Alert archive / Arkansas / Heat Advisories in 2021
Heat Advisory 5, NWS Little Rock, AR
NWS Little Rock, AR issued this heat advisory at Jul 28, 2021, 2:34 PM CDT for 10 counties in Arkansas. It took effect at Jul 29, 2021, 12:00 PM CDT. It was in force for 32 hr.
The area
The counties it named.
The facts
- Issued
- Jul 28, 2021, 2:34 PM CDT (19:34 UTC)
- In effect from
- Jul 29, 2021, 12:00 PM CDT
- Expired
- Jul 30, 2021, 8:00 PM CDT
- In force
- 32 hr
- Issued by
- NWS Little Rock, AR
Counties Baxter County, AR, Fulton County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Lawrence County, AR, Marion County, AR, Randolph County, AR, Sharp County, AR, Stone County, AR
The radar
The Little Rock radar (KLZK), 146 km from the middle of the area, began a volume at 19:34 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
Springfield, MO (KSGF), launched 12:00Z, 7.6 hours before the alert went out and 206 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
- 2455 J/kg
- Mixed-layer CIN
- -70 J/kg
- Mixed-layer LCL
- 1061 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 53 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
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.