Alert archive / Nebraska / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 239, NWS Hastings, NE
NWS Hastings, NE issued this severe thunderstorm warning at Sep 22, 2001, 4:59 AM CDT for Hamilton County, Nebraska. It was in force for 46 min. 1 report 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
- Sep 22, 2001, 4:59 AM CDT (09:59 UTC)
- Expired
- Sep 22, 2001, 5:45 AM CDT
- In force
- 46 min
- Issued by
- NWS Hastings, NE
- Area
- Whole counties
County Hamilton County, NE
The radar
The Grand Island radar (KUEX), 71 km from the middle of the area, began a volume at 10:01 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 |
|---|---|---|---|
| Sep 22, 5:15 AM CDT | Hail 0.75 | Stockham, 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 22, 3:15 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 10.0 hours before the alert went out and 147 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
- 35 J/kg
- Mixed-layer CIN
- -247 J/kg
- Mixed-layer LCL
- 1607 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- -11 m²/s²
- 0-3 km storm-relative helicity
- 77 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.3
The text
As transmitted, in the capitals the NWS used until 2016.
560 WUUS53 KGID 221000 SVRGRI NEC081-221045- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE HASTINGS NE 459 AM CDT SAT SEP 22 2001 THE NATIONAL WEATHER SERVICE IN HASTINGS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN HAMILTON COUNTY IN SOUTH CENTRAL NEBRASKA * UNTIL 545 AM CDT * AT 457 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 8 MILES EAST OF GILTNER...OR ABOUT 22 MILES NORTHEAST OF HASTINGS...MOVING EAST AT 25 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... AURORA AT 505 AM CDT STOCKHAM AT 510 AM CDT PEOPLE IN SOUTHERN HAMILTON COUNTY SHOULD SEEK SHELTER IN A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. THE PRIMARY SEVERE WEATHER THREAT IS LARGE HAIL OF ONE INCH IN DIAMETER OR MORE. LOCALLY HEAVY RAINFALL IS ALSO LIKELY...WITH SOME MINOR LOWLAND FLOODING OR PONDING OF WATER ON ROADWAYS POSSIBLE. $$ LAT...LON 4081 9827 4070 9825 4071 9784 4089 9783 GURNEY NNNN
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 Sep 22, 3:20 AM CDT, 1 hour 39 minutes earlier.
Area forecast discussion, Sep 22, 3:20 AM CDT, 1 hour 39 minutes before
SOUTH CENTRAL NEBRASKA/NORTH CENTRAL KANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HASTINGS NE 320 AM CDT SAT SEP 22 2001 FORECAST CONCERNS ARE TSTMS TODAY...FOLLOWED BY EXTENT OF COOLING BEHIND FRONT EVENING ANALYSIS SHOWED A FAIRLY ACTIVE NW FLOW REGIME WITH SEVERAL EMBEDDED SHORTWAVES. AN H85 WARM FRONT STRETCHED N/S ACROSS CENTRAL NEB AND MOIST AXIS OF 10+C H85 DPS REACHED LBF. AT THE SFC AS OF 06Z...THE SFC BOUNDARY WAS LOCATED FROM SW TO SC NEBRASKA WITH A SIMILAR MOIST AXIS OF 60F DPS EXTENDING NORTH FROM KS INTO SC NEB. ELEVATED TSTMS HAVE DEVELOPED LAST COUPLE OF HOURS ON NOSE OF 35KT LLVL JET AND OVERALL COVERAGE HAS INCREASED. HAIL IS THE PRIMARY THREAT WITH STORMS WITH SVR WATCH FORTHCOMING. SCATTERED TSTMS WILL CONTINUE EARLY THIS MORNING...WITH REDEVELOPMENT THIS AFTN AS SFC COLD FRONT...CURRENTLY IN SE MT...APPROACHES CWA. WILL GO WITH AFTN POPS RANGING FROM 30 NW TO 50 SE. AFTN TEMPS WILL BE WARM SW WITH HIGHS NR 90...WITH MAXES IN THE 80S ELSEWHERE...OR GENERALLY NR FWC. TSTM CHCS WILL CONTINUE TONIGHT BEFORE FRONT CLEARS CWA. LATEST SWODY1 OUTLINES SVR THREAT WITH HAIL/WIND PRIMARY THREATS. COOLEST AIR ARRIVES SUNDAY AND CAA WILL DROP MAXES SOME 20-25 DEGREES FROM TODAYS. OVERALL HIGHS IN THE 60S. HOW COOL TEMPS WILL BE SUNDAY NIGHT IS A CONCERN...AS WELL AS ANY FROST POTENTIAL IN NORTHEAST AS 1033MB SFC HIGH BUILDS SE. ATTM WILL KEEP LOWS IN UPPER 30S RANGE IN NE COUNTIES AND NOT MENTION FROST....BUT WILL NEED TO MONITOR. NO SIGNIFICANT CHANGES PLANNED FOR THE EXTENDED. .GID...NONE. FAY
The office that day
Everything else NWS Hastings, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 22, 12:32 AM CDT | Severe Thunderstorm Warning | GID | Kearney, Phelps | 43 min |
| Sep 22, 3:41 AM CDT | Severe Thunderstorm Warning | GID | Hamilton | 49 min |
| Sep 22, 4:19 AM CDT | Severe Thunderstorm Warning | GID | Clay | 41 min |
| Sep 22, 5:00 AM CDT | Severe Thunderstorm Warning | GID | Clay | 45 min |
| Sep 22, 5:37 AM CDT | Severe Thunderstorm Warning | GID | Fillmore | 53 min |
| Sep 22, 7:31 AM CDT | Severe Thunderstorm Warning | GID | Fillmore | 44 min |
| Sep 22, 6:59 PM CDT | Tornado Warning | GID | Clay, Fillmore | 46 min |
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.