Alert archive / Nebraska / Flash Flood Warnings in 1998

Flash Flood Warning 15, NWS Omaha, NE

June 23, 1998Burt County, Nebraska

NWS Omaha, NE issued this flash flood warning at Jun 23, 1998, 9:53 PM CDT for Burt County, Nebraska. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 23, 1998, 9:53 PM CDT (02:53 UTC)
Expired
Jun 24, 1998, 3:55 AM CDT
In force
6 hr
Issued by
NWS Omaha, NE
Area
Whole counties

County Burt County, NE

The radar

The Omaha radar (KOAX), 59 km from the middle of the area, began a volume at 02:52 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

Topeka, KS (KTOP), launched 00:00Z, 2.9 hours before the alert went out and 322 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, Topeka, KS at 00:00Z on 1998-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2696 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, Topeka, KS at 00:00Z on 1998-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 113 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
2696 J/kg
Mixed-layer CIN
-41 J/kg
Mixed-layer LCL
1678 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
113 m²/s²
0-3 km storm-relative helicity
319 m²/s²
Significant tornado parameter
0.7
Supercell composite
13.9

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

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

In the hours before

Special weather statement, Jun 23, 5:05 PM CDT, 4 hours 48 minutes before
NEZ011-012-015>018-030>034-042>045-050>053-065>068-078-088>093-
IAZ043-055-056-069-079-080-090-091-241200-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
505 PM CDT TUE JUN 23 1998

...SEVERE WEATHER OUTLOOK FOR EASTERN NEBRASKA AND SOUTHWEST IOWA...

SPOTTER ACTION...
STORM SPOTTER ACTIVATION MAY BE REQUIRED TONIGHT IN EASTERN NEBRASKA
AND SOUTHWEST IOWA.

DISCUSSION...
THERE IS A CHANCE FOR THUNDERSTORMS TONIGHT IN EASTERN NEBRASKA AND
SOUTHWEST IOWA AS VERY MOIST AND UNSTABLE AIR CONTINUES TO MOVE ACROSS
THE REGION AS A WARM FRONT FROM SOUTH CENTRAL NEBRASKA THROUGH NORTHEAST
KANSAS AND NORTH MISSOURI LIFTS NORTH.

DUE TO THE DEGREE OF INSTABILITY AND WIND SHEAR CONSIDERATIONS...SOME
OF THESE STORMS COULD TURN SEVERE WITH LARGE HAIL...DAMAGING WINDS AND
ISOLATED TORNADOES.

IN ADDITION TO THE THREAT OF SEVERE WEATHER...DUE TO THE VERY MOIST
NATURE OF THE ATMOSPHERE...THE THUNDERSTORMS MAY PRODUCE LOCALLY HEAVY
RAINS.

GW

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 23, 7:01 PM CDTTornado WarningOAXColfax, Platte34 min
Jun 23, 7:24 PM CDTTornado WarningOAXThurston51 min
Jun 23, 7:28 PM CDTSevere Thunderstorm WarningOAXCuming, Wayne62 min
Jun 23, 7:30 PM CDTSevere Thunderstorm WarningOAXKnox65 min
Jun 23, 7:32 PM CDTSevere Thunderstorm WarningOAXSaline48 min
Jun 23, 7:37 PM CDTTornado WarningOAXColfax, Platte33 min
Jun 23, 7:45 PM CDTTornado WarningOAXCuming, Stanton, Wayne45 min
Jun 23, 7:56 PM CDTTornado WarningOAXDodge49 min
Jun 23, 8:07 PM CDTTornado WarningOAXCuming48 min
Jun 23, 8:19 PM CDTSevere Thunderstorm WarningOAXPlatte66 min
Jun 23, 8:24 PM CDTSevere Thunderstorm WarningOAXButler, Saline, Seward61 min
Jun 23, 8:26 PM CDTTornado WarningOAXBurt, Washington49 min
Jun 23, 8:31 PM CDTSevere Thunderstorm WarningOAXCedar49 min
Jun 23, 8:43 PM CDTTornado WarningOAXDodge32 min
Jun 23, 8:48 PM CDTSevere Thunderstorm WarningOAXLancaster, Saunders62 min
Jun 23, 8:53 PM CDTSevere Thunderstorm WarningOAXCuming47 min
Jun 23, 9:09 PM CDTTornado WarningOAXPlatte36 min
Jun 23, 9:14 PM CDTSevere Thunderstorm WarningOAXBurt, Dodge, Washington61 min
Jun 23, 9:19 PM CDTFlash Flood WarningOAXCuming, Dodge5 hr
Jun 23, 9:22 PM CDTSevere Thunderstorm WarningOAXColfax48 min
Jun 23, 9:39 PM CDTSevere Thunderstorm WarningOAXCuming, Stanton61 min
Jun 23, 10:05 PM CDTTornado WarningOAXWashington35 min
Jun 23, 10:11 PM CDTSevere Thunderstorm WarningOAXBurt64 min
Jun 23, 10:21 PM CDTTornado WarningOAXBurt29 min
Jun 23, 10:26 PM CDTSevere Thunderstorm WarningOAXCedar34 min
Jun 23, 10:35 PM CDTSevere Thunderstorm WarningOAXGage45 min
Jun 24, 12:37 AM CDTSevere Thunderstorm WarningOAXPawnee48 min
Jun 24, 1:04 AM CDTSevere Thunderstorm WarningOAXRichardson36 min
Jun 23, 8:17 PM CDTTornado WarningOAXMonona33 min
Jun 23, 8:57 PM CDTSevere Thunderstorm WarningOAXMonona48 min
Jun 23, 9:41 PM CDTSevere Thunderstorm WarningOAXMonona64 min
Jun 23, 11:12 PM CDTFlash Flood WarningOAXMonona7 hr

Nearby

Flash Flood Warnings in Nebraska, 1998Every flash flood warning in 1998

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.