Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 145, NWS Shreveport, LA
NWS Shreveport, LA issued this severe thunderstorm warning at May 10, 2021, 9:12 PM CDT for McCurtain County, Oklahoma. 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 10, 2021, 9:12 PM CDT (02:12 UTC)
- Expired
- May 10, 2021, 9:50 PM CDT
- In force
- 38 min
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
County McCurtain County, OK
The radar
The Western Arkansas radar (KSRX), 113 km from the middle of the area, began a volume at 02:14 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
Shreveport, LA (KSHV), launched 00:00Z, 2.2 hours before the alert went out and 220 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
- 474 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 96 m²/s²
- 0-3 km storm-relative helicity
- 173 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
860 WUUS54 KSHV 110212 SVRSHV OKC089-110315- /O.NEW.KSHV.SV.W.0145.210511T0212Z-210511T0315Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Shreveport LA 912 PM CDT Mon May 10 2021 The National Weather Service in Shreveport has issued a * Severe Thunderstorm Warning for... Northeastern McCurtain County in southeastern Oklahoma... * Until 1015 PM CDT. * At 911 PM CDT, a severe thunderstorm was located 14 miles northwest of Broken Bow, or 31 miles west of De Queen, moving east at 45 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. * Locations impacted include... Hochatown, Plunketville, Watson, Mount Herman and Sherwood. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 3448 9447 3419 9447 3410 9491 3427 9497 TIME...MOT...LOC 0211Z 252DEG 40KT 3422 9486 HAIL...1.00IN WIND...<50MPH $$ 33
1 follow-up statement
868
WWUS54 KSHV 110250
SVSSHV
Severe Weather Statement
National Weather Service Shreveport LA
950 PM CDT Mon May 10 2021
OKC089-110300-
/O.CAN.KSHV.SV.W.0145.000000T0000Z-210511T0315Z/
McCurtain OK-
950 PM CDT Mon May 10 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MCCURTAIN COUNTY
IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.
LAT...LON 3448 9447 3419 9447 3410 9491 3427 9497
TIME...MOT...LOC 0249Z 252DEG 40KT 3435 9436
$$
33The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 10, 8:59 PM CDT | Special Weather Statement | SHV | McCurtain | 46 min |
| May 10, 9:29 PM CDT | Severe Thunderstorm Warning | SHV | McCurtain | 46 min |
| May 10, 9:56 PM CDT | Severe Thunderstorm Warning | SHV | McCurtain | 49 min |
| May 11, 1:28 PM CDT | Special Weather Statement | SHV | McCurtain | 47 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2021Every severe thunderstorm warning in 2021
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.