Alert archive / Nebraska / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 168, NWS Hastings, NE
NWS Hastings, NE issued this severe thunderstorm warning at Jul 18, 2001, 6:28 PM CDT for Thayer County, Nebraska. It was in force for 47 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 18, 2001, 6:28 PM CDT (23:28 UTC)
- Expired
- Jul 18, 2001, 7:15 PM CDT
- In force
- 47 min
- Issued by
- NWS Hastings, NE
- Area
- Whole counties
County Thayer County, NE
The radar
The Grand Island radar (KUEX), 74 km from the middle of the area, began a volume at 23:29 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 18, 6:44 PM CDT | Thunderstorm Wind 61 E | Hubbell, NE | |
| Jul 18, 6:58 PM CDT | Tornado F1 | Hubbell, NE |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 11.5 hours before the alert went out and 164 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
- 592 J/kg
- Mixed-layer CIN
- -482 J/kg
- Mixed-layer LCL
- 1435 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 257 m²/s²
- 0-3 km storm-relative helicity
- 264 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 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 Jul 18, 1:50 PM CDT, 4 hours 38 minutes earlier.
Area forecast discussion, Jul 18, 1:50 PM CDT, 4 hours 38 minutes before
SOUTH CENTRAL NEBRASKA/NORTH CENTRAL KANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HASTINGS NE 150 PM CDT WED JUL 18 2001 MAIN CONCERN IS THUNDER POTENTIAL TONIGHT AND THE CONTINUING HEAT. REGIONAL RADAR MOSAIC THIS AFTERNOON CONTINUES TO SHOW WDLY SCATTERED SHOWERS AND THUNDERSTORMS MAINTAINING THEMSELVES IN AREA OF STRONG INSTABILITY AND MID LEVEL WAA LIFT...MOSTLY SOUTH OF I- 80. STORMS ARE INTENSIFYING AS THEY MOVE EAST INTO RICHER MOISTURE. MEANWHILE...WATER VAPOR IMAGERY CONTINUES TO SHOW THE NON- PROGRESSIVE PATTERN OF THE UPPER LEVEL HIGH PRESSURE DOME OVER THE CENTRAL STATES WITH ACCOMPANYING TROFS ON EITHER SIDE. THE MAIN UPPER LEVEL LOW OVER ALBERTA CONTINUES TO EJECT A SERIES OF VORTS OUT OF THE GREAT BASIN AND INTO THE NORTHERN PLAINS. AT THE SAME TIME AMPLE MOISTURE CONTINUES TO STREAM NORTHEASTWARD OUT OF THE SUB- TROPICS REGION. AT THE SFC...LOW PRESSURE WAS SITUATED OVER SD WITH A STALLED BOUNDARY CUTTING THROUGH THE NORTHERN PLAINS INTO THE OHIO VALLEY...AND TO THE EAST COAST. A COOL FRONTAL BOUNDARY WAS APPARENT EAST OF THE NORTHERN ROCKIES IN EASTERN MT/WY. THE ETA IS SUGGESTING THAT THE DEVELOPMENT OF A CONVECTIVE COMPLEX IS PLAUSIBLE THIS EVENING OVER NORTHERN SECTIONS OF NEB. LOW LEVEL GEOSTROPHIC WINDS TAKE A CYCLONIC TURN WITHIN A SMALL AREA OF 850MB FRONTOGENESIS BETWEEN 00Z & 06Z IN THE VICINITY OF VTN... SUGGESTING INITIATION CLOSE TO THAT LOCATION. AS STORMS ORGANIZE OVERNIGHT WITH THE STRENGTHENING OF THE LOW LEVEL JET...CORFIDI VECTORS INDICATE MOVEMENT EAST THEN SOUTHEAST. AT THIS POINT...AM INCLINED TO GO WITH SMALL POPS...30 OR 40% CAUSE I'M NOT SURE IF STORMS WILL BREACH NORTHERN CWA. OTHERWISE...THE HEAT AND HUMIDITY SAGA CONTINUES. TEMPS TONIGHT PROBABLY WON'T JUSTIFY AN ADVISORY...BUT ONE WILL MOST LIKELY BE NEEDED TOMORROW AND FRIDAY AS LOW LEVEL MOISTURE CONTINUES TO SHOOT NORTHWARD AND THE UNPROGRESSIVE UPPER LEVEL HIGH REMAINS IN PLACE. NO MAJOR CHANGES TO THE EXTENDED. .GID...NONE. DEE
In the hours before
Special weather statement, Jul 18, 4:30 PM CDT, 1 hour 58 minutes before
KSZ005>007-017>019-NEZ039>041-046>049-060>064-072>077-082>087-190000- SEVERE WEATHER OUTLOOK - SOUTH CENTRAL NEBRASKA/NORTH CENTRAL KANSAS NATIONAL WEATHER SERVICE HASTINGS NE 430 PM CDT WED JUL 18 2001 ...SPOTTER ACTIVATION MAY BE NEEDED THIS EVENING ACROSS PARTS OF SOUTH CENTRAL NEBRASKA AND NORTH CENTRAL KANSAS... THUNDERSTORMS ARE EXPECTED TO INCREASE IN COVERAGE EARLY THIS EVENING ACROSS NORTH CENTRAL KANSAS. WITH TEMPERATURES TOPPING 100 DEGREES...AND DEWPOINTS NEAR 65 DEGREES...THE ATMOSPHERE HAS BECOME VERY UNSTABLE ACROSS NORTH CENTRAL KANSAS. LITTLE TO NO INHIBITION TO THUNDERSTORM DEVELOPMENT IS IN PLACE...AS LOW LEVEL WIND FIELDS CONVERGE ACROSS THE AREA. THUNDERSTORMS SHOULD DEVELOP AND MOST EAST ACROSS NORTH CENTRAL KANSAS...ON A SCATTERED BASIS THIS EVENING. THE PRIMARY SEVERE WEATHER THREAT WILL BE DOWNBURST WINDS...AND HAIL IN EXCESS OF ONE INCH IN DIAMETER. AN ISOLATED TORNADO CAN NOT BE RULE OUT BEFORE SUNSET. A SEVERE THUNDERSTORM WATCH HAS BEEN POSTED FOR NORTH CENTRAL KANSAS UNTIL 10 PM. POCKETS OF HEAVY WILL FALL WITH THE STRONGEST STORMS. ACROSS SOUTH CENTRAL NEBRASKA...THUNDERSTORMS ARE ALSO FORECAST TONIGHT...WITH AN ISOLATED SEVERE STORM POSSIBLE. THE ATMOSPHERE IS VERY UNSTABLE...BUT CAPPED SLIGHTLY MORE THAN AREAS FURTHER SOUTH. THUNDERSTORMS WHICH MANAGE TO DEVELOP...WOULD LIKELY BE SEVERE. LARGE HAIL AND DAMAGING WINDS ARE THE PRIMARY THREAT. AGAIN...AN ISOLATED TORNADO IS POSSIBLE BEFORE SUNSET. MORITZ
Nearby
Severe Thunderstorm Warnings in Nebraska, 2001Every severe thunderstorm warning in 2001
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.