Alert archive / Arkansas / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 320, NWS Little Rock, AR
NWS Little Rock, AR issued this severe thunderstorm warning at Aug 11, 2020, 12:27 PM CDT for Logan County, Yell County, Arkansas. It was in force for 48 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
- Aug 11, 2020, 12:27 PM CDT (17:27 UTC)
- Expired
- Aug 11, 2020, 1:15 PM CDT
- In force
- 48 min
- Issued by
- NWS Little Rock, AR
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Logan County, AR, Yell County, AR
The radar
The Western Arkansas radar (KSRX), 75 km from the middle of the area, began a volume at 17:28 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 12:00Z, 5.5 hours before the alert went out and 200 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
- 1534 J/kg
- Mixed-layer CIN
- -62 J/kg
- Mixed-layer LCL
- 1084 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -71 m²/s²
- 0-3 km storm-relative helicity
- -23 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Little Rock, AR wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 11, 6:36 AM CDT, 5 hours 51 minutes earlier.
Area forecast discussion, Aug 11, 6:36 AM CDT, 5 hours 51 minutes before
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</html>Hazardous weather outlook, Aug 11, 4:15 AM CDT, 8 hours 12 minutes before
Hazardous Weather Outlook National Weather Service Little Rock AR 415 AM CDT Tue Aug 11 2020 ARZ003>008-012>017-021>025-030>034-037>047-052>057-062>069-121000- Boone-Marion-Baxter-Fulton-Sharp-Randolph-Newton-Searcy-Stone- Izard-Independence-Lawrence-Johnson-Pope-Van Buren-Cleburne- Jackson-Logan-Conway-Faulkner-White-Woodruff-Scott-Yell-Perry- Polk-Montgomery-Garland-Saline-Pulaski-Lonoke-Prairie-Monroe-Pike- Clark-Hot Spring-Grant-Jefferson-Arkansas-Dallas-Cleveland- Lincoln-Desha-Ouachita-Calhoun-Bradley-Drew- 415 AM CDT Tue Aug 11 2020 This Hazardous Weather Outlook is for a Large Part of Arkansas. .DAY ONE...Today and Tonight Showers and thunderstorms will be possible late this morning and into the evening hours over the majority of the state. Some storms may be strong to possibly severe with the primary hazard being strong winds. Unseasonably hot conditions will continue this afternoon with high temperatures in the lower to mid 90s for most locations. Widespread heat index values in excess of 100 degrees are expected with a few areas possibly reaching 105 degrees for a brief period of time. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Hot and humid conditions will continue through the end of the week, with chances for mainly afternoon showers and thunderstorms. While organized severe is not anticipated, a few stronger storms can not be ruled out. the primary concern with any strong storm would be gusty winds. .Spotter Information Statement... Spotter activation will not be needed. && Visit NWS Little Rock on the web. Go to http://weather.gov/lzk.
In the hours before
Special weather statement, Aug 11, 8:00 AM CDT, 4 hours 27 minutes before
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</html>Special weather statement, Aug 11, 11:13 AM CDT, 1 hour 14 minutes before
Special Weather Statement
National Weather Service Little Rock AR
1113 AM CDT Tue Aug 11 2020
ARZ030-037-111700-
Scott AR-Logan AR-
1113 AM CDT Tue Aug 11 2020
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN LOGAN AND NORTHERN
SCOTT COUNTIES UNTIL NOON CDT...
At 1113 AM CDT, Doppler radar was tracking a strong thunderstorm near
Heavener Runestone State Park, or 12 miles southeast of Poteau,
moving northeast at 25 mph.
Pea size hail and wind gusts of 50 to 55 mph will be possible with
this storm.
Locations impacted include...
Waldron... Mansfield...
Beauchamp... Cardiff...
Echo... Oliver...
Morgan Springs... Bates...
Barber... Black Fork...
Cauthron... Winfield...
Hon... Lucas...
Liberty... Ione...
Elm Park...
LAT...LON 3493 9445 3493 9443 3495 9441 3494 9439
3496 9437 3495 9434 3497 9424 3506 9423
3506 9425 3510 9414 3514 9414 3514 9404
3487 9387 3473 9443 3473 9445
TIME...MOT...LOC 1613Z 237DEG 21KT 3492 9448
65Special weather statement, Aug 11, 11:28 AM CDT, 59 minutes before
Special Weather Statement National Weather Service Little Rock AR 1128 AM CDT Tue Aug 11 2020 ARZ003-111715- Boone AR- 1128 AM CDT Tue Aug 11 2020 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN BOONE COUNTY UNTIL 1215 PM CDT... At 1127 AM CDT, Doppler radar was tracking a strong thunderstorm near Green Forest, or 9 miles east of Berryville, moving northeast at 15 mph. Penny size hail and wind gusts of 50 to 55 mph will be possible with this storm. Locations impacted include... Harrison... Bergman... Omaha... Myrtle... Roberson Hollow... Self... Alpena... Bear Creek Springs... New Hope in Boone County... Hopewell in Boone County... Burlington... Ridgeway... PRECAUTIONARY/PREPAREDNESS ACTIONS... Torrential rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. && LAT...LON 3627 9295 3626 9330 3650 9330 3650 9307 TIME...MOT...LOC 1627Z 242DEG 15KT 3642 9340 65
Special weather statement, Aug 11, 11:42 AM CDT, 45 minutes before
Special Weather Statement National Weather Service Little Rock AR 1142 AM CDT Tue Aug 11 2020 ARZ016-025-111730- Independence AR-Jackson AR- 1142 AM CDT Tue Aug 11 2020 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN INDEPENDENCE AND CENTRAL JACKSON COUNTIES UNTIL 1230 PM CDT... At 1141 AM CDT, Doppler radar was tracking a strong thunderstorm near Oil Trough, or 14 miles southeast of Batesville, moving northeast at 20 mph. Pea size hail and winds in excess of 40 mph will be possible with this storm. Locations impacted include... Newport... Diaz... Newark... Oil Trough... Jacksonport... Magness... Thida... Rosie... Macks... Huff... PRECAUTIONARY/PREPAREDNESS ACTIONS... Torrential rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 3551 9155 3561 9163 3577 9141 3562 9126 TIME...MOT...LOC 1641Z 241DEG 16KT 3559 9151 SHELTON
Special weather statement, Aug 11, 11:44 AM CDT, 43 minutes before
Special Weather Statement
National Weather Service Little Rock AR
1144 AM CDT Tue Aug 11 2020
ARZ025-033-034-111730-
White AR-Woodruff AR-Jackson AR-
1144 AM CDT Tue Aug 11 2020
...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL WOODRUFF...SOUTHERN
JACKSON AND EASTERN WHITE COUNTIES UNTIL 1230 PM CDT...
At 1143 AM CDT, Doppler radar was tracking a strong thunderstorm 8
miles west of Tupelo, or 9 miles north of Augusta, moving northeast
at 15 mph.
Pea size hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
Newport... Tupelo...
Algoa... Beedeville...
Amagon... Weldon...
Blackville... Olyphant...
Shoffner... Ingleside...
Fitzhugh... Erwin...
Possum Grape...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3532 9134 3547 9149 3553 9140 3553 9137
3555 9137 3566 9120 3549 9104 3546 9104
TIME...MOT...LOC 1643Z 245DEG 12KT 3543 9137
SHELTONThe office that day
Everything else NWS Little Rock, AR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 8:00 AM CDT | Special Weather Statement | LZK | Stone | 45 min |
| Aug 11, 11:13 AM CDT | Special Weather Statement | LZK | Scott | 47 min |
| Aug 11, 11:28 AM CDT | Special Weather Statement | LZK | Boone | 47 min |
| Aug 11, 11:42 AM CDT | Special Weather Statement | LZK | Independence | 48 min |
| Aug 11, 11:44 AM CDT | Special Weather Statement | LZK | Jackson | 46 min |
| Aug 11, 12:03 PM CDT | Severe Thunderstorm Warning | LZK | Boone, Marion, Newton | 30 min |
| Aug 11, 1:35 PM CDT | Severe Thunderstorm Warning | LZK | Newton, Pope, Searcy, Van Buren | 25 min |
| Aug 11, 2:03 PM CDT | Flash Flood Warning | LZK | Newton, Searcy | 3 hr |
| Aug 11, 2:36 PM CDT | Special Weather Statement | LZK | Conway | 24 min |
| Aug 11, 2:40 PM CDT | Special Weather Statement | LZK | Cleburne, Van Buren | 35 min |
| Aug 11, 3:04 PM CDT | Special Weather Statement | LZK | Faulkner | 26 min |
| Aug 11, 3:16 PM CDT | Special Weather Statement | LZK | Prairie | 44 min |
| Aug 11, 3:30 PM CDT | Flash Flood Warning | LZK | Faulkner, Lonoke, Prairie, Pulaski, White | 3 hr |
| Aug 11, 3:36 PM CDT | Special Weather Statement | LZK | Pulaski | 24 min |
| Aug 11, 4:10 PM CDT | Severe Thunderstorm Warning | LZK | Grant, Pulaski, Saline | 35 min |
| Aug 11, 4:24 PM CDT | Severe Thunderstorm Warning | LZK | Grant, Hot Spring, Saline | 36 min |
| Aug 11, 4:49 PM CDT | Flash Flood Warning | LZK | Monroe, Prairie | 3 hr |
| Aug 11, 5:29 PM CDT | Special Weather Statement | LZK | Jefferson | 31 min |
| Aug 11, 6:04 PM CDT | Special Weather Statement | LZK | Arkansas | 41 min |
Nearby
Severe Thunderstorm Warnings in Arkansas, 2020Every 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.