Alert archive / Nebraska / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 177, NWS Hastings, NE

August 22, 2007Valley County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at Aug 22, 2007, 2:39 PM CDT for Valley County, Nebraska. It was in force for 32 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: Aug 22, 2007, 2:39 PM CDT (19:39 UTC)
Expired: Aug 22, 2007, 3:11 PM CDT
In force: 32 min
Issued by: NWS Hastings, NE
Area: Counties, with a storm outline in the text

County Valley County, NE

The radar

The North Platte radar (KLNX), 139 km from the middle of the area, began a volume at 19:40 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

Omaha, NE (KOAX), launched 12:00Z, 7.7 hours before the alert went out and 219 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1071 J/kg
Mixed-layer CIN: -277 J/kg
Mixed-layer LCL: 1229 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 128 m²/s²
0-3 km storm-relative helicity: 89 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Aug 22, 12:55 PM CDT, 1 hour 44 minutes earlier.

Area forecast discussion, Aug 22, 12:55 PM CDT, 1 hour 44 minutes before

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Hazardous weather outlook, Aug 22, 11:56 AM CDT, 2 hours 43 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE HASTINGS NE
1156 AM CDT WED AUG 22 2007

KSZ005>007-017>019-NEZ039>041-046>049-060>064-072>077-082>087-
231200-
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-
1156 AM CDT WED AUG 22 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL NEBRASKA AND
PORTIONS OF NORTH CENTRAL KANSAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

A FRONTAL BOUNDARY WILL PROVIDE THE FOCUS FOR THUNDERSTORM
DEVELOPMENT THROUGH TONIGHT. SEVERE THUNDERSTORMS ARE POSSIBLE WITH
LARGE HAIL THE SIZE OF GOLFBALLS AND 70 MPH WINDS THE PRIMARY
HAZARDS. IN ADDITION...LOCALLY HEAVY RAINFALL IN EXCESS OF TWO
INCHES MAY CAUSE FLOODING PROBLEMS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

THE FRONTAL BOUNDARY WILL PROVIDE CONTINUED CHANCES FOR
THUNDERSTORMS AND THE POTENTIAL FOR SEVERE WEATHER THROUGH THE
REMAINDER OF THE WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING.

&&

MORE INFORMATION MAY BE OBTAINED AT THE FOLLOWING WEB PAGE:
   HTTP://WWW.WEATHER.GOV/HASTINGS  (ALL LOWERCASE)

WESELY

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 21, 7:39 PM CDT	Severe Thunderstorm Warning	GID	Greeley, Howard	36 min
Aug 21, 7:40 PM CDT	Severe Thunderstorm Warning	GID	Dawson	65 min
Aug 21, 7:47 PM CDT	Severe Thunderstorm Warning	GID	Greeley, Valley	58 min
Aug 21, 7:50 PM CDT	Severe Thunderstorm Warning	GID	Gosper	55 min
Aug 21, 8:44 PM CDT	Severe Thunderstorm Warning	GID	Gosper	61 min
Aug 21, 9:18 PM CDT	Severe Thunderstorm Warning	GID	Dawson	42 min
Aug 22, 4:00 PM CDT	Severe Thunderstorm Warning	GID	Buffalo, Hall, Howard, Sherman	45 min
Aug 22, 4:15 PM CDT	Severe Thunderstorm Warning	GID	Furnas, Gosper	45 min
Aug 22, 4:18 PM CDT	Severe Thunderstorm Warning	GID	Buffalo	42 min
Aug 22, 4:34 PM CDT	Severe Thunderstorm Warning	GID	Adams	41 min
Aug 22, 4:40 PM CDT	Severe Thunderstorm Warning	GID	Furnas, Gosper	35 min
Aug 22, 4:40 PM CDT	Severe Thunderstorm Warning	GID	Hall	50 min
Aug 22, 5:05 PM CDT	Tornado Warning	GID	Adams, Clay	25 min
Aug 22, 5:11 PM CDT	Severe Thunderstorm Warning	GID	Hamilton	64 min
Aug 22, 5:14 PM CDT	Severe Thunderstorm Warning	GID	Phelps	61 min
Aug 22, 5:26 PM CDT	Severe Thunderstorm Warning	GID	Furnas, Harlan	50 min
Aug 22, 5:28 PM CDT	Severe Thunderstorm Warning	GID	Adams, Clay	47 min
Aug 22, 5:40 PM CDT	Tornado Warning	GID	Clay	35 min
Aug 22, 5:53 PM CDT	Tornado Warning	GID	Clay	37 min
Aug 22, 6:01 PM CDT	Severe Thunderstorm Warning	GID	Fillmore	44 min
Aug 22, 6:06 PM CDT	Severe Thunderstorm Warning	GID	Nuckolls, Thayer	54 min
Aug 22, 6:10 PM CDT	Severe Thunderstorm Warning	GID	Hamilton, York	51 min
Aug 22, 6:14 PM CDT	Severe Thunderstorm Warning	GID	Franklin, Kearney	46 min
Aug 22, 6:17 PM CDT	Tornado Warning	GID	Fillmore	28 min
Aug 22, 6:42 PM CDT	Severe Thunderstorm Warning	GID	Fillmore	20 min
Aug 22, 6:48 PM CDT	Severe Thunderstorm Warning	GID	Adams, Webster	27 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2007 Every severe thunderstorm warning in 2007

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.