Alert archive / Arkansas / Tornado Warnings in 2018
Tornado Warning 17, NWS Tulsa, OK
NWS Tulsa, OK issued this tornado warning at Aug 19, 2018, 4:17 PM CDT for Washington County, Arkansas. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 19, 2018, 4:17 PM CDT (21:17 UTC)
- Expired
- Aug 19, 2018, 4:46 PM CDT
- In force
- 29 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
County Washington County, AR
The radar
The Western Arkansas radar (KSRX), 63 km from the middle of the area, began a volume at 21:18 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 19, 4:07 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 9.3 hours before the alert went out and 126 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
- 1069 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
462
WFUS54 KTSA 192117
TORTSA
ARC143-192200-
/O.NEW.KTSA.TO.W.0017.180819T2117Z-180819T2200Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Tulsa OK
417 PM CDT SUN AUG 19 2018
The National Weather Service in Tulsa has issued a
* Tornado Warning for...
Southwestern Washington County in northwestern Arkansas...
* Until 500 PM CDT.
* At 417 PM CDT, a severe thunderstorm capable of producing a tornado
was located 6 miles west of Strickler, moving northeast at 20 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 in or near the path include...
Prairie Grove... West Fork...
Strickler... Prairie Grove Battlefield
State...
Clyde... Woolsey...
Canehill... Hogeye...
Odell... Morrow...
This includes Interstate 49 between mile markers 49 and 53.
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 3590 9409 3576 9442 3576 9444 3583 9451
3583 9450 3600 9430
TIME...MOT...LOC 2117Z 231DEG 18KT 3581 9443
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
Lacy2 follow-up statements
989
WWUS54 KTSA 192125
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
425 PM CDT SUN AUG 19 2018
ARC143-192200-
/O.CON.KTSA.TO.W.0017.000000T0000Z-180819T2200Z/
Washington AR-
425 PM CDT SUN AUG 19 2018
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR
SOUTHWESTERN WASHINGTON COUNTY...
At 424 PM CDT, a severe thunderstorm capable of producing a tornado
was located 3 miles west of Strickler, moving northeast at 30 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations in or near the path include...
Prairie Grove... West Fork...
Strickler... Clyde...
Woolsey... Canehill...
Hogeye... Morrow...
Prairie Grove Battlefield State...
This includes Interstate 49 between mile markers 49 and 53.
The circulation has weakened over the past 10 minutes, however some
restrengthening is possible.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3590 9409 3579 9437 3579 9441 3583 9445
3587 9444 3600 9430
TIME...MOT...LOC 2124Z 230DEG 26KT 3584 9438
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
Lacy111
WWUS54 KTSA 192146
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
446 PM CDT SUN AUG 19 2018
ARC143-192156-
/O.CAN.KTSA.TO.W.0017.000000T0000Z-180819T2200Z/
Washington AR-
446 PM CDT SUN AUG 19 2018
...THE TORNADO WARNING FOR SOUTHWESTERN WASHINGTON COUNTY IS
CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore the warning has been cancelled.
A Tornado Watch remains in effect until 900 PM CDT for northwestern
Arkansas.
LAT...LON 3590 9409 3579 9437 3579 9441 3583 9445
3587 9444 3600 9430
TIME...MOT...LOC 2144Z 231DEG 18KT 3591 9427
$$
LacyThe office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 4:34 PM CDT | Special Weather Statement | TSA | Crawford | 26 min |
| Aug 19, 4:46 PM CDT | Special Weather Statement | TSA | Crawford, Washington | 44 min |
| Aug 19, 5:09 PM CDT | Severe Thunderstorm Warning | TSA | Crawford, Franklin, Washington | 51 min |
| Aug 19, 5:41 PM CDT | Severe Thunderstorm Warning | TSA | Crawford, Franklin, Madison | 49 min |
| Aug 19, 5:53 PM CDT | Tornado Warning | TSA | Madison | 37 min |
| Aug 19, 6:01 PM CDT | Special Weather Statement | TSA | Franklin | 29 min |
| Aug 19, 6:14 PM CDT | Severe Thunderstorm Warning | TSA | Franklin, Madison | 19 min |
| Aug 19, 6:41 PM CDT | Severe Thunderstorm Warning | TSA | Franklin, Sebastian | 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.