Alert archive / Arkansas / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 63, NWS Little Rock, AR

April 17, 20194 counties in Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Apr 17, 2019, 9:45 PM CDT for 4 counties in Arkansas. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 17, 2019, 9:45 PM CDT (02:45 UTC)
Expired
Apr 17, 2019, 10:30 PM CDT
In force
45 min
Issued by
NWS Little Rock, AR
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

Counties Logan County, AR, Polk County, AR, Scott County, AR, Yell County, AR

The radar

The Western Arkansas radar (KSRX), 64 km from the middle of the area, began a volume at 02:47 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

Springfield, MO (KSGF), launched 00:00Z, 2.8 hours before the alert went out and 223 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.

Skew-T log-pSkew-T log-p diagram, Springfield, MO at 00:00Z on 2019-04-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1253 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 00:00Z on 2019-04-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 183 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1253 J/kg
Mixed-layer CIN
-143 J/kg
Mixed-layer LCL
1063 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
183 m²/s²
0-3 km storm-relative helicity
189 m²/s²
Significant tornado parameter
0.6
Supercell composite
2.6

Open this sounding in Storm Lab

The office that day

Everything else NWS Little Rock, AR issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 17, 8:23 PM CDTSpecial Weather StatementLZKJohnson37 min
Apr 17, 9:06 PM CDTSpecial Weather StatementLZKSearcy24 min
Apr 17, 9:17 PM CDTSevere Thunderstorm WarningLZKPolk, Scott28 min
Apr 17, 10:27 PM CDTSevere Thunderstorm WarningLZKLogan, Scott, Yell48 min
Apr 17, 11:10 PM CDTSpecial Weather StatementLZKNewton35 min
Apr 17, 11:12 PM CDTSevere Thunderstorm WarningLZKLogan, Scott, Yell33 min
Apr 17, 11:19 PM CDTSpecial Weather StatementLZKPolk41 min
Apr 17, 11:43 PM CDTSevere Thunderstorm WarningLZKConway, Johnson, Logan, Perry, Pope, Yell47 min
Apr 18, 12:03 AM CDTSevere Thunderstorm WarningLZKMontgomery, Polk, Yell24 min
Apr 18, 12:11 AM CDTSpecial Weather StatementLZKSearcy49 min
Apr 18, 12:28 AM CDTSevere Thunderstorm WarningLZKConway, Faulkner, Perry, Pope, Van Buren47 min
Apr 18, 12:58 AM CDTSpecial Weather StatementLZKHot Spring32 min
Apr 18, 1:09 AM CDTSpecial Weather StatementLZKDallas36 min
Apr 18, 1:21 AM CDTSpecial Weather StatementLZKCleburne, Faulkner, Stone24 min
Apr 18, 1:53 AM CDTFlash Flood WatchLZKArkansas, Bradley, Calhoun, Clark, Cleburne, Cleveland and 27 more17 hr
Apr 18, 2:06 AM CDTSpecial Weather StatementLZKLonoke24 min
Apr 18, 2:17 AM CDTSpecial Weather StatementLZKDallas28 min
Apr 18, 3:50 AM CDTFlash Flood WarningLZKFaulkner, Lonoke, Pulaski, Saline5 hr
Apr 18, 4:30 AM CDTFlash Flood WarningLZKClark, Dallas, Grant, Hot Spring, Ouachita, Pulaski and 1 more3 hr
Apr 18, 5:32 AM CDTFlash Flood WarningLZKArkansas, Lonoke, Monroe, Prairie, Woodruff3 hr
Apr 18, 8:04 AM CDTRiver Flood WarningLZKSaline27 hr
Apr 18, 8:42 AM CDTAreal Flood AdvisoryLZKFaulkner, Lonoke, Pulaski, Saline4 hr
Apr 18, 8:45 AM CDTRiver Flood WarningLZKClark, Hot Spring26 hr
Apr 18, 8:47 AM CDTRiver Flood WarningLZKAshley, Bradley, Cleveland, Drew26 hr
Apr 18, 8:48 AM CDTRiver Flood WarningLZKClark, Nevada, Ouachita26 hr
Apr 18, 8:49 AM CDTRiver Flood WarningLZKYell59 hr
Apr 18, 8:50 AM CDTRiver Flood WarningLZKPerry3 days
Apr 18, 10:15 AM CDTRiver Flood WarningLZKPrairie, White, Woodruff10 days
Apr 18, 10:15 AM CDTRiver Flood WarningLZKPrairie9 days
Apr 18, 10:17 AM CDTRiver Flood WarningLZKRandolph31 days

Nearby

Severe Thunderstorm Warnings in Arkansas, 2019Every severe thunderstorm warning in 2019

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.