Alert archive / Nebraska / Heat Advisories in 2021

Heat Advisory 3, NWS North Platte, NE

June 22, 202120 counties in Nebraska

NWS North Platte, NE issued this heat advisory at Jun 22, 2021, 2:40 PM CDT for 20 counties in Nebraska. It took effect at Jun 23, 2021, 12:00 PM CDT. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued
Jun 22, 2021, 2:40 PM CDT (19:40 UTC)
In effect from
Jun 23, 2021, 12:00 PM CDT
Expired
Jun 23, 2021, 8:00 PM CDT
In force
8 hr
Issued by
NWS North Platte, NE

Counties Blaine County, NE, Boyd County, NE, Brown County, NE, Chase County, NE, Cherry County, NE, Custer County, NE, Frontier County, NE, Garfield County, NE, Hayes County, NE, Holt County, NE, Keith County, NE, Keya Paha County, NE, Lincoln County, NE, Logan County, NE, Loup County, NE, McPherson County, NE, Perkins County, NE, Rock County, NE, Thomas County, NE, Wheeler County, NE

The radar

The North Platte radar (KLNX), 42 km from the middle of the area, began a volume at 19:42 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

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 7.7 hours before the alert went out and 74 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, N. Platte/Lee Bi, NE at 12:00Z on 2021-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 12:00Z on 2021-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 182 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1672 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
182 m²/s²
0-3 km storm-relative helicity
181 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

589 
WWUS73 KLBF 221940
NPWLBF

URGENT - WEATHER MESSAGE
National Weather Service North Platte NE
240 PM CDT Tue Jun 22 2021

NEZ005>010-025>029-036>038-057>059-069>071-230900-
/O.NEW.KLBF.HT.Y.0003.210623T1700Z-210624T0100Z/
Eastern Cherry-Keya Paha-Boyd-Brown-Rock-Holt-Thomas-Blaine-Loup-
Garfield-Wheeler-McPherson-Logan-Custer-Keith-Perkins-Lincoln-
Chase-Hayes-Frontier-
Including the cities of Valentine, Springview, Spencer, Butte, 
Lynch, Ainsworth, Bassett, Rose, Oneill, Atkinson, Thedford, 
Halsey, Dunning, Purdum, Brewster, Taylor, Burwell, Bartlett, 
Ericson, Tryon, Ringgold, Stapleton, Broken Bow, Ogallala, 
Paxton, Grant, North Platte, Champion, Enders, Imperial, Wauneta,
Hayes Center, Curtis, Eustis, and Maywood
240 PM CDT Tue Jun 22 2021 /140 PM MDT Tue Jun 22 2021/

...HEAT ADVISORY IN EFFECT FROM NOON CDT /11 AM MDT/ TO 8 PM CDT
/7 PM MDT/ WEDNESDAY...

* WHAT...Heat index values up to 100 to 105 expected.

* WHERE...Portions of central, north central, southwest and west 
  central Nebraska.

* WHEN...From noon CDT /11 AM MDT/ to 8 PM CDT /7 PM MDT/ 
  Wednesday.

* IMPACTS...Hot temperatures and high humidity may cause heat 
  illnesses to occur.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$
3 follow-up statements
841 
WWUS73 KLBF 230821
NPWLBF

URGENT - WEATHER MESSAGE
National Weather Service North Platte NE
321 AM CDT Wed Jun 23 2021

NEZ005>010-025>029-036>038-057>059-069>071-232300-
/O.CON.KLBF.HT.Y.0003.210623T1700Z-210624T0100Z/
Eastern Cherry-Keya Paha-Boyd-Brown-Rock-Holt-Thomas-Blaine-Loup-
Garfield-Wheeler-McPherson-Logan-Custer-Keith-Perkins-Lincoln-
Chase-Hayes-Frontier-
Including the cities of Valentine, Springview, Spencer, Butte, 
Lynch, Ainsworth, Bassett, Rose, Oneill, Atkinson, Thedford, 
Halsey, Dunning, Purdum, Brewster, Taylor, Burwell, Bartlett, 
Ericson, Tryon, Ringgold, Stapleton, Broken Bow, Ogallala, 
Paxton, Grant, North Platte, Champion, Enders, Imperial, Wauneta,
Hayes Center, Curtis, Eustis, and Maywood
321 AM CDT Wed Jun 23 2021 /221 AM MDT Wed Jun 23 2021/

...HEAT ADVISORY REMAINS IN EFFECT FROM NOON CDT /11 AM MDT/
TODAY TO 8 PM CDT /7 PM MDT/ THIS EVENING...

* WHAT...Heat index values near or above 100 expected.

* WHERE...Portions of west central, north central, and southwest  
  Nebraska.

* WHEN...From noon CDT /11 AM MDT/ today to 8 PM CDT /7 PM MDT/ 
  this evening.

* IMPACTS...Hot temperatures and high humidity may cause heat 
  illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$
521 
WWUS73 KLBF 231954
NPWLBF

URGENT - WEATHER MESSAGE
National Weather Service North Platte NE
254 PM CDT Wed Jun 23 2021

NEZ005>010-025>029-036>038-057>059-069>071-240100-
/O.CON.KLBF.HT.Y.0003.000000T0000Z-210624T0100Z/
Eastern Cherry-Keya Paha-Boyd-Brown-Rock-Holt-Thomas-Blaine-Loup-
Garfield-Wheeler-McPherson-Logan-Custer-Keith-Perkins-Lincoln-
Chase-Hayes-Frontier-
Including the cities of Valentine, Springview, Spencer, Butte, 
Lynch, Ainsworth, Bassett, Rose, Oneill, Atkinson, Thedford, 
Halsey, Dunning, Purdum, Brewster, Taylor, Burwell, Bartlett, 
Ericson, Tryon, Ringgold, Stapleton, Broken Bow, Ogallala, 
Paxton, Grant, North Platte, Champion, Enders, Imperial, Wauneta,
Hayes Center, Curtis, Eustis, and Maywood
254 PM CDT Wed Jun 23 2021 /154 PM MDT Wed Jun 23 2021/

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT /7 PM MDT/ THIS
EVENING...

* WHAT...Heat index values near or above 100 expected.

* WHERE...Portions of west central, north central, and southwest 
  Nebraska.

* WHEN...From noon CDT /11 AM MDT/ today to 8 PM CDT /7 PM MDT/ 
  this evening.

* IMPACTS...Hot temperatures and high humidity may cause heat 
  illnesses to occur.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$
681 
WWUS73 KLBF 240103 AAA
NPWLBF

URGENT - WEATHER MESSAGE...UPDATED
National Weather Service North Platte NE
803 PM CDT Wed Jun 23 2021

NEZ005>010-025>029-036>038-057>059-069>071-240215-
/O.EXP.KLBF.HT.Y.0003.000000T0000Z-210624T0100Z/
Eastern Cherry-Keya Paha-Boyd-Brown-Rock-Holt-Thomas-Blaine-Loup-
Garfield-Wheeler-McPherson-Logan-Custer-Keith-Perkins-Lincoln-
Chase-Hayes-Frontier-
Including the cities of Valentine, Springview, Spencer, Butte, 
Lynch, Ainsworth, Bassett, Rose, Oneill, Atkinson, Thedford, 
Halsey, Dunning, Purdum, Brewster, Taylor, Burwell, Bartlett, 
Ericson, Tryon, Ringgold, Stapleton, Broken Bow, Ogallala, 
Paxton, Grant, North Platte, Champion, Enders, Imperial, Wauneta,
Hayes Center, Curtis, Eustis, and Maywood
803 PM CDT Wed Jun 23 2021 /703 PM MDT Wed Jun 23 2021/

...HEAT ADVISORY HAS EXPIRED...

The threat of hazardous heat and humidity has ended. The Heat
Advisory will be allow to expire.

$$

The office that day

Everything else NWS North Platte, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 22, 6:56 AM CDTRiver Flood AdvisoryLBFLincoln10 days

Nearby

Heat Advisories in Nebraska, 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.