Alert archive / Nebraska / Flash Flood Warnings in 1998
Flash Flood Warning 30, NWS Omaha, NE
NWS Omaha, NE issued this flash flood warning at Jul 29, 1998, 7:25 PM CDT for Saline County, Nebraska. It was in force for 5 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
- Jul 29, 1998, 7:25 PM CDT (00:25 UTC)
- Expired
- Jul 30, 1998, 12:30 AM CDT
- In force
- 5 hr
- Issued by
- NWS Omaha, NE
- Area
- Whole counties
County Saline County, NE
The radar
The Omaha radar (KOAX), 110 km from the middle of the area, began a volume at 00:25 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 00:00Z, 0.4 hours before the alert went out and 110 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
- 150 J/kg
- Mixed-layer CIN
- -52 J/kg
- Mixed-layer LCL
- 1120 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 216 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 2.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KOMA 300026 FFWOMA NEC151-300530- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 725 PM CDT WED JUL 29 1998 THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A * FLASH FLOOD WARNING FOR... SALINE COUNTY IN SOUTHEASTERN NEBRASKA * UNTIL 1230 AM CDT * AT 725 PM CDT...RADAR INDICATED THREE TO FOUR INCHES OF RAIN HAD FALLEN IN CENTRAL SALINE COUNTY SINCE 430 PM. MORE STORMS WITH ADDITIONAL RAIN SHOULD MOVE ACROSS THE AREA FROM THE WEST YET THIS EVENING. SOME STREAMS AFFECTED INCLUDE...THE SMALL TRIBUTARIES OF TURKEY CREEK...THE SMALL TRIBUTARIES OF THE BIG BLUE RIVER. IF WIDESPREAD HEAVY RAIN CONTINUES TO FALL...A FLOOD WARNING MAY BE ISSUED SPECIFICALLY FOR TURKEY CREEK. DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR VEHICLE TO CROSS SAFELY. MILLER
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, Jul 29, 4:50 PM CDT, 2 hours 35 minutes before
NEZ011-012-015>018-030>034-042>045-050>053-065>068-078-088>093- IAZ043-055-056-069-079-080-090-091-301200- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 450 PM CDT WED JUL 29 1998 ...SEVERE WEATHER OUTLOOK FOR EASTERN NEBRASKA AND SOUTHWEST IOWA... SPOTTER ACTION... STORM SPOTTER ACTIVATION MAY BE REQUIRED THIS EVENING AND TONIGHT IN PARTS OF EASTERN NEBRASKA AND SOUTHWEST IOWA. THE RISK AREA IS GENERALLY SOUTHWEST OF A LINE FROM ALBION TO NEBRASKA CITY. DISCUSSION... A NEARLY STATIONARY FRONT ALONG THE NEBRASKA/KANSAS BORDER WILL BE THE FOCAL POINT FOR STRONG THUNDERSTORMS INTO THURSDAY. THESE STORMS COULD PRODUCE HEAVY RAIN IN PARTS OF EASTERN NEBRASKA AND SOUTHWEST IOWA. THERE IS A SLIGHT CHANCE THAT SOME OF THE STORMS COULD BECOME SEVERE...PRODUCING STRONG WINDS AND HAIL UP TO AROUND ONE INCH IN DIAMETER. AGAIN...THE MAIN THREAT FROM THUNDERSTORMS OVERNIGHT IS HEAVY RAIN... WHICH COULD PRODUCE LOC&AL FLOODING. MILLER
Special weather statement, Jul 29, 4:50 PM CDT, 2 hours 35 minutes before
NEZ011-012-015>018-030>034-042>045-050>053-065>068-078-088>093- IAZ043-055-056-069-079-080-090-091-301200- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 450 PM CDT WED JUL 29 1998 ...SEVERE WEATHER OUTLOOK FOR EASTERN NEBRASKA AND SOUTHWEST IOWA... SPOTTER ACTION... STORM SPOTTER ACTIVATION MAY BE REQUIRED THIS EVENING AND TONIGHT IN PARTS OF EASTERN NEBRASKA AND SOUTHWEST IOWA. THE RISK AREA IS GENERALLY SOUTHWEST OF A LINE FROM ALBION TO NEBRASKA CITY. DISCUSSION... A NEARLY STATIONARY FRONT ALONG THE NEBRASKA/KANSAS BORDER WILL BE THE FOCAL POINT FOR STRONG THUNDERSTORMS INTO THURSDAY. THESE STORMS COULD PRODUCE HEAVY RAIN IN PARTS OF EASTERN NEBRASKA AND SOUTHWEST IOWA. THERE IS A SLIGHT CHANCE THAT SOME OF THE STORMS COULD BECOME SEVERE...PRODUCING STRONG WINDS AND HAIL UP TO AROUND ONE INCH IN DIAMETER. AGAIN...THE MAIN THREAT FROM THUNDERSTORMS OVERNIGHT IS HEAVY RAIN... WHICH COULD PRODUCE LOC&AL FLOODING. MILLER
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.