Alert archive / Missouri / Tornado Warnings in 2018
Tornado Warning 37, NWS Memphis, TN
NWS Memphis, TN issued this tornado warning at Aug 20, 2018, 7:08 PM CDT for Pemiscot County, Missouri; Dyer County, Tennessee. It was in force for 37 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 20, 2018, 7:08 PM CDT (00:08 UTC)
- Expired
- Aug 20, 2018, 7:45 PM CDT
- In force
- 37 min
- Issued by
- NWS Memphis, TN
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Pemiscot County, MO, Dyer County, TN
The radar
The Memphis radar (KNQA), 87 km from the middle of the area, began a volume at 00:10 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 20, 12:46 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 20, 4:45 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Little Rock, AR (KBYH), launched 00:00Z, 0.1 hours before the alert went out and 145 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
- 72 J/kg
- Mixed-layer CIN
- -89 J/kg
- Mixed-layer LCL
- 1310 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 28 m²/s²
- 0-3 km storm-relative helicity
- 69 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.1
The text
As transmitted.
532
WFUS54 KMEG 210008
TORMEG
MOC155-TNC045-210045-
/O.NEW.KMEG.TO.W.0037.180821T0008Z-180821T0045Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Memphis TN
708 PM CDT MON AUG 20 2018
The National Weather Service in Memphis has issued a
* Tornado Warning for...
Southern Pemiscot County in southeastern Missouri...
Northwestern Dyer County in northwestern Tennessee...
* Until 745 PM CDT.
* At 708 PM CDT, doppler radar indicated a severe thunderstorm
producing a tornado was located over Steele, moving east at 25 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...
Caruthersville, Steele, Ayers, Boothspoint, Samford, Stubtown,
Cottonwood Point, Canady, Denton, Covington and New Survey.
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 3605 8960 3607 8992 3616 8990 3619 8961
3619 8957
TIME...MOT...LOC 0008Z 268DEG 22KT 3611 8986
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$2 follow-up statements
956
WWUS54 KMEG 210030
SVSMEG
Severe Weather Statement
National Weather Service Memphis TN
730 PM CDT MON AUG 20 2018
MOC155-TNC045-210045-
/O.CON.KMEG.TO.W.0037.000000T0000Z-180821T0045Z/
Pemiscot MO-Dyer TN-
730 PM CDT MON AUG 20 2018
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR
SOUTHEASTERN PEMISCOT AND NORTHWESTERN DYER COUNTIES...
At 730 PM CDT, doppler radar indicated a severe thunderstorm
producing a tornado was located near Heloise, or near Caruthersville,
moving east at 25 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Caruthersville, Ayers, Boothspoint, Cottonwood Point and Stubtown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a storm shelter or an interior room on the
lowest floor of a sturdy building. Avoid windows. If you are
outdoors, in a mobile home, or in a vehicle, move to the closest
substantial shelter and protect yourself from flying debris.
&&
LAT...LON 3606 8979 3618 8973 3619 8961 3619 8957
3605 8960
TIME...MOT...LOC 0030Z 268DEG 22KT 3611 8969
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$849
WWUS54 KMEG 210037
SVSMEG
Severe Weather Statement
National Weather Service Memphis TN
737 PM CDT MON AUG 20 2018
MOC155-TNC045-210046-
/O.EXP.KMEG.TO.W.0037.000000T0000Z-180821T0045Z/
Pemiscot MO-Dyer TN-
737 PM CDT MON AUG 20 2018
...THE TORNADO WARNING FOR SOUTHEASTERN PEMISCOT AND NORTHWESTERN
DYER COUNTIES WILL EXPIRE AT 745 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire. However gusty
winds are still possible with this thunderstorm.
A Severe Thunderstorm Watch remains in effect until 800 PM CDT for
southeastern Missouri. A Severe Thunderstorm Watch also remains in
effect until midnight CDT for northwestern Tennessee.
LAT...LON 3606 8979 3618 8973 3619 8961 3619 8957
3605 8960
TIME...MOT...LOC 0036Z 268DEG 22KT 3611 8965
$$The office that day
Everything else NWS Memphis, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 20, 7:45 PM CDT | Special Weather Statement | MEG | Dyer | 45 min |
| Aug 20, 9:50 PM CDT | Areal Flood Advisory | MEG | Henry | 115 min |
Nearby
Tornado Warnings in Missouri, 2018Tornado Warnings in Tennessee, 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.