Alert archive / Arkansas / Heat Advisories in 2021
Heat Advisory 7, NWS Little Rock, AR
NWS Little Rock, AR issued this heat advisory at Jul 31, 2021, 2:53 PM CDT for 11 counties in Arkansas. It took effect at Aug 1, 2021, 1:00 PM CDT. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Jul 31, 2021, 2:53 PM CDT (19:53 UTC)
- In effect from
- Aug 1, 2021, 1:00 PM CDT
- Expired
- Aug 1, 2021, 7:00 PM CDT
- In force
- 6 hr
- Issued by
- NWS Little Rock, AR
Counties Bradley County, AR, Calhoun County, AR, Clark County, AR, Cleveland County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Hot Spring County, AR, Lincoln County, AR, Ouachita County, AR, Pike County, AR
The radar
The Little Rock radar (KLZK), 110 km from the middle of the area, began a volume at 19:51 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
Jackson, MS (KJAN), launched 12:00Z, 7.9 hours before the alert went out and 278 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
- 842 J/kg
- Mixed-layer CIN
- -108 J/kg
- Mixed-layer LCL
- 1341 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- -5 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this heat advisory 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 heat advisory went out at Jul 31, 2:38 PM CDT, 15 minutes earlier.
Area forecast discussion, Jul 31, 2:38 PM CDT, 15 minutes before
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</html>Hazardous weather outlook, Jul 31, 2:17 PM CDT, 36 minutes before
Hazardous Weather Outlook National Weather Service Little Rock AR 217 PM CDT Sat Jul 31 2021 ARZ003>008-012>017-021>025-030>034-037>047-052>057-062>069-011000- Boone-Marion-Baxter-Fulton-Sharp-Randolph-Newton-Searcy-Stone- Izard-Independence-Lawrence-Johnson-Pope-Van Buren-Cleburne- Jackson-Logan-Conway-Faulkner-White-Woodruff-Scott-Yell-Perry- Polk-Montgomery-Garland-Saline-Pulaski-Lonoke-Prairie-Monroe-Pike- Clark-Hot Spring-Grant-Jefferson-Arkansas-Dallas-Cleveland- Lincoln-Desha-Ouachita-Calhoun-Bradley-Drew- 307 AM CDT Sat Jul 31 2021 This Hazardous Weather Outlook is for a Large Part of Arkansas. .DAY ONE...Today and Tonight Heat index values remain above 100 to 105 degrees at most locations Saturday afternoon, with the potential for some locations to reach 110 degrees. Expect these heat index values to drop below 105 degrees by this evening. Isolated to scattered thunderstorms remain possible over the north and northeast portions of the state this evening through the overnight hours. While a strong storm could be seen...the overall threat for seeing severe weather is low. Some gusty winds and locally heavy rainfall will be possible with the strongest storms. .DAYS TWO THROUGH SEVEN...Sunday Through Friday A cold front will enter northern Arkansas early Sunday morning into early Monday. Thunderstorm chances will increase across northern Arkansas through Sunday morning...with coverage of rain chances shifting south to the central and southern portions of the state Sunday night through Monday. For now...the overall threat for severe weather is low...but an isolated strong storm will still be possible. Beyond Monday...the threat for hazardous weather will become low. .Spotter Information Statement... Spotter activation will not be needed. && Visit NWS Little Rock on the web. Go to http://weather.gov/lzk. 232/234
Nearby
Heat Advisories in Arkansas, 2021Every heat advisory in 2021
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.