Alert archive / Iowa / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 15, NWS Quad Cities, IA
NWS Quad Cities, IA issued this severe thunderstorm warning at Apr 9, 2001, 8:29 AM CDT for Cedar County, Iowa. 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
- Apr 9, 2001, 8:29 AM CDT (13:29 UTC)
- Expired
- Apr 9, 2001, 9:15 AM CDT
- In force
- 46 min
- Issued by
- NWS Quad Cities, IA
- Area
- Whole counties
County Cedar County, IA
The radar
The Quad Cities radar (KDVN), 49 km from the middle of the area, began a volume at 13:28 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 |
|---|---|---|---|
| Apr 9, 8:40 AM CDT | Hail 0.75 | Lime City, IA | Penny sized hail reported by trained storm spotter. |
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
Davenport, (KDVN), launched 12:00Z, 1.5 hours before the alert went out and 55 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1342 m above ground
- 0-6 km bulk shear
- 74 kt
- 0-1 km storm-relative helicity
- 192 m²/s²
- 0-3 km storm-relative helicity
- 174 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KDVN 091329 SVRMLI IAC031-091415- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE QUAD CITIES IA IL 829 AM CDT MON APR 9 2001 THE NATIONAL WEATHER SERVICE IN QUAD CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CEDAR COUNTY IN EAST CENTRAL IOWA * UNTIL 915 AM CDT * AT 828 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE HAIL 10 MILES SOUTHWEST OF TIPTON... OR 6 MILES NORTHEAST OF WEST LIBERTY...MOVING EAST AT 25 MPH. * THE SEVERE THUNDERSTORM IS EXPECTED TO BE NEAR... 9 MILES SOUTH OF TIPTON BY 835 AM CDT. 8 MILES SOUTH OF BENNETT BY 855 AM CDT. THIS SEVERE THUNDERSTORAM IS CAPABLE OF PRODUCING HAIL UP TO 1 INCH IN DIAMETER. TAKE COVER IN A STURDY STRUCTURE UNTIL THE STORM PASSES. HLADIK
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 Quad Cities, IA wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 9, 2:29 AM CDT, 6 hours earlier.
Area forecast discussion, Apr 9, 2:29 AM CDT, 6 hours before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE QUAD CITIES IA IL 230 AM CDT SUN APR 8 2001 LINES OF THUNDERSTORMS ACROSS NW HALF FORECAST AREA OCCURRING ALONG NOSE OF H850 40 KT JET AND ALONG SURFACE WARM FRONT. WARM FRONT EXTENDED FROM SURFACE LOW OVER N CENTRAL KS NE TO NEAR DSM ALONG I-80 AND JUST N OF QUAD CITIES EAST TO NEAR SBN. KDVN 88D SHOWING A COUPLE OUTFLOW BOUNDARIES THAT WILL INTERSECT WITH MAIN LINES SOUTHERN CWA TO CONTINUE THREAT OF SEVERE STORMS OVER NEXT SEVERAL HOURS. SW FLOW ALOFT CONTINUES WITH UPPER LOW OVER PAC NW AND IMBEDDED SHORTWAVES TO MOVE OVER FORECAST AREA THROUGH MIDWEEK. FORECAST CHALLENGE WILL BE INITIAL WORDING FOR DEPARTING COMPLEX THIS MORNING AND THEN POPS FOR TUESDAY NIGHT AND WEDNESDAY EVENT. ETA HAD BEST HANDLE ON SURFACE LOW POSITION AT 06Z...BUT BLEND OF ETA AND AVN QPF GOOD FIT TO CURRENT RAIN AREA. IN UPPER LEVELS...NGM IS FASTER AND DEEPER WITH LOW TO EJECT OUT OF SW WEDNESDAY...WITH ETA AND AVN SLOWER AND FOLLOWED. LOCATION OF SURFACE LOW AND WARM FRONT WILL BE CRITICAL TO LOCATION OF PRECIP...AND FOLLOWING SLIGHTLY SLOWER ETA PLACES LOW IN SE IA BY 18Z WITH W CENTRAL IL REMAINING IN WARM SECTOR AND BEST CHANCE FOR TSRA REDEVELOPMENT IN AFTERNOON. AREAS TO NORTH AND WEST WILL WORD AS MAINLY MORNING CHANCES. FRONT PUSHES BACK SOUTH OF FORECAST AREA LATE MONDAY BEFORE NEXT LOW DEVELOPING IN EASTERN CO PUSHES IT BACK NORTH AT H850 TO BISECT FORECAST AREA AGAIN BY LATE TUESDAY. WITH SIMILAR SCENARIO TO TONIGHT...BUT MUCH STRONGER LOW LEVEL JET AND AND UPPER DIVERGENCE...WILL CONTINUE WITH LIKELY POPS WITH MENTION OF HEAVY RAINFALL TUESDAY NIGHT. MAX TEMPERATURES WILL REMAIN A TOUGH CALL WITH GUIDANCE GOING LOWER 60S NORTH TO 80 SOUTH FOR TODAY. WILL TEMPER THIS BACK SOME WITH MAINLY 60S NORTH AND 70S SOUTH BOTH TODAY AND TUESDAY AS FRONTAL POSITION WILL BE CRITICAL. .DVN... IA...NONE. IL...NONE./ MO...NONE. SHEETS
In the hours before
Special weather statement, Apr 9, 5:25 AM CDT, 3 hours 4 minutes before
IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007- 009-015>018-024>026-034-035-MOZ009-010-101000- SIGNIFICANT WEATHER OUTLOOK NATIONAL WEATHER SERVICE QUAD CITIES IA IL 525 AM CDT MON APR 9 2001 ...ISOLATED SEVERE THUNDERSTORMS POSSIBLE THIS AFTERNOON... LOW PRESSURE WILL MOVE EAST ALONG A WARM FRONT ACROSS SOUTHERN IOWA INTO NORTH CENTRAL ILLINOIS BY EVENING. THIS MAY PRODUCE A FEW AFTERNOON THUNDERSTORMS ALONG AND NORTH OF THE FRONT IN SOUTHEAST IOWA AND WESTERN ILLINOIS. THERE IS A SLIGHT RISK OF STORMS BECOMING SEVERE WITH LARGE HAIL AND DAMAGING WIND IN FAR EASTERN IOWA LATE IN THE AFTERNOON AND THEN IN WESTERN ILLINOIS EARLY IN THE EVENING. THE AREA WILL SEE A BREAK FROM THUNDERSTORMS TONIGHT AND EARLY TUESDAY BEFORE ANOTHER ROUND OF ACTIVE WEATHER ARRIVES FOR TUESDAY NIGHT AND WEDNESDAY. A STRONG UPPER LEVEL DISTURBANCE WILL MOVE NORTHEAST ACROSS THE AREA LATE TUESDAY. THIS WILL PUSH A WARM FRONT BACK NORTH INTO SOUTHERN IOWA AND NORTHERN ILLINOIS. THERE IS A A SLIGHT RISK FOR SEVERE THUNDERSTORMS MAINLY ALONG AND SOUTH OF INTERSTATE 80 IN THE QUAD CITIES OUTLOOK AREA FOR LATE TUESDAY. THE RETURN OF DEEP MOISTURE FROM THE GUL8F OF MEXICO WILL ALSO BRING THE POTENTIAL FOR HEAVY RAIN AND POSSIBLY FLASH FLOODING. SPOTTER ACTIVATION IS NOT ANTICIPATED FOR TODAY...BUT MAY BE NECESSARY TUESDAY. SHEETS
Local storm report, Apr 9, 5:46 AM CDT, 2 hours 43 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
546 AM CDT MON APR 09 2001
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1015 PM 2 N CENTER PT IA .5 INCH HAIL
04/08/01 LINN REPORTED BY EMERGENCY
MANAGEMENT.
0230 AM DAVENPORT IA .25 INCH HAIL
04/09/01 SCOTT REPORTED BY OFF-DUTY
NWS EMPLOYEE.
0234 AM MUSCATINE IA .25 INCH HAIL
04/09/01 MUSCATINE REPORTED BY COOPERATIVE
OBSERVER.
0243 AM BETTENDORF IA .5 INCH HAIL
04/09/01 SCOTT REPORTED BY OFF-DUTY
NWS EMPLOYEE.
0310 AM ERIE IL .25 INCH HAIL
04/09/01 WHITESIDE REPORTED BY STORM
SPOTTER.
0320 AM GALVA IL .25 INCH HAIL
04/09/01 HENRY REPORTED BY EMERGENCY
MANAGEMENT.
0337 AM NEPONSET IL .25 INCH HAIL
04/09/01 BUREAU REPORTED BY STORM
SPOTTER.Local storm report, Apr 9, 6:20 AM CDT, 2 hours 9 minutes before
LOCAL STORM REPORT...FINAL EVENT SUMMARY...
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
620 AM CDT MON APR 09 2001
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0839 PM GREELEY IA 1 INCH HAIL
04/08/01 DELAWARE REPORTED BY STORM
SPOTTER.
0849 PM COLESBURG IA 1 INCH HAIL
04/08/01 DELAWARE REPORTED BY STORM
SPOTTER.
0928 PM 6 NW KEYSTONE IA 1 INCH HAIL
04/08/01 BENTON AT INTERSECTION OF
HIGHWAYS 21 AND E36.
REPORTED BY STORM
SPOTTER.
0946 PM GARRISON IA .88 INCH HAIL
04/08/01 BENTON REPORTED BY STORM
SPOTTER.
1015 PM 2 N CENTER PT IA .5 INCH HAIL
04/08/01 LINN REPORTED BY EMERGENCY
MANAGEMENT.
1048 PM 9 NE VINTON IA FUNNEL CLOUD
04/08/01 BENTON REPORTED BY STORM
SPOTTER.
1056 PM 2 NW QUASQUETON IA .75 INCH HAIL
04/08/01 BUCHANAN REPORTED BY STORM
SPOTTER. ON HIGHWAY W35.
1125 PM MT AUBURN IA .5 INCH HAIL
04/08/01 BENTON REPORTED BY LAW
ENFORCEMENT OFFICIAL.
1142 PM 2 W ROWLEY IA .5 INCH HAIL
04/08/01 BUCHANAN REPORTED BY STORM
SPOTTER. AT
INTERSECTION OF
HIGHWAYS 150 AND D47.
1142 PM 2 W ROWLEY IA SMALL STREAM FLOODING
04/08/01 BUCHANAN REPORTED BY EMERGENCY
MANAGEMENT.
1222 AM 2 SW DUBUQUE IA .5 INCH HAIL
04/09/01 DUBUQUE REPORTED BY LAW
ENFORCEMENT OFFICIAL.
1240 AM EAST DUBUQUE IL .5 INCH HAIL
04/09/01 JODAVIESS REPORTED BY STORM
SPOTTER.
1240 AM GALENA IL .5 INCH HAIL
04/09/01 JODAVIESS REPORTED BY STORM
SPOTTER.
0157 AM BLUE GRASS IA .5 INCH HAIL
04/09/01 SCOTT REPORTED BY LAW
ENFORCEMENT OFFICIAL.
0157 AM WEST CHESTER IA .75 INCH HAIL
04/09/01 WASHINGTON REPORTED BY STORM
SPOTTER.
0220 AM BLUE GRASS IA .5 INCH HAIL
04/09/01 SCOTT REPORTED BY LAW
ENFORCEMENT OFFICIAL.
0230 AM DAVENPORT IA .25 INCH HAIL
04/09/01 SCOTT REPORTED BY OFF-DUTY
NWS EMPLOYEE.
0234 AM MUSCATINE IA .25 INCH HAIL
04/09/01 MUSCATINE REPORTED BY COOPERATIVE
OBSERVER.
0243 AM BETTENDORF IA .5 INCH HAIL
04/09/01 SCOTT REPORTED BY OFF-DUTY
NWS EMPLOYEE.
0310 AM ERIE IL .25 INCH HAIL
04/09/01 WHITESIDE REPORTED BY STORM
SPOTTER.
0320 AM GALVA IL .25 INCH HAIL
04/09/01 HENRY REPORTED BY EMERGENCY
MANAGEMENT.
0337 AM NEPONSET IL .25 INCH HAIL
04/09/01 BUREAU REPORTED BY STORM
SPOTTER.The office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 8, 8:26 PM CDT | Severe Thunderstorm Warning | DVN | Delaware | 49 min |
| Apr 8, 9:30 PM CDT | Severe Thunderstorm Warning | DVN | Benton | 45 min |
| Apr 8, 10:06 PM CDT | Severe Thunderstorm Warning | DVN | Linn | 24 min |
| Apr 8, 10:20 PM CDT | Tornado Warning | DVN | Benton | 40 min |
| Apr 8, 10:40 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan | 50 min |
| Apr 9, 1:37 AM CDT | Severe Thunderstorm Warning | DVN | Washington | 38 min |
| Apr 9, 8:54 AM CDT | Severe Thunderstorm Warning | DVN | Scott | 66 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 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.