thunderstorms...
There is a Slight Risk of severe thunderstorms across portions of
Oklahoma and western north Texas tonight.

Location...
The Slight Risk area is west of a line from Stillwater and
Shawnee, to Pauls Valley and Ardmore, Oklahoma.

Timing...
Severe storms will be possible for the rest of tonight.

Impacts...
Large hail up to the size of golf balls and damaging
wind gusts up to 70 mph are possible.

Discussion...
Overall, the severe potential will continue to decrease through
the night tonight. A few reports of large hail and damaging winds
remain possible tonight as showers and thunderstorm continue
across parts of Oklahoma and north Texas due to sufficient shear
and instability. No tornadoes are expected for the rest of
tonight.

.SPOTTER AND EMERGENCY MANAGEMENT STATEMENT....
Storm spotter groups and emergency management personnel across
the risk area should remain alert for severe weather operations
tonight.

.Heavy rainfall and flooding...
Rounds of showers and thunderstorms may produce heavy rain and
flooding in some areas tonight.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday...

.Thunderstorms...
There is a slight risk of severe thunderstorms Thursday afternoon
and evening across portions of southeastern Oklahoma. Large hail,
damaging winds, and perhaps a tornado or two will be possible.

Thunderstorm chances will end late Thursday night across eastern
and southeastern Oklahoma.

Thunderstorm chances will then return Monday and Tuesday. Strong
to severe thunderstorms may be possible Monday and Tuesday.

Get graphics and more details at weather.gov/norman...and follow
our weather forecast office on Twitter and Facebook.

MBS

In the hours before

Special weather statement, May 10, 9:39 PM CDT, 57 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
939 PM CDT WED MAY 10 2017

OKZ028-029-110315-
Cleveland OK-McClain OK-
939 PM CDT WED MAY 10 2017

...SIGNIFICANT WEATHER ADVISORY FOR central Cleveland and west
central McClain Counties Until 1015 PM CDT...

AT 938 PM CDT, a strong thunderstorm was located over Cole, moving
east at 35 MPH.

HAZARDS INCLUDE...
Hail up to the size of nickels...
Wind gusts to 50 MPH...

Locations impacted include...
Norman, Newcastle, Blanchard, Purcell, Noble, Slaughterville,
Goldsby, Dibble, Washington, Cole and Lake Thunderbird.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the weather situation closely and be alert for threatening
weather conditions.

&&

LAT...LON 3501 9766 3508 9767 3518 9767 3533 9727
      3509 9718
TIME...MOT...LOC 0238Z 250DEG 31KT 3511 9757

MAHALE

Local storm report, May 10, 9:50 PM CDT, 46 minutes before

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Special weather statement, May 10, 9:53 PM CDT, 43 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
953 PM CDT WED MAY 10 2017

OKZ027-028-040-110330-
Grady OK-Garvin OK-McClain OK-
953 PM CDT WED MAY 10 2017

...SIGNIFICANT WEATHER ADVISORY FOR southeastern Grady...northwestern
Garvin and McClain Counties Until 1030 PM CDT...

AT 951 PM CDT, strong thunderstorms were along a line extending from
4 miles east of Tabler to 3 miles south of Lindsay, moving northeast
at 40 MPH.

HAZARDS INCLUDE...
Hail up to one-half inch diameter...
Wind gusts over 50 MPH...

Locations impacted include...
Newcastle, Purcell, Lindsay, Goldsby, Maysville, Dibble, Wayne,
Washington, Paoli, Cole, Alex, Bradley, Criner, Payne and Erin
Springs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the weather situation closely and be alert for threatening
weather conditions.

&&

LAT...LON 3483 9720 3471 9769 3497 9787 3520 9750
      3514 9741 3509 9740 3508 9737 3505 9735
      3503 9736 3500 9734 3497 9734 3495 9732
      3496 9729
TIME...MOT...LOC 0251Z 237DEG 36KT 3503 9775 3478 9762

BRB

Special weather statement, May 10, 9:56 PM CDT, 40 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
956 PM CDT WED MAY 10 2017

OKZ027-039-110330-
Grady OK-Stephens OK-
956 PM CDT WED MAY 10 2017

...SIGNIFICANT WEATHER ADVISORY FOR southeastern Grady and northern
Stephens Counties Until 1030 PM CDT...

AT 954 PM CDT, a strong thunderstorm was located near Duncan, moving
east at 35 MPH.

HAZARDS INCLUDE...
Hail up to the size of nickels...
Wind gusts to 50 MPH...
Minor flooding in areas of poor drainage...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the weather situation closely and be alert for threatening
weather conditions.

&&

LAT...LON 3461 9812 3479 9767 3468 9767 3468 9758
      3463 9756 3450 9756 3444 9810
TIME...MOT...LOC 0254Z 253DEG 31KT 3456 9797

BRB

Special weather statement, May 10, 9:57 PM CDT, 39 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
957 PM CDT WED MAY 10 2017

OKZ023-038-110330-
Caddo OK-Comanche OK-
957 PM CDT WED MAY 10 2017

...SIGNIFICANT WEATHER ADVISORY FOR southern Caddo and north central
Comanche Counties Until 1030 PM CDT...

AT 956 PM CDT, a strong thunderstorm was located 4 miles west of
Boone, moving northeast at 35 MPH.

HAZARDS INCLUDE...
Hail up to the size of nickels...
Wind gusts to 50 MPH...

Locations impacted include...
Anadarko, Apache, Cyril, Boone, northern Lake Ellsworth and Stecker.

LAT...LON 3478 9861 3492 9862 3516 9823 3504 9815
      3492 9815
TIME...MOT...LOC 0256Z 241DEG 31KT 3487 9854

MAHALE

Special weather statement, May 10, 10:20 PM CDT, 16 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
1020 PM CDT WED MAY 10 2017

OKZ027>030-039>042-046-110400-
Grady OK-Pottawatomie OK-Stephens OK-Carter OK-Pontotoc OK-Garvin OK-
Cleveland OK-McClain OK-Murray OK-
1020 PM CDT WED MAY 10 2017

...SIGNIFICANT WEATHER ADVISORY FOR southeastern Grady...
Pottawatomie...northeastern Stephens...northwestern Carter...
northwestern Pontotoc...Garvin...southeastern Cleveland...
southeastern McClain and northwestern Murray Counties Until 1100 PM
CDT...

AT 1019 PM CDT, strong thunderstorms were along a line extending from
near Norman to near Wayne to near Maysville to 5 miles west of
Antioch to 6 miles southeast of Bray, moving east at 30 MPH.

HAZARDS INCLUDE...
Hail up to one-half inch diameter...
Wind gusts to 50 MPH...

Locations impacted include...
Norman, Shawnee, Tecumseh, Pauls Valley, Purcell, Noble,
Slaughterville, Lindsay, Wynnewood, Lexington, Pink, Stratford,
Maysville, Elmore City, Wayne, Paoli, Asher, Tribbey, Wanette and
Katie.

This includes Interstate 35 between mile markers 60 and 99.

LAT...LON 3536 9683 3503 9682 3480 9690 3469 9702
      3445 9733 3451 9788 3480 9769 3486 9753
      3499 9744 3525 9739
TIME...MOT...LOC 0319Z 261DEG 26KT 3517 9727 3491 9731 3478 9740 3475
9750 3457 9774

KURTZ

The office that day

Everything else NWS Norman, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 10, 7:07 PM CDT	Special Weather Statement	OUN	Kiowa	38 min
May 10, 7:20 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Jackson, Kiowa, Tillman	40 min
May 10, 7:23 PM CDT	Areal Flood Advisory	OUN	Caddo	3 hr
May 10, 7:36 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Tillman	54 min
May 10, 7:42 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Canadian, Grady	48 min
May 10, 7:45 PM CDT	Areal Flood Advisory	OUN	Tillman	60 min
May 10, 7:55 PM CDT	Tornado Warning	OUN	Tillman	35 min
May 10, 8:03 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche	42 min
May 10, 8:17 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Grady, Oklahoma	43 min
May 10, 8:28 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Tillman	62 min
May 10, 8:31 PM CDT	Tornado Warning	OUN	Cotton, Tillman	29 min
May 10, 8:37 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Grady	38 min
May 10, 8:52 PM CDT	Areal Flood Advisory	OUN	Caddo, Grady	3 hr
May 10, 8:55 PM CDT	Areal Flood Advisory	OUN	Comanche, Cotton, Stephens	3 hr
May 10, 9:23 PM CDT	Special Weather Statement	OUN	Oklahoma	37 min
May 10, 9:29 PM CDT	Special Weather Statement	OUN	Stephens	31 min
May 10, 9:36 PM CDT	Special Weather Statement	OUN	Payne	24 min
May 10, 9:39 PM CDT	Special Weather Statement	OUN	Cleveland	36 min
May 10, 9:42 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Payne	18 min
May 10, 9:53 PM CDT	Special Weather Statement	OUN	McClain	37 min
May 10, 9:56 PM CDT	Special Weather Statement	OUN	Stephens	34 min
May 10, 9:57 PM CDT	Special Weather Statement	OUN	Caddo	33 min
May 10, 10:20 PM CDT	Special Weather Statement	OUN	Cleveland, Garvin, Pottawatomie	40 min
May 10, 10:38 PM CDT	Special Weather Statement	OUN	Grady	37 min
May 10, 10:41 PM CDT	Special Weather Statement	OUN	Caddo	34 min
May 10, 10:45 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Hughes, Pottawatomie, Seminole	31 min
May 10, 10:49 PM CDT	Special Weather Statement	OUN	Caddo	26 min
May 10, 11:12 PM CDT	Severe Thunderstorm Warning	OUN	Garvin, McClain, Pontotoc, Pottawatomie	48 min
May 11, 3:14 AM CDT	Special Weather Statement	OUN	Grady	31 min
May 11, 3:55 AM CDT	Special Weather Statement	OUN	Stephens	35 min
May 11, 5:06 AM CDT	Special Weather Statement	OUN	McClain	24 min
May 11, 10:44 AM CDT	Special Weather Statement	OUN	Harper	31 min
May 11, 10:50 AM CDT	Severe Thunderstorm Warning	OUN	Harper	40 min
May 11, 12:03 PM CDT	Special Weather Statement	OUN	Harper	27 min
May 11, 12:28 PM CDT	Special Weather Statement	OUN	Grant	32 min
May 11, 12:30 PM CDT	Special Weather Statement	OUN	Harper	30 min
May 11, 12:57 PM CDT	Special Weather Statement	OUN	Woodward	33 min
May 11, 1:04 PM CDT	Special Weather Statement	OUN	Blaine	26 min
May 11, 1:17 PM CDT	Special Weather Statement	OUN	Kingfisher	28 min
May 11, 1:24 PM CDT	Severe Thunderstorm Warning	OUN	Kingfisher	51 min
May 11, 1:27 PM CDT	Special Weather Statement	OUN	Grant	33 min
May 11, 1:29 PM CDT	Special Weather Statement	OUN	Woodward	31 min
May 11, 1:38 PM CDT	Severe Thunderstorm Warning	OUN	Woodward	52 min
May 11, 1:40 PM CDT	Special Weather Statement	OUN	Payne	35 min
May 11, 1:44 PM CDT	Special Weather Statement	OUN	Garfield	31 min
May 11, 1:48 PM CDT	Severe Thunderstorm Warning	OUN	Grant, Kay	42 min
May 11, 1:59 PM CDT	Severe Thunderstorm Warning	OUN	Woodward	31 min
May 11, 2:00 PM CDT	Severe Thunderstorm Warning	OUN	Garfield	45 min
May 11, 2:03 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Kingfisher, Logan	42 min
May 11, 2:06 PM CDT	Severe Thunderstorm Warning	OUN	Kingfisher, Logan	39 min
May 11, 2:07 PM CDT	Areal Flood Advisory	OUN	Kingfisher	113 min
May 11, 2:19 PM CDT	Severe Thunderstorm Warning	OUN	Noble	41 min
May 11, 2:20 PM CDT	Areal Flood Advisory	OUN	Grant	3 hr
May 11, 2:24 PM CDT	Special Weather Statement	OUN	Custer	36 min
May 11, 2:26 PM CDT	Areal Flood Advisory	OUN	Logan	2 hr
May 11, 2:26 PM CDT	Severe Thunderstorm Warning	OUN	Grant, Kay	49 min
May 11, 2:30 PM CDT	Severe Thunderstorm Warning	OUN	Woods, Woodward	45 min
May 11, 2:38 PM CDT	Special Weather Statement	OUN	Alfalfa	37 min
May 11, 2:38 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Logan, Noble, Payne	52 min
May 11, 2:40 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Logan, Payne	50 min
May 11, 2:44 PM CDT	Severe Thunderstorm Warning	OUN	Noble	46 min
May 11, 2:50 PM CDT	Tornado Warning	OUN	Logan, Noble, Payne	25 min
May 11, 2:57 PM CDT	Severe Thunderstorm Warning	OUN	Kay	48 min
May 11, 3:01 PM CDT	Special Weather Statement	OUN	Major	14 min
May 11, 3:01 PM CDT	Severe Thunderstorm Warning	OUN	Custer	44 min
May 11, 3:08 PM CDT	Areal Flood Advisory	OUN	Logan, Noble, Payne	2 hr
May 11, 3:09 PM CDT	Tornado Warning	OUN	Lincoln, Payne	24 min
May 11, 3:11 PM CDT	Tornado Warning	OUN	Noble, Payne	20 min
May 11, 3:13 PM CDT	Special Weather Statement	OUN	Woods	32 min
May 11, 3:16 PM CDT	Special Weather Statement	OUN	Alfalfa	29 min
May 11, 3:16 PM CDT	Severe Thunderstorm Warning	OUN	Major	44 min
May 11, 3:26 PM CDT	Severe Thunderstorm Warning	OUN	Noble, Payne	19 min
May 11, 3:28 PM CDT	Special Weather Statement	OUN	Dewey	32 min
May 11, 3:28 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Payne	47 min
May 11, 3:31 PM CDT	Flash Flood Warning	OUN	Noble	5 hr
May 11, 3:32 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Woods	43 min
May 11, 3:39 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Dewey	51 min
May 11, 3:43 PM CDT	Areal Flood Advisory	OUN	Kay, Noble	2 hr
May 11, 3:43 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Logan, Oklahoma	47 min
May 11, 3:53 PM CDT	Severe Thunderstorm Warning	OUN	Custer	37 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2017 Every severe thunderstorm warning in 2017

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.