Alert archive / Nebraska / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 103, NWS Hastings, NE

May 20, 2024Polk County, York County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at May 20, 2024, 7:00 PM CDT for Polk County, York County, Nebraska. It was in force for 24 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 20, 2024, 7:00 PM CDT (00:00 UTC)
Expired
May 20, 2024, 7:24 PM CDT
In force
24 min
Issued by
NWS Hastings, NE
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

Counties Polk County, NE, York County, NE

The radar

The Omaha radar (KOAX), 107 km from the middle of the area, began a volume at 00:03 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 20, 6:31 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 0.0 hours before the alert went out and 106 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, Omaha, NE at 00:00Z on 2024-05-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1458 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, Omaha, NE at 00:00Z on 2024-05-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 square meters per square second.193958Sfc1 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
1458 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
1666 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
55 m²/s²
Significant tornado parameter
0.1
Supercell composite
2.3

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Hastings, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at May 20, 5:07 PM CDT, 1 hour 53 minutes earlier.

Area forecast discussion, May 20, 5:07 PM CDT, 1 hour 53 minutes before
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Hazardous weather outlook, May 20, 4:12 PM CDT, 2 hours 48 minutes before
Hazardous Weather Outlook
National Weather Service Hastings NE
412 PM CDT Mon May 20 2024

KSZ005>007-017>019-NEZ039>041-046>049-060>064-072>077-082>087-
212115-
Phillips-Smith-Jewell-Rooks-Osborne-Mitchell-Valley-Greeley-Nance-
Sherman-Howard-Merrick-Polk-Dawson-Buffalo-Hall-Hamilton-York-
Gosper-Phelps-Kearney-Adams-Clay-Fillmore-Furnas-Harlan-Franklin-
Webster-Nuckolls-Thayer-
412 PM CDT Mon May 20 2024

This Hazardous Weather Outlook is for south central Nebraska and
portions of north central Kansas.

.DAY ONE...This Evening and Tonight.

Starting mainly after 7 PM, and then lasting well into the
overnight and early Tuesday morning hours, thunderstorm chances
will be on the increase, with the greatest likelihood and coverage
of storms focused within Nebraska counties, and lower chances in
north central Kansas. Some of these storms will develop directly
over our area, while others roll in from the west, either in the
form of intense, individual storms or perhaps as a larger-scale
line or complex.

Some storms this evening and overnight will likely be severe, and
most of the area is under at least a Slight Risk for severe
storms, with several Nebraska counties west of Highway 281
assigned a more concerning Enhanced Risk. The primary threats
with any severe storms will be damaging winds up to around
70 MPH, and large hail up to around golf ball size. However, there
could also be a low chance for tornado development, particularly
with any individual supercell storms.

In addition, much of especially our Nebraska coverage area will
likely receive widespread rainfall between 1 and 3 inches
overnight, with localized higher amounts possible in narrow
swaths, although it is not yet clear exactly where these might be.
A Flood Watch has been issued for most Nebraska counties along and
north of Highway 6 where the heaviest rain appears most favored,
but some counties just south of the Watch area could also see at
least localized heavy rain and possible flooding or flash
flooding. Please refer to the Watch statement for more details.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

On Tuesday daytime, mainly between 9 AM and and 1 PM, one final
round of strong to potentially severe thunderstorms could sweep
across parts of the area from west to east, again favoring
Nebraska counties more so than Kansas. Most of our area is under a
Marginal to Slight Risk for severe storms, with the higher concern
focused mainly along and east of Highway 281. The main hazards with
any severe storms would be hail up to around the size of ping
pong balls, and damaging winds up to around 60 MPH...in addition
to the continued chance for more heavy rain and localized
flooding...and the Flood Watch for much of our Nebraska area
remains in effect until 1 PM. After 1 PM, any risk for severe
storms and heavy rain will have departed east of our area.

Between late Wednesday night and Sunday, there are various,
intermittent chances for thunderstorms in the forecast. Severe
storms are not currently expected with most of these chances, but
early indications suggest that Thursday evening or overnight could
bear watching for a possible, limited threat.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report any instances of severe weather
or potential flooding this evening and overnight.

&&

More information may be obtained at the following web page:
   https://www.weather.gov/hastings

Pfannkuch

In the hours before

Special weather statement, May 20, 6:12 PM CDT, 48 minutes before
Special Weather Statement
National Weather Service Hastings NE
612 PM CDT Mon May 20 2024

NEZ061-062-074-075-202345-
Buffalo NE-Adams NE-Hall NE-Kearney NE-
612 PM CDT Mon May 20 2024

...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN ADAMS...
NORTHEASTERN KEARNEY...SOUTHEASTERN BUFFALO AND SOUTHERN HALL
COUNTIES THROUGH 645 PM CDT...

At 611 PM CDT, Doppler radar was tracking a strong thunderstorm near
Shelton, or 18 miles northwest of Hastings, moving northeast at 25
mph.

HAZARD...Wind gusts up to 40 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

This strong thunderstorm will be near...
  Wood River around 620 PM CDT.

This includes Interstate 80 between mile markers 288 and 312.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4065 9879 4083 9886 4096 9843 4070 9833
TIME...MOT...LOC 2311Z 245DEG 21KT 4074 9870

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH

Thies
Special weather statement, May 20, 6:13 PM CDT, 47 minutes before
Special Weather Statement
National Weather Service Hastings NE
613 PM CDT Mon May 20 2024

NEZ048-062-063-202345-
Merrick NE-Hamilton NE-Hall NE-
613 PM CDT Mon May 20 2024

...A STRONG THUNDERSTORM WILL IMPACT WEST CENTRAL HAMILTON...
SOUTHWESTERN MERRICK AND NORTHEASTERN HALL COUNTIES THROUGH 645 PM
CDT...

At 613 PM CDT, Doppler radar was tracking a strong thunderstorm near
Grand Island, moving northeast at 20 mph.

HAZARD...Wind gusts up to 40 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

This strong thunderstorm will be near...
  Chapman around 630 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4089 9843 4101 9846 4105 9834 4105 9829
      4106 9829 4111 9814 4088 9801
TIME...MOT...LOC 2313Z 245DEG 19KT 4095 9832

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH

Thies
Special weather statement, May 20, 6:44 PM CDT, 16 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 20, 7:14 PM CDTSevere Thunderstorm WarningGIDHall, Hamilton46 min
May 20, 7:30 PM CDTSpecial Weather StatementGIDMerrick30 min
May 20, 7:38 PM CDTSpecial Weather StatementGIDBuffalo52 min
May 20, 7:41 PM CDTSpecial Weather StatementGIDPolk49 min
May 20, 7:42 PM CDTSpecial Weather StatementGIDBuffalo33 min
May 20, 7:56 PM CDTSevere Thunderstorm Warning Considerable damage threatGIDHall, Hamilton, Merrick49 min
May 20, 7:57 PM CDTSevere Thunderstorm WarningGIDBuffalo, Dawson18 min
May 20, 8:55 PM CDTSpecial Weather StatementGIDHall50 min
May 20, 9:46 PM CDTSpecial Weather StatementGIDHall29 min
May 20, 11:00 PM CDTSpecial Weather StatementGIDValley30 min
May 20, 11:12 PM CDTSevere Thunderstorm WarningGIDSherman, Valley48 min
May 21, 1:10 AM CDTSpecial Weather StatementGIDHall35 min
May 21, 1:38 AM CDTSpecial Weather StatementGIDPolk37 min
May 21, 1:42 AM CDTSevere Thunderstorm WarningGIDPolk33 min
May 21, 1:54 AM CDTAreal Flood AdvisoryGIDHall, Hamilton, Merrick8 hr
May 21, 1:54 AM CDTSpecial Weather StatementGIDDawson36 min
May 21, 2:04 AM CDTSevere Thunderstorm WarningGIDBuffalo, Dawson, Gosper41 min
May 21, 2:19 AM CDTSpecial Weather StatementGIDHall, Hamilton, Merrick, Polk, York41 min
May 21, 2:22 AM CDTSevere Thunderstorm WarningGIDFurnas, Gosper, Harlan, Phelps53 min
May 21, 2:47 AM CDTSpecial Weather StatementGIDBuffalo43 min
May 21, 2:51 AM CDTSevere Thunderstorm WarningGIDDawson, Gosper, Phelps39 min
May 21, 2:54 AM CDTAreal Flood AdvisoryGIDPolk, York6 hr
May 21, 3:22 AM CDTSpecial Weather StatementGIDBuffalo, Franklin, Harlan, Kearney, Phelps38 min
May 21, 3:32 AM CDTSpecial Weather StatementGIDHall, Howard, Sherman28 min
May 21, 3:59 AM CDTSpecial Weather StatementGIDGreeley, Howard, Merrick, Nance31 min
May 21, 4:02 AM CDTSpecial Weather StatementGIDAdams, Clay, Hall, Webster28 min
May 21, 4:24 AM CDTSpecial Weather StatementGIDBuffalo, Dawson, Sherman, Valley51 min
May 21, 4:30 AM CDTSpecial Weather StatementGIDClay, Fillmore, Hamilton, Merrick, Nance, Nuckolls and 3 more45 min
May 21, 4:33 AM CDTSevere Thunderstorm WarningGIDHamilton, Merrick, Nance, Polk, York27 min
May 21, 5:14 AM CDTSpecial Weather StatementGIDThayer16 min
May 21, 10:43 AM CDTSevere Thunderstorm WarningGIDClay, Fillmore, York47 min
May 21, 11:27 AM CDTSevere Thunderstorm WarningGIDYork18 min
May 21, 11:40 AM CDTSpecial Weather StatementGIDPolk35 min
May 21, 3:43 AM CDTSpecial Weather StatementGIDSmith17 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2024Every severe thunderstorm warning in 2024

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.