Alert archive / Arkansas / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 481, NWS Little Rock, AR
NWS Little Rock, AR issued this severe thunderstorm warning at May 23, 2011, 11:45 PM CDT for 5 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
- May 23, 2011, 11:45 PM CDT (04:45 UTC)
- Expired
- May 24, 2011, 12:30 AM CDT
- In force
- 45 min
- Issued by
- NWS Little Rock, AR
- Area
- Storm-based polygon
Counties Garland County, AR, Hot Spring County, AR, Montgomery County, AR, Perry County, AR, Saline County, AR
The radar
The Little Rock radar (KLZK), 78 km from the middle of the area, began a volume at 04:45 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 |
|---|---|---|---|
| May 23, 9:42 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 4.8 hours before the alert went out and 263 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
- 23 J/kg
- Mixed-layer CIN
- -417 J/kg
- Mixed-layer LCL
- 1542 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- -138 m²/s²
- 0-3 km storm-relative helicity
- -19 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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.
NWS Little Rock, AR wrote its last area forecast discussion before this severe thunderstorm warning went out at May 23, 9:08 PM CDT, 2 hours 37 minutes earlier.
Area forecast discussion, May 23, 9:08 PM CDT, 2 hours 37 minutes before
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Special weather statement, May 23, 11:31 PM CDT, 14 minutes before
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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 |
|---|---|---|---|---|
| May 23, 9:57 PM CDT | Severe Thunderstorm Warning | LZK | Johnson, Logan, Montgomery, Pope, Scott, Yell | 63 min |
| May 23, 10:08 PM CDT | River Flood Advisory | LZK | White | 36 hr |
| May 23, 10:52 PM CDT | Severe Thunderstorm Warning | LZK | Conway, Garland, Johnson, Logan, Perry, Pope and 3 more | 38 min |
| May 23, 11:05 PM CDT | Severe Thunderstorm Warning | LZK | Polk, Scott | 40 min |
| May 23, 11:31 PM CDT | Special Weather Statement | LZK | Conway, Faulkner, Perry, Pope, Saline, Van Buren | 44 min |
| May 23, 11:34 PM CDT | Flash Flood Warning | LZK | Garland, Montgomery, Polk, Scott, Yell | 3 hr |
| May 23, 11:48 PM CDT | Severe Thunderstorm Warning | LZK | Cleburne, Conway, Faulkner, Lonoke, Perry, Pope and 4 more | 42 min |
| May 24, 12:28 AM CDT | Severe Thunderstorm Warning | LZK | Clark, Dallas, Garland, Grant, Hot Spring, Lonoke and 3 more | 47 min |
| May 24, 2:46 AM CDT | Special Weather Statement | LZK | Jefferson | 44 min |
| May 24, 8:28 AM CDT | Flash Flood Warning | LZK | Hot Spring | 71 min |
| May 24, 8:37 AM CDT | River Flood Advisory | LZK | Franklin, Johnson, Logan | 36 hr |
| May 24, 8:37 AM CDT | River Flood Advisory | LZK | Conway, Perry | 36 hr |
| May 24, 8:39 AM CDT | River Flood Warning | LZK | Yell | 36 hr |
| May 24, 11:51 AM CDT | Flash Flood Warning | LZK | Baxter, Marion | 6 hr |
| May 24, 4:21 PM CDT | River Flood Warning | LZK | Perry | 47 hr |
Nearby
Severe Thunderstorm Warnings in Arkansas, 2011Every severe thunderstorm warning in 2011
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.