Alert archive / Arkansas / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 721, NWS Little Rock, AR
NWS Little Rock, AR issued this severe thunderstorm warning at Jul 30, 2011, 3:09 PM CDT for White County, Arkansas. It was in force for 36 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 30, 2011, 3:09 PM CDT (20:09 UTC)
- Expired
- Jul 30, 2011, 3:45 PM CDT
- In force
- 36 min
- Issued by
- NWS Little Rock, AR
- Area
- Storm-based polygon
County White County, AR
The radar
The Little Rock radar (KLZK), 77 km from the middle of the area, began a volume at 20:08 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 30, 3:21 PM CDT | TSTM WND DMG | Plainview, AR | SEVERAL LARGE TREES HAVE BEEN DOWNED ACROSS PLAINVIEW. |
| Jul 30, 3:21 PM CDT | HAIL 1 | Plainview, AR |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Little Rock, AR (KLZK), launched 12:00Z, 8.2 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
- 1865 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 756 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 47 m²/s²
- 0-3 km storm-relative helicity
- 61 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
175
WUUS54 KLZK 302009
SVRLZK
ARC145-302045-
/O.NEW.KLZK.SV.W.0721.110730T2009Z-110730T2045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LITTLE ROCK AR
309 PM CDT SAT JUL 30 2011
THE NATIONAL WEATHER SERVICE IN LITTLE ROCK HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CENTRAL WHITE COUNTY IN CENTRAL ARKANSAS...
* UNTIL 345 PM CDT
* AT 304 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
KENSETT...OR 3 MILES EAST OF SEARCY...AND MOVING EAST AT 15 MPH.
* LOCATIONS IMPACTED INCLUDE...
SEARCY... WEST POINT... KENSETT...
JUDSONIA... HIGGINSON... BALD KNOB...
WORDEN... VELVET RIDGE... PROVIDENCE...
WRIGHTS CORNER... STEVENS CREEK... NIMMO...
LIBERTY VALLEY... LAKE BALD KNOB... KIWANIS PARK...
DONIPHAN... BALD KNOB WILDLIFE REFUGE...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.
&&
LAT...LON 3519 9173 3536 9177 3545 9158 3544 9156
3518 9146
TIME...MOT...LOC 2009Z 264DEG 11KT 3526 9167
$$
2272 follow-up statements
989 WWUS54 KLZK 302036 SVSLZK SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE LITTLE ROCK AR 336 PM CDT SAT JUL 30 2011 ARC145-302045- /O.CON.KLZK.SV.W.0721.000000T0000Z-110730T2045Z/ WHITE AR- 336 PM CDT SAT JUL 30 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL WHITE COUNTY UNTIL 345 PM CDT... AT 334 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR JUDSONIA...OR 7 MILES NORTHEAST OF SEARCY...MOVING SOUTHEAST AT 10 MPH. QUARTER SIZED HAIL AND SEVERAL TREES HAVE BEEN DOWNED BY THIS STORM. PLEASE CONTINUE TO MONITOR THE SITUATION CLOSELY. * LOCATIONS IN THE PATH OF THIS SEVERE THUNDERSTORM INCLUDE... JUDSONIA... BALD KNOB... WORDEN... WRIGHTS CORNER... STEVENS CREEK... LIBERTY VALLEY... LAKE BALD KNOB... DONIPHAN... BALD KNOB WILDLIFE REFUGE... PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. && LAT...LON 3526 9149 3524 9171 3534 9173 3542 9155 TIME...MOT...LOC 2037Z 298DEG 11KT 3528 9161 $$ 227
770 WWUS54 KLZK 302043 SVSLZK SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE LITTLE ROCK AR 343 PM CDT SAT JUL 30 2011 ARC145-302054- /O.EXP.KLZK.SV.W.0721.000000T0000Z-110730T2045Z/ WHITE AR- 343 PM CDT SAT JUL 30 2011 ...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL WHITE COUNTY WILL EXPIRE AT 345 PM CDT... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. LAT...LON 3526 9149 3524 9171 3534 9173 3542 9155 TIME...MOT...LOC 2044Z 298DEG 11KT 3527 9159 $$ 227
The office that day
Everything else NWS Little Rock, AR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 30, 1:14 PM CDT | Special Weather Statement | LZK | Lonoke | 31 min |
| Jul 30, 1:42 PM CDT | Special Weather Statement | LZK | Lonoke | 28 min |
| Jul 30, 2:56 PM CDT | Heat Advisory | LZK | Arkansas, Baxter, Bradley, Calhoun, Clark, Cleburne and 28 more | 69 hr |
| Jul 30, 3:07 PM CDT | Special Weather Statement | LZK | White | 28 min |
| Jul 30, 3:43 PM CDT | Special Weather Statement | LZK | Boone | 42 min |
| Jul 30, 4:48 PM CDT | Special Weather Statement | LZK | Newton | 47 min |
| Jul 30, 5:00 PM CDT | Severe Thunderstorm Warning | LZK | Baxter, Fulton | 28 min |
| Jul 30, 5:30 PM CDT | Special Weather Statement | LZK | Lonoke | 45 min |
| Jul 30, 5:34 PM CDT | Severe Thunderstorm Warning | LZK | Baxter, Fulton, Izard, Stone | 20 min |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.