Alert archive / Iowa / Tornado Warnings in 2008
Tornado Warning 34, NWS Des Moines, IA
NWS Des Moines, IA issued this tornado warning at May 30, 2008, 4:05 AM CDT for Clarke County, Union County, Iowa. It was in force for 40 min. 8 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- May 30, 2008, 4:05 AM CDT (09:05 UTC)
- Expired
- May 30, 2008, 4:45 AM CDT
- In force
- 40 min
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
Counties Clarke County, IA, Union County, IA
The radar
The Des Moines radar (KDMX), 75 km from the middle of the area, began a volume at 08:59 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 |
|---|---|---|---|
| May 30, 4:12 AM CDT | TSTM WND DMG | 2 S Lorimor, IA | LIMBS DOWN ACROSS A ROAD. |
| May 30, 4:14 AM CDT | TORNADO | 3 Ne Thayer, IA | EF1 TORNADO START POINT |
| May 30, 4:14 AM CDT | TORNADO | 3 Ne Thayer, IA | EF1 TORNADO START POINT |
| May 30, 4:16 AM CDT | TSTM WND GST 68 | Murray, IA | SCHOOLNET SITE. |
| May 30, 4:21 AM CDT | TSTM WND GST 74 | Murray, IA | SCHOOLNET SITE |
| May 30, 4:24 AM CDT | TORNADO | 5 Nw Osceola, IA | EF1 TORNADO END POINT |
| May 30, 4:24 AM CDT | TORNADO | 5 Nw Osceola, IA | EF1 TORNADO END POINT |
| May 30, 4:30 AM CDT | TSTM WND DMG | Lorimor, IA | LIMBS AND BRANCHES DOWN IN LORIMOR AND CRESTON AREAS. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 29, 8:13 PM CDT | Tornado Watch | SPC | 8 hr |
| May 30, 1:19 AM CDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 9.1 hours before the alert went out and 206 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
- 3876 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 824 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 236 m²/s²
- 0-3 km storm-relative helicity
- 285 m²/s²
- Significant tornado parameter
- 6.4
- Supercell composite
- 26.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS53 KDMX 300905 TORDMX IAC039-175-300945- /O.NEW.KDMX.TO.W.0034.080530T0905Z-080530T0945Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE DES MOINES IA 405 AM CDT FRI MAY 30 2008 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A * TORNADO WARNING FOR... WESTERN CLARKE COUNTY IN SOUTH CENTRAL IOWA... EASTERN UNION COUNTY IN SOUTH CENTRAL IOWA... * UNTIL 445 AM CDT. * AT 404 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR AFTON...OR 48 MILES SOUTHWEST OF DES MOINES...MOVING EAST AT 51 MPH. * THE TORNADO WILL BE NEAR... THAYER BY 410 AM CDT... LORIMOR BY 415 AM CDT... MURRAY BY 420 AM CDT... OSCEOLA BY 430 AM CDT... THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 29 AND 43. IN ADDITION TO THE TORNADO...THIS STORM IS ALSO EXPECTED TO PRODUCE DESTRUCTIVE STRAIGHT LINE WINDS. THIS IS A HAZARDOUS SITUATION. SEEK SHELTER IN A BASEMENT...OR IN AN INTERIOR ROOM. STAY AWAY FROM WINDOWS. IF YOU ARE OUTSIDE OR IN A CAR...SEEK SHELTER IN A REINFORCED BUILDING. A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 AM CDT FRIDAY MORNING FOR SOUTH CENTRAL IOWA. LAT...LON 4116 9375 4096 9369 4095 9420 4112 9425 TIME...MOT...LOC 0905Z 264DEG 45KT 4104 9417 $$ KINNEY
4 follow-up statements
000
WWUS53 KDMX 300914
SVSDMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
413 AM CDT FRI MAY 30 2008
IAC039-175-300945-
/O.CON.KDMX.TO.W.0034.000000T0000Z-080530T0945Z/
UNION IA-CLARKE IA-
413 AM CDT FRI MAY 30 2008
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 AM CDT FOR WESTERN
CLARKE AND EASTERN UNION COUNTIES...
AT 409 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO. THIS TORNADO WAS LOCATED NEAR THAYER...OR 44
MILES SOUTHWEST OF DES MOINES...MOVING EAST AT 50 MPH.
THE TORNADO WILL BE NEAR...
OSCEOLA BY 425 AM CDT...
THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 29 AND 42.
IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING
DESTRUCTIVE STRAIGHT LINE WINDS OF 60 MPH.
LAT...LON 4113 9417 4116 9375 4111 9374 4107 9372
4106 9372 4105 9372 4096 9369 4095 9414
TIME...MOT...LOC 0913Z 270DEG 50KT 4104 9397
$$
KINNEY000
WWUS53 KDMX 300920
SVSDMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
419 AM CDT FRI MAY 30 2008
IAC039-175-300945-
/O.CON.KDMX.TO.W.0034.000000T0000Z-080530T0945Z/
UNION IA-CLARKE IA-
419 AM CDT FRI MAY 30 2008
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 AM CDT FOR WESTERN
CLARKE AND EAST CENTRAL UNION COUNTIES...
AT 418 AM CDT...A TORNADO WAS REPORTED. THIS TORNADO WAS LOCATED
NEAR MURRAY...OR 39 MILES SOUTH OF DES MOINES...MOVING EAST AT 50
MPH.
THE TORNADO WILL BE NEAR...
RURAL CENTRAL CLARKE COUNTY AT 430 AM CDT
THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 29 AND 42.
IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING
DAMAGING STRAIGHT LINE WINDS AROUND 70 MPH.
AT 416 AM CDT...A 68 MPH WIND GUST WAS MEASURED AT THE MURRAY
COMMUNITY SCHOOL.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 AM CDT FRIDAY MORNING FOR
SOUTH CENTRAL IOWA.
LAT...LON 4114 9408 4116 9375 4111 9374 4107 9372
4105 9372 4096 9369 4095 9404
TIME...MOT...LOC 0919Z 265DEG 55KT 4105 9385
$$
KINNEY000
WWUS53 KDMX 300930
SVSDMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
430 AM CDT FRI MAY 30 2008
IAC175-300940-
/O.CAN.KDMX.TO.W.0034.000000T0000Z-080530T0945Z/
UNION IA-
430 AM CDT FRI MAY 30 2008
...THE TORNADO WARNING FOR EAST CENTRAL UNION COUNTY IS CANCELLED...
AT 427 AM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE EITHER WEAKENED OR
MOVED OUT OF THE AREA...AND NO LONGER POSE AN IMMEDIATE THREAT TO
LIFE OR PROPERTY. THEREFORE...THE TORNADO WARNING HAS BEEN CANCELLED.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 AM CDT FRIDAY MORNING
FOR SOUTHEAST IOWA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 500
AM CDT FRIDAY MORNING FOR SOUTH CENTRAL IOWA.
LAT...LON 4114 9401 4116 9375 4112 9374 4111 9375
4107 9372 4105 9372 4096 9369 4095 9393
TIME...MOT...LOC 0930Z 258DEG 42KT 4109 9373
$$
IAC039-300945-
/O.CON.KDMX.TO.W.0034.000000T0000Z-080530T0945Z/
CLARKE IA-
430 AM CDT FRI MAY 30 2008
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 AM CDT FOR WESTERN
CLARKE COUNTY...
AT 427 AM CDT...A TORNADO WAS REPORTED. THIS TORNADO WAS LOCATED
NEAR OSCEOLA...OR 35 MILES SOUTH OF DES MOINES...MOVING EAST AT 48
MPH.
THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 29 AND 42.
IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING
DESTRUCTIVE STRAIGHT LINE WINDS OVER 70 MPH. A 74 MPH WIND GUST WAS
RECORDED AT MURRAY AT 421 AM CDT.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 AM CDT FRIDAY MORNING FOR
SOUTH CENTRAL IOWA.
LAT...LON 4114 9401 4116 9375 4112 9374 4111 9375
4107 9372 4105 9372 4096 9369 4095 9393
TIME...MOT...LOC 0930Z 258DEG 42KT 4109 9373
$$
KINNEY000
WWUS53 KDMX 300940
SVSDMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
441 AM CDT FRI MAY 30 2008
IAC039-300951-
/O.EXP.KDMX.TO.W.0034.000000T0000Z-080530T0945Z/
CLARKE IA-
441 AM CDT FRI MAY 30 2008
...THE TORNADO WARNING FOR WESTERN CLARKE COUNTY WILL EXPIRE AT 445
AM CDT...
AT 437 AM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE AREA.
THEREFORE...THE TORNADO WARNING HAS BEEN ALLOWED TO EXPIRE.
REPORT TORNADOES...WIND IN EXCESS OF 50 MPH...HAIL LARGER THAN ONE
HALF INCH...OR STORM DAMAGE BY CALLING LOCAL LAW ENFORCEMENT AND
ASKING THEM TO RELAY THE REPORT TO THE NATIONAL WEATHER SERVICE.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 AM CDT FRIDAY MORNING FOR
SOUTH CENTRAL IOWA.
LAT...LON 4114 9401 4116 9375 4112 9374 4111 9375
4107 9372 4105 9372 4096 9369 4095 9393
TIME...MOT...LOC 0941Z 258DEG 42KT 4111 9356
$$
KINNEYThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 29, 8:16 PM CDT | Severe Thunderstorm Warning | DMX | Sac | 44 min |
| May 29, 8:29 PM CDT | Tornado Warning | DMX | Crawford | 31 min |
| May 29, 8:43 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Pocahontas | 32 min |
| May 29, 8:56 PM CDT | River Flood Warning | DMX | Dallas | 20 days |
| May 29, 8:56 PM CDT | River Flood Warning | DMX | Boone, Webster | 23 days |
| May 29, 8:56 PM CDT | Tornado Warning | DMX | Calhoun, Carroll | 34 min |
| May 29, 9:09 PM CDT | Tornado Warning | DMX | Carroll | 27 min |
| May 29, 9:23 PM CDT | Tornado Warning | DMX | Greene | 31 min |
| May 29, 9:24 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Greene, Webster | 51 min |
| May 29, 9:30 PM CDT | Tornado Warning | DMX | Webster | 30 min |
| May 29, 9:51 PM CDT | Tornado Warning | DMX | Wright | 27 min |
| May 29, 10:02 PM CDT | Severe Thunderstorm Warning | DMX | Hamilton, Hardin | 43 min |
| May 29, 10:06 PM CDT | River Flood Warning | DMX | Story | 41 hr |
| May 29, 10:06 PM CDT | River Flood Warning | DMX | Polk, Story | 66 hr |
| May 29, 10:06 PM CDT | River Flood Warning | DMX | Mahaska | 27 days |
| May 29, 10:24 PM CDT | Severe Thunderstorm Warning | DMX | Guthrie | 39 min |
| May 29, 10:34 PM CDT | Flash Flood Warning | DMX | Crawford | 6 hr |
| May 29, 10:55 PM CDT | Tornado Warning | DMX | Dallas | 35 min |
| May 29, 11:07 PM CDT | Severe Thunderstorm Warning | DMX | Carroll, Crawford | 53 min |
| May 29, 11:30 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Guthrie | 45 min |
| May 29, 11:36 PM CDT | Severe Thunderstorm Warning | DMX | Wright | 23 min |
| May 29, 11:48 PM CDT | Flash Flood Warning | DMX | Calhoun, Carroll, Greene, Sac | 6 hr |
| May 29, 11:50 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Carroll, Greene | 40 min |
| May 29, 11:56 PM CDT | Tornado Warning | DMX | Audubon, Guthrie | 34 min |
| May 30, 12:19 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Guthrie | 29 min |
| May 30, 12:23 AM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall, Story | 37 min |
| May 30, 12:27 AM CDT | Flash Flood Warning | DMX | Boone, Calhoun, Greene, Hamilton, Hardin, Story and 1 more | 6 hr |
| May 30, 12:27 AM CDT | Tornado Warning | DMX | Jasper, Marshall | 33 min |
| May 30, 12:41 AM CDT | Tornado Warning | DMX | Tama | 34 min |
| May 30, 12:46 AM CDT | Tornado Warning | DMX | Dallas | 31 min |
| May 30, 1:04 AM CDT | Severe Thunderstorm Warning | DMX | Adams, Taylor | 41 min |
| May 30, 1:14 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Cass | 46 min |
| May 30, 1:41 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Clarke, Dallas, Guthrie, Madison and 2 more | 49 min |
| May 30, 1:50 AM CDT | Severe Thunderstorm Warning | DMX | Clarke, Decatur, Ringgold, Union, Warren | 40 min |
| May 30, 1:53 AM CDT | Flash Flood Warning | DMX | Black Hawk, Grundy, Hardin, Marshall, Tama | 6 hr |
| May 30, 2:01 AM CDT | Flash Flood Warning | DMX | Audubon, Dallas, Guthrie | 6 hr |
| May 30, 4:25 AM CDT | Severe Thunderstorm Warning | DMX | Clarke, Lucas, Marion, Warren | 50 min |
| May 30, 4:40 AM CDT | Tornado Warning | DMX | Clarke, Lucas, Warren | 19 min |
| May 30, 4:57 AM CDT | River Flood Warning | DMX | Jasper | 18 days |
| May 30, 5:01 AM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Marion | 44 min |
| May 30, 5:18 AM CDT | Tornado Warning | DMX | Mahaska, Marion | 42 min |
| May 30, 5:37 AM CDT | Severe Thunderstorm Warning | DMX | Mahaska | 23 min |
| May 30, 5:56 AM CDT | Areal Flood Warning | DMX | Carroll, Crawford, Greene | 8 hr |
| May 30, 6:29 AM CDT | Areal Flood Warning | DMX | Boone, Calhoun, Greene, Hamilton, Hardin, Story and 1 more | 6 hr |
| May 30, 6:32 AM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Wayne | 43 min |
| May 30, 6:51 AM CDT | Areal Flood Warning | DMX | Black Hawk, Grundy, Hardin, Marshall, Tama | 12 hr |
| May 30, 7:41 AM CDT | River Flood Warning | DMX | Marshall | 58 hr |
| May 30, 7:52 AM CDT | Areal Flood Warning | DMX | Audubon, Dallas, Guthrie | 5 hr |
| May 30, 8:53 AM CDT | River Flood Warning | DMX | Story | 31 hr |
| May 30, 9:38 AM CDT | River Flood Warning | DMX | Polk | 25 days |
| May 30, 9:38 AM CDT | River Flood Warning | DMX | Dallas, Polk | 3 days |
| May 30, 9:38 AM CDT | River Flood Warning | DMX | Polk | 20 days |
| May 30, 9:38 AM CDT | River Flood Warning | DMX | Polk | 20 days |
| May 30, 9:38 AM CDT | River Flood Warning | DMX | Humboldt | 12 hr |
| May 30, 9:38 AM CDT | River Flood Warning | DMX | Polk | 4 days |
| May 30, 12:30 PM CDT | Areal Flood Warning | DMX | Boone, Story | 11 hr |
| May 30, 12:53 PM CDT | Areal Flood Warning | DMX | Webster | 6 hr |
| May 30, 12:57 PM CDT | River Flood Warning | DMX | Cerro Gordo, Floyd, Worth | 9 hr |
| May 30, 2:09 PM CDT | Areal Flood Warning | DMX | Greene | 6 hr |
| May 30, 3:34 PM CDT | River Flood Warning | DMX | Black Hawk, Butler | 53 hr |
Nearby
Tornado Warnings in Iowa, 2008Every tornado warning in 2008Tornadoes in 2008
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.