Alert archive / Arkansas / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 97, NWS Little Rock, AR
NWS Little Rock, AR issued this severe thunderstorm warning at Apr 21, 2017, 11:42 PM CDT for 4 counties in Arkansas. It was in force for 48 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 21, 2017, 11:42 PM CDT (04:42 UTC)
- Expired
- Apr 22, 2017, 12:30 AM CDT
- In force
- 48 min
- Issued by
- NWS Little Rock, AR
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Arkansas County, AR, Jefferson County, AR, Lonoke County, AR, Prairie County, AR
The radar
The Little Rock radar (KLZK), 62 km from the middle of the area, began a volume at 04:43 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, 4.7 hours before the alert went out and 162 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
- 889 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 171 m²/s²
- 0-3 km storm-relative helicity
- 312 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Local storm report, Apr 21, 10:05 PM CDT, 1 hour 37 minutes before
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</html>Special weather statement, Apr 21, 10:07 PM CDT, 1 hour 35 minutes before
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<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
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Please try again in a few minutes.
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</html>The office that day
Everything else NWS Little Rock, AR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 21, 9:07 PM CDT | Severe Thunderstorm Warning | LZK | Baxter, Marion, Searcy | 38 min |
| Apr 21, 9:36 PM CDT | Severe Thunderstorm Warning | LZK | Baxter, Izard, Stone | 39 min |
| Apr 21, 10:06 PM CDT | Severe Thunderstorm Warning | LZK | Izard, Sharp | 39 min |
| Apr 21, 10:07 PM CDT | Special Weather Statement | LZK | Polk | 38 min |
| Apr 21, 10:30 PM CDT | Severe Thunderstorm Warning | LZK | Polk, Scott | 45 min |
| Apr 21, 11:30 PM CDT | Special Weather Statement | LZK | Lonoke | 45 min |
| Apr 21, 11:47 PM CDT | Special Weather Statement | LZK | White | 43 min |
| Apr 21, 11:47 PM CDT | Severe Thunderstorm Warning | LZK | Clark, Garland, Hot Spring, Montgomery, Pike | 32 min |
| Apr 22, 12:32 AM CDT | Special Weather Statement | LZK | Monroe | 28 min |
| Apr 22, 12:36 AM CDT | Special Weather Statement | LZK | White | 39 min |
| Apr 22, 12:48 AM CDT | Special Weather Statement | LZK | Grant, Hot Spring, Saline | 42 min |
| Apr 22, 1:33 AM CDT | Special Weather Statement | LZK | Grant, Jefferson | 42 min |
| Apr 22, 2:17 AM CDT | Special Weather Statement | LZK | Arkansas, Cleveland, Jefferson, Lincoln | 43 min |
| Apr 22, 2:48 AM CDT | Severe Thunderstorm Warning | LZK | Arkansas, Cleveland, Desha, Jefferson, Lincoln | 42 min |
| Apr 22, 3:29 AM CDT | Special Weather Statement | LZK | Desha | 46 min |
| Apr 22, 9:32 AM CDT | River Flood Advisory | LZK | Searcy | 24 hr |
| Apr 22, 10:09 AM CDT | River Flood Warning | LZK | Randolph | 32 days |
| Apr 22, 10:22 AM CDT | River Flood Warning | LZK | White, Woodruff | 60 days |
Nearby
Severe Thunderstorm Warnings in Arkansas, 2017Every severe thunderstorm warning in 2017
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.