Alert archive / Arkansas / Special Weather Statements in 2011

Special Weather Statement, NWS Little Rock, AR

August 7, 2011Saline County, Arkansas

NWS Little Rock, AR issued this special weather statement at Aug 7, 2011, 2:00 PM CDT for Saline County, 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 outline as issued.

The facts

Issued
Aug 7, 2011, 2:00 PM CDT (19:00 UTC)
Expired
Aug 7, 2011, 2:45 PM CDT
In force
45 min
Issued by
NWS Little Rock, AR

County Saline County, AR

The radar

The Little Rock radar (KLZK), 48 km from the middle of the area, began a volume at 19:01 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 (KLZK), launched 12:00Z, 7.0 hours before the alert went out and 242 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, Little Rock, AR at 12:00Z on 2011-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2280 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, Little Rock, AR at 12:00Z on 2011-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 99 square meters per square second.1939Sfc1 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
2280 J/kg
Mixed-layer CIN
-140 J/kg
Mixed-layer LCL
1283 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
99 m²/s²
0-3 km storm-relative helicity
122 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Aug 7, 1:02 PM CDT, 58 minutes earlier.

Area forecast discussion, Aug 7, 1:02 PM CDT, 58 minutes before
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Hazardous weather outlook, Aug 7, 4:15 AM CDT, 9 hours 45 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LITTLE ROCK AR
415 AM CDT SUN AUG 7 2011

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-081000-
ARKANSAS-BAXTER-BOONE-BRADLEY-CALHOUN-CLARK-CLEBURNE-CLEVELAND-
CONWAY-DALLAS-DESHA-DREW-FAULKNER-FULTON-GARLAND-GRANT-HOT SPRING-
INDEPENDENCE-IZARD-JACKSON-JEFFERSON-JOHNSON-LINCOLN-LOGAN-LONOKE-
MARION-MONROE-MONTGOMERY-NEWTON-OUACHITA-PERRY-PIKE-POLK-POPE-
PRAIRIE-PULASKI-SALINE-SCOTT-SEARCY-SHARP-STONE-VAN BUREN-WHITE-
WOODRUFF-YELL-
415 AM CDT SUN AUG 7 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR A LARGE PART OF ARKANSAS.

.DAY ONE...TODAY AND TONIGHT

DANGEROUS HEAT WILL AGAIN PERSIST FOR TODAY AS HIGH TEMPERATURES
WARM TO THE UPPER 90S TO AROUND 107 ACROSS THE AREA. HUMIDITY
LEVELS WILL ALSO REMAIN HIGH...WITH HEAT INDICES EXPECTED TO TO
RANGE FROM 105 TO 114 DEGREES FOR MANY LOCATIONS.

A HEAT ADVISORY REMAINS IN EFFECT FOR TODAY. PEOPLE NEED TO TAKE THE
HEAT SERIOUSLY. HEAT IS THE NUMBER ONE WEATHER RELATED KILLER IN THE
UNITED STATES.

SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE THIS AFTERNOON. ANY
STORM THAT DOES FORM COULD BECOME STRONG TO SEVERE...WITH DAMAGING
WINDS THE MAIN THREAT. THE BEST CHANCES FOR STORMS WILL BE ACROSS
THE NORTHEAST HALF OF THE STATE...THOUGH ISOLATED STORMS COULD
FORM FURTHER SOUTH.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

A HEAT ADVISORY WILL REMAIN IN EFFECT FOR A LARGE PORTION OF
THE AREA ON MONDAY AS TEMPERATURES REMAIN IN THE UPPER 90S TO
AROUND 106...AND AFTERNOON HEAT INDICES RANGE FROM 105 TO 114
DEGREES.

THE UPPER LEVEL HIGH PRESSURE RESPONSIBLE FOR THE EXCESSIVE HEAT
OVER THE PAST SEVERAL DAYS WILL SHIFT SLOWLY SOUTHWEST IN THE
COMING DAYS. AS THIS UPPER LEVEL HIGH SHIFTS SOUTHWEST... A COLD
FRONT WILL SLIDE SOUTH INTO ARKANSAS BY THE MIDDLE OF NEXT WEEK
AND STALL. THIS WILL KEEP CHANCES FOR SCATTERED SHOWERS AND
THUNDERSTORMS IN THE FORECAST FOR AT LEAST SOME PORTION OF THE
STATE THROUGH THE END OF NEXT WEEK. AS A RESULT OF INCREASED RAIN
CHANCES...THE THREAT FOR THE EXCESSIVE HEAT WILL SLOWLY DECREASE
OVER TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.

&&

VISIT NWS LITTLE ROCK ON THE WEB. GO TO HTTP://WEATHER.GOV AND
CLICK ON CENTRAL ARKANSAS.

62

In the hours before

Special weather statement, Aug 7, 1:05 PM CDT, 55 minutes before
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Special weather statement, Aug 7, 1:10 PM CDT, 50 minutes before
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Special weather statement, Aug 7, 1:14 PM CDT, 46 minutes before
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Local storm report, Aug 7, 1:53 PM CDT, 7 minutes before
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Special weather statement, Aug 7, 2:00 PM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 6, 8:19 PM CDTSevere Thunderstorm WarningLZKBoone, Marion26 min
Aug 6, 8:46 PM CDTSevere Thunderstorm WarningLZKBoone, Marion44 min
Aug 6, 8:48 PM CDTSevere Thunderstorm WarningLZKFulton42 min
Aug 6, 9:15 PM CDTSevere Thunderstorm WarningLZKIzard, Sharp25 min
Aug 7, 1:05 PM CDTSpecial Weather StatementLZKPulaski45 min
Aug 7, 1:07 PM CDTSevere Thunderstorm WarningLZKPulaski38 min
Aug 7, 1:10 PM CDTSpecial Weather StatementLZKSaline30 min
Aug 7, 1:14 PM CDTSpecial Weather StatementLZKHot Spring46 min
Aug 7, 1:34 PM CDTSevere Thunderstorm WarningLZKPulaski41 min
Aug 7, 1:39 PM CDTSevere Thunderstorm WarningLZKPulaski, Saline36 min
Aug 7, 1:57 PM CDTSevere Thunderstorm WarningLZKLonoke, Pulaski48 min
Aug 7, 2:03 PM CDTSpecial Weather StatementLZKHot Spring47 min
Aug 7, 2:05 PM CDTSevere Thunderstorm WarningLZKGrant, Saline40 min
Aug 7, 2:16 PM CDTSpecial Weather StatementLZKLonoke44 min
Aug 7, 2:22 PM CDTSevere Thunderstorm WarningLZKLonoke53 min
Aug 7, 2:23 PM CDTSevere Thunderstorm WarningLZKCleburne, Independence, Stone37 min
Aug 7, 2:30 PM CDTSevere Thunderstorm WarningLZKJefferson, Lonoke, Pulaski45 min
Aug 7, 2:57 PM CDTSpecial Weather StatementLZKPulaski43 min
Aug 7, 3:03 PM CDTSevere Thunderstorm WarningLZKGrant, Jefferson, Saline16 min
Aug 7, 3:22 PM CDTSevere Thunderstorm WarningLZKCleburne, Independence, Stone38 min
Aug 7, 3:32 PM CDTSevere Thunderstorm WarningLZKIndependence, Jackson28 min
Aug 7, 3:44 PM CDTSpecial Weather StatementLZKJefferson46 min
Aug 7, 3:59 PM CDTSevere Thunderstorm WarningLZKJackson, Woodruff46 min
Aug 7, 4:12 PM CDTSevere Thunderstorm WarningLZKDesha, Drew, Lincoln48 min
Aug 7, 4:14 PM CDTSevere Thunderstorm WarningLZKArkansas, Jefferson34 min
Aug 7, 4:24 PM CDTSevere Thunderstorm WarningLZKWhite, Woodruff31 min
Aug 7, 4:52 PM CDTSpecial Weather StatementLZKClark, Cleveland, Dallas, Lincoln43 min
Aug 7, 5:16 PM CDTSevere Thunderstorm WarningLZKWoodruff29 min
Aug 7, 5:20 PM CDTSevere Thunderstorm WarningLZKBradley, Drew26 min
Aug 7, 5:28 PM CDTSevere Thunderstorm WarningLZKDallas32 min
Aug 7, 5:40 PM CDTSevere Thunderstorm WarningLZKMontgomery, Polk50 min

Nearby

Special Weather Statements in Arkansas, 2011Every special weather statement 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.