Alert archive / Arkansas / Tornado Warnings in 2018
Tornado Warning 13, NWS Little Rock, AR
NWS Little Rock, AR issued this tornado warning at Apr 13, 2018, 5:31 PM CDT for Boone County, Arkansas. It was in force for 29 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
- Apr 13, 2018, 5:31 PM CDT (22:31 UTC)
- Expired
- Apr 13, 2018, 6:00 PM CDT
- In force
- 29 min
- Issued by
- NWS Little Rock, AR
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.0 in
County Boone County, AR
The radar
The Springfield radar (KSGF), 92 km from the middle of the area, began a volume at 22:30 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 |
|---|---|---|---|
| Apr 13, 5:49 PM CDT | HAIL 2.5 | 3 E Omaha, AR |
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 |
|---|---|---|---|
| Apr 13, 1:50 PM CDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 10.5 hours before the alert went out and 81 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1715 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 572 m²/s²
- 0-3 km storm-relative helicity
- 541 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
169
WFUS54 KLZK 132231
TORLZK
ARC009-132300-
/O.NEW.KLZK.TO.W.0013.180413T2231Z-180413T2300Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Little Rock AR
531 PM CDT FRI APR 13 2018
The National Weather Service in Little Rock has issued a
* Tornado Warning for...
Northwestern Boone County in north central Arkansas...
* Until 600 PM CDT
* At 531 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Green Forest, or 10 miles east of Berryville,
moving northeast at 55 mph.
HAZARD...Tornado and quarter size hail.
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...
Omaha... Roberson Hollow...
Self... Alpena...
Crumpler Subdivision... New Hope in Boone County...
Burlington... Bull Shoals Lake...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement 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 3650 9289 3629 9330 3650 9329
TIME...MOT...LOC 2231Z 226DEG 46KT 3634 9338
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
623 follow-up statements
117
WWUS54 KLZK 132240
SVSLZK
Severe Weather Statement
National Weather Service Little Rock AR
540 PM CDT FRI APR 13 2018
ARC009-132300-
/O.CON.KLZK.TO.W.0013.000000T0000Z-180413T2300Z/
Boone AR-
540 PM CDT FRI APR 13 2018
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM CDT FOR
NORTHWESTERN BOONE COUNTY...
At 539 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Roberson Hollow, or 14 miles south of Branson,
moving northeast at 60 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Omaha... Roberson Hollow...
Crumpler Subdivision... New Hope in Boone County...
Bull Shoals Lake...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3650 9296 3636 9330 3650 9329
TIME...MOT...LOC 2239Z 226DEG 53KT 3644 9326
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
62322
WWUS54 KLZK 132243
SVSLZK
Severe Weather Statement
National Weather Service Little Rock AR
543 PM CDT FRI APR 13 2018
ARC009-132300-
/O.CON.KLZK.TO.W.0013.000000T0000Z-180413T2300Z/
Boone AR-
543 PM CDT FRI APR 13 2018
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM CDT FOR
NORTHWESTERN BOONE COUNTY...
At 542 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Roberson Hollow, or 12 miles south of Branson,
moving northeast at 45 mph.
HAZARD...Tornado and ping pong ball size hail.
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...
Omaha... Roberson Hollow...
Crumpler Subdivision... New Hope in Boone County...
Bull Shoals Lake...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement 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 3650 9296 3636 9330 3650 9329
TIME...MOT...LOC 2242Z 223DEG 41KT 3646 9325
TORNADO...RADAR INDICATED
HAIL...1.50IN
$$
62561
WWUS54 KLZK 132258
SVSLZK
Severe Weather Statement
National Weather Service Little Rock AR
558 PM CDT FRI APR 13 2018
ARC009-132308-
/O.EXP.KLZK.TO.W.0013.000000T0000Z-180413T2300Z/
Boone AR-
558 PM CDT FRI APR 13 2018
...THE TORNADO WARNING FOR NORTHWESTERN BOONE COUNTY WILL EXPIRE AT
600 PM CDT...
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire.
A tornado watch remains in effect until 1000 PM CDT for north central
Arkansas.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Little Rock.
LAT...LON 3650 9296 3636 9330 3650 9329
TIME...MOT...LOC 2258Z 226DEG 46KT 3659 9308
$$
62The office that day
Everything else NWS Little Rock, AR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 13, 4:04 AM CDT | Wind Advisory | LZK | Arkansas, Desha, Drew, Independence, Jackson, Jefferson and 6 more | 18 hr |
| Apr 13, 2:46 PM CDT | Flash Flood Watch | LZK | Arkansas, Bradley, Desha, Drew, Lincoln, Monroe | 15 hr |
| Apr 13, 3:14 PM CDT | Special Weather Statement | LZK | Montgomery | 46 min |
| Apr 13, 5:49 PM CDT | Severe Thunderstorm Warning | LZK | Searcy, Stone, Van Buren | 41 min |
| Apr 13, 5:58 PM CDT | Severe Thunderstorm Warning | LZK | Johnson, Logan, Newton, Pope | 47 min |
| Apr 13, 6:13 PM CDT | Severe Thunderstorm Warning | LZK | Polk, Scott | 47 min |
| Apr 13, 6:21 PM CDT | Severe Thunderstorm Warning | LZK | Johnson, Logan, Scott, Yell | 39 min |
| Apr 13, 6:41 PM CDT | Severe Thunderstorm Warning | LZK | Johnson, Newton, Pope, Searcy, Van Buren | 49 min |
| Apr 13, 6:47 PM CDT | Tornado Warning | LZK | Johnson, Newton | 43 min |
| Apr 13, 6:56 PM CDT | Severe Thunderstorm Warning | LZK | Logan, Scott, Yell | 49 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.