Alert archive / Arkansas / Special Weather Statements in 2018
Special Weather Statement, NWS Memphis, TN
NWS Memphis, TN issued this special weather statement at May 21, 2018, 1:07 AM CDT for Lee County, Arkansas. It was in force for 38 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
- May 21, 2018, 1:07 AM CDT (06:07 UTC)
- Expired
- May 21, 2018, 1:45 AM CDT
- In force
- 38 min
- Issued by
- NWS Memphis, TN
County Lee County, AR
The radar
The Memphis radar (KNQA), 104 km from the middle of the area, began a volume at 06:07 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
Little Rock, AR (KBYH), launched 00:00Z, 6.1 hours before the alert went out and 75 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
- 1844 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 1433 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 30 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
604 WWUS84 KMEG 210607 SPSMEG Special Weather Statement National Weather Service Memphis TN 107 AM CDT MON MAY 21 2018 ARZ049-058-MSZ007-210645- Phillips AR-Lee AR-Tunica MS- 107 AM CDT MON MAY 21 2018 ...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED UNTIL 145 AM CDT FOR... Northeastern Phillips County in eastern Arkansas... Lee County in eastern Arkansas... West central Tunica County in northwestern Mississippi... At 106 AM CDT...a strong thunderstorm producing pea size hail or larger and winds at least 40 mph was located near West Helena, moving north at 30 mph. Very heavy rain along with continuous cloud to ground lightning are also possible with this thunderstorm. People in northeastern Phillips...Lee and west central Tunica Counties should monitor this storm closely. LAT...LON 3490 9101 3490 9050 3456 9055 3450 9075 TIME...MOT...LOC 0606Z 167DEG 24KT 3460 9067 $$
The office that day
Everything else NWS Memphis, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 21, 12:41 AM CDT | Special Weather Statement | MEG | Monroe | 49 min |
| May 21, 1:15 AM CDT | Special Weather Statement | MEG | Lee | 45 min |
| May 21, 1:30 AM CDT | Special Weather Statement | MEG | Cross, St. Francis | 45 min |
| May 21, 2:27 PM CDT | Special Weather Statement | MEG | Cross | 18 min |
| May 21, 3:30 PM CDT | Areal Flood Advisory | MEG | Crittenden, Cross, St. Francis | 2 hr |
| May 21, 3:50 PM CDT | Special Weather Statement | MEG | St. Francis | 25 min |
Nearby
Special Weather Statements in Arkansas, 2018Every special weather statement 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.