Alert archive / Arkansas / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 234, NWS Tulsa, OK

June 4, 2020Carroll County, Arkansas

NWS Tulsa, OK issued this severe thunderstorm warning at Jun 4, 2020, 5:37 AM CDT for Carroll County, Arkansas. It was in force for 68 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: Jun 4, 2020, 5:37 AM CDT (10:37 UTC)
Expired: Jun 4, 2020, 6:45 AM CDT
In force: 68 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Carroll County, AR

The radar

The Springfield radar (KSGF), 100 km from the middle of the area, began a volume at 10:35 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

Springfield, MO (KSGF), launched 00:00Z, 10.6 hours before the alert went out and 66 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: 1794 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 1420 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 8 m²/s²
0-3 km storm-relative helicity: 65 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 3, 6:25 PM CDT, 11 hours 12 minutes earlier.

Area forecast discussion, Jun 3, 6:25 PM CDT, 11 hours 12 minutes before

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Hazardous weather outlook, Jun 3, 5:06 PM CDT, 12 hours 31 minutes before

Hazardous Weather Outlook
National Weather Service Tulsa OK
506 PM CDT Wed Jun 3 2020

ARZ001-002-010-011-019-020-029-OKZ049-053>076-041030-
Adair OK-Benton AR-Carroll AR-Cherokee OK-Choctaw OK-Craig OK-
Crawford AR-Creek OK-Delaware OK-Franklin AR-Haskell OK-Latimer OK-
Le Flore OK-Madison AR-Mayes OK-McIntosh OK-Muskogee OK-Nowata OK-
Okfuskee OK-Okmulgee OK-Osage OK-Ottawa OK-Pawnee OK-Pittsburg OK-
Pushmataha OK-Rogers OK-Sebastian AR-Sequoyah OK-Tulsa OK-Wagoner OK-
Washington OK-Washington AR-
506 PM CDT Wed Jun 3 2020

This Outlook is for Northwest and West Central Arkansas as well as
much of Eastern Oklahoma.

.DAY ONE...This Evening and Tonight.

SEVERE THUNDERSTORM.
	RISK...Limited.
	AREA...Northeast Oklahoma and Western Arkansas.
	ONSET...Ongoing and Again Late Tonight.

DISCUSSION...
Scattered thunderstorms continued to develop late this afternoon
across parts of far Eastern Oklahoma and Western Arkansas. It is
possible that one or two of these storms could become strong to
severe with strong gusty winds the concern. This activity will
remain possible into the early evening hours and should weaken
with the loss of daytime heating.

Additional thunderstorms, forecast to develop in Kansas and
Missouri, look to drop southward as a thunderstorm complex into
parts of Northeast Oklahoma and Northwest Arkansas after midnight
tonight. Areas along and north of Highway 412 are most
susceptible to seeing a few strong to severe thunderstorms within
the complex.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
Local Spotter Activation May Be Needed.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.
THURSDAY...Thunderstorm Potential.
FRIDAY...Dangerous Heat Potential.
SATURDAY AND SUNDAY...No Hazards.
MONDAY AND TUESDAY...Thunderstorm Potential.

EXTENDED DISCUSSION...
Thunderstorms are forecast to be ongoing across parts of
northeast Oklahoma and northwest Arkansas Thursday morning, moving
southeastward into the afternoon. These thunderstorms may
continue to pose an isolated severe weather threat during the
daytime Thursday. The coverage will diminish by the evening hours.
A few afternoon thunderstorms may again affect portions of
western Arkansas on Friday, although severe weather appears
unlikely.

Heat and humidity will continue to build across the area late this
week and into the weekend, with triple digit heat index values
possible at times. Given that this is the first prolonged period
of heat and humidity so far this year, precautions should be taken
by those spending a lot of time outdoors during the heat of the
day.

weather.gov/tulsa contains additional information.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 4, 5:30 AM CDT	Special Weather Statement	TSA	Craig, Delaware, Ottawa	45 min
Jun 4, 7:57 AM CDT	Special Weather Statement	TSA	Delaware	33 min
Jun 4, 8:58 AM CDT	Special Weather Statement	TSA	Adair	47 min
Jun 4, 9:06 AM CDT	Areal Flood Advisory	TSA	Adair, Sequoyah	3 hr
Jun 4, 10:12 AM CDT	Special Weather Statement	TSA	LeFlore	48 min
Jun 4, 11:13 AM CDT	Special Weather Statement	TSA	LeFlore	47 min
Jun 3, 7:29 PM CDT	Special Weather Statement	TSA	Sebastian	31 min
Jun 4, 6:15 AM CDT	Special Weather Statement	TSA	Benton, Madison, Washington	45 min
Jun 4, 6:50 AM CDT	Special Weather Statement	TSA	Madison, Washington	25 min
Jun 4, 9:24 AM CDT	Special Weather Statement	TSA	Crawford, Franklin, Sebastian	66 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2020 Every severe thunderstorm warning 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.