Alert archive / Arkansas / Tornado Warnings in 2018
Tornado Warning 28, NWS Memphis, TN
NWS Memphis, TN issued this tornado warning at May 20, 2018, 1:13 PM CDT for Lawrence County, Arkansas. It was in force for 32 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- May 20, 2018, 1:13 PM CDT (18:13 UTC)
- Expired
- May 20, 2018, 1:45 PM CDT
- In force
- 32 min
- Issued by
- NWS Memphis, TN
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
County Lawrence County, AR
The radar
The Memphis radar (KNQA), 138 km from the middle of the area, began a volume at 18:16 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 20, 1:35 PM CDT | HAIL 1.75 | Black Rock, AR | HAIL RANGED DIME SIZE TO GOLFBALL. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 20, 12:32 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Little Rock, AR (KBYH), launched 12:00Z, 6.2 hours before the alert went out and 175 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
- 1368 J/kg
- Mixed-layer CIN
- -61 J/kg
- Mixed-layer LCL
- 1256 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -28 m²/s²
- 0-3 km storm-relative helicity
- -10 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
246
WFUS54 KMEG 201813
TORMEG
ARC075-201845-
/O.NEW.KMEG.TO.W.0028.180520T1813Z-180520T1845Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Memphis TN
113 PM CDT SUN MAY 20 2018
The National Weather Service in Memphis has issued a
* Tornado Warning for...
Central Lawrence County in eastern Arkansas...
* Until 145 PM CDT.
* At 113 PM CDT, a severe thunderstorm producing a tornado was
located over Lake Charles State Park, moving east at 10 mph.
HAZARD...Tornado.
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.
* Locations impacted include...
Hoxie, Black Rock, Lake Charles State Park, Portia, Minturn,
Annieville, Powhatan, Lauratown, Clover Bend, Coffman, Arbor Grove
and Powhatan Historic State Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a storm shelter or an interior room on the
lowest floor of a sturdy building. Avoid windows. If you are
outdoors, in a mobile home, or in a vehicle, move to the closest
substantial shelter and protect yourself from flying debris.
&&
LAT...LON 3615 9108 3613 9109 3613 9108 3612 9108
3612 9106 3615 9106 3615 9101 3597 9097
3594 9118 3615 9125
TIME...MOT...LOC 1813Z 250DEG 8KT 3606 9116
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$2 follow-up statements
312
WWUS54 KMEG 201830
SVSMEG
Severe Weather Statement
National Weather Service Memphis TN
130 PM CDT SUN MAY 20 2018
ARC075-201845-
/O.CON.KMEG.TO.W.0028.000000T0000Z-180520T1845Z/
Lawrence AR-
130 PM CDT SUN MAY 20 2018
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 145 PM CDT FOR CENTRAL
LAWRENCE COUNTY...
At 130 PM CDT, a severe thunderstorm producing a tornado was located
over Lake Charles State Park, moving east at 10 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Hoxie, Black Rock, Lake Charles State Park, Portia, Powhatan,
Lauratown and Powhatan Historic State Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a storm shelter or an interior room on the
lowest floor of a sturdy building. Avoid windows. If you are
outdoors, in a mobile home, or in a vehicle, move to the closest
substantial shelter and protect yourself from flying debris.
&&
LAT...LON 3612 9108 3612 9107 3611 9107 3611 9105
3614 9105 3614 9101 3603 9098 3601 9114
3614 9118 3614 9108 3613 9109 3613 9108
TIME...MOT...LOC 1830Z 250DEG 8KT 3607 9111
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$232
WWUS54 KMEG 201838
SVSMEG
Severe Weather Statement
National Weather Service Memphis TN
138 PM CDT SUN MAY 20 2018
ARC075-201845-
/O.EXP.KMEG.TO.W.0028.000000T0000Z-180520T1845Z/
Lawrence AR-
138 PM CDT SUN MAY 20 2018
...THE TORNADO WARNING FOR CENTRAL LAWRENCE COUNTY WILL EXPIRE AT 145
PM CDT...
The tornado threat has diminished and the Tornado Warning has been
cancelled. However, large hail and damaging winds remain likely and a
Severe Thunderstorm Warning remains in effect for the area.
A Severe Thunderstorm Watch remains in effect until 800 PM CDT for
eastern Arkansas.
Remember, a Severe Thunderstorm Warning still remains in effect for
until 215 PM CDT!
LAT...LON 3612 9108 3612 9107 3611 9107 3611 9105
3614 9105 3614 9101 3603 9098 3601 9114
3614 9118 3614 9108 3613 9109 3613 9108
TIME...MOT...LOC 1835Z 250DEG 8KT 3607 9110
$$The office that day
Everything else NWS Memphis, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 20, 12:44 PM CDT | Severe Thunderstorm Warning | MEG | Lawrence, Randolph | 46 min |
| May 20, 1:02 PM CDT | Severe Thunderstorm Warning | MEG | Clay | 43 min |
| May 20, 1:23 PM CDT | Severe Thunderstorm Warning | MEG | Lawrence, Randolph | 52 min |
| May 20, 1:40 PM CDT | Severe Thunderstorm Warning | MEG | Clay | 65 min |
| May 20, 1:42 PM CDT | Severe Thunderstorm Warning | MEG | Lawrence | 48 min |
| May 20, 1:46 PM CDT | Tornado Warning | MEG | Lawrence, Randolph | 12 min |
| May 20, 1:51 PM CDT | Severe Thunderstorm Warning | MEG | Clay, Greene, Lawrence, Randolph | 54 min |
| May 20, 2:05 PM CDT | Severe Thunderstorm Warning | MEG | Lawrence | 40 min |
| May 20, 2:12 PM CDT | Severe Thunderstorm Warning | MEG | Mississippi | 48 min |
| May 20, 2:13 PM CDT | Tornado Warning | MEG | Lawrence | 21 min |
| May 20, 2:30 PM CDT | Severe Thunderstorm Warning | MEG | Craighead, Greene, Lawrence | 45 min |
| May 20, 2:37 PM CDT | Severe Thunderstorm Warning | MEG | Greene, Lawrence | 53 min |
| May 20, 2:40 PM CDT | Severe Thunderstorm Warning | MEG | Clay | 27 min |
| May 20, 2:45 PM CDT | Severe Thunderstorm Warning | MEG | Clay, Greene | 60 min |
| May 20, 2:59 PM CDT | Severe Thunderstorm Warning | MEG | Mississippi | 46 min |
| May 20, 3:03 PM CDT | Flash Flood Warning | MEG | Mississippi | 117 min |
| May 20, 3:09 PM CDT | Severe Thunderstorm Warning | MEG | Craighead, Greene | 51 min |
| May 20, 3:47 PM CDT | Severe Thunderstorm Warning | MEG | Craighead, Greene, Mississippi | 22 min |
| May 20, 3:58 PM CDT | Severe Thunderstorm Warning | MEG | Crittenden | 47 min |
| May 20, 4:18 PM CDT | Severe Thunderstorm Warning | MEG | Lee | 27 min |
Nearby
Tornado Warnings in Arkansas, 2018Every tornado warning in 2018Tornadoes in 2018
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.