Alert archive / Iowa / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 75, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at May 6, 2012, 7:05 AM CDT for 4 counties in Iowa. It was in force for 25 min. 2 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 6, 2012, 7:05 AM CDT (12:05 UTC)
- Expired
- May 6, 2012, 7:30 AM CDT
- In force
- 25 min
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Adair County, IA, Dallas County, IA, Guthrie County, IA, Madison County, IA
The radar
The Des Moines radar (KDMX), 72 km from the middle of the area, began a volume at 12:05 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 6, 7:05 AM CDT | TSTM WND GST 65 | 6 Wsw Greenfield, IA | MEASURED BY KCCI SCHOOLNET SITE AT NODAWAY VALLEY SCHOOL. |
| May 6, 7:23 AM CDT | TSTM WND GST 77 | 8 Ene Greenfield, IA | ALSO MEASURED A 73 MPH GUST AT 726 AM. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 0.1 hours before the alert went out and 160 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
- 880 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- -415 m²/s²
- 0-3 km storm-relative helicity
- -233 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
560 WUUS53 KDMX 061205 SVRDMX IAC001-049-077-121-061230- /O.NEW.KDMX.SV.W.0075.120506T1205Z-120506T1230Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE DES MOINES IA 705 AM CDT SUN MAY 6 2012 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN ADAIR COUNTY IN SOUTHWEST IOWA... SOUTHWESTERN DALLAS COUNTY IN CENTRAL IOWA... SOUTHEASTERN GUTHRIE COUNTY IN WEST CENTRAL IOWA... NORTHWESTERN MADISON COUNTY IN SOUTH CENTRAL IOWA... * UNTIL 730 AM CDT * AT 701 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 11 MILES NORTHWEST OF GREENFIELD...OR 20 MILES EAST OF ATLANTIC...AND MOVING EAST AT 40 MPH. * LOCATIONS IMPACTED INCLUDE... GREENFIELD...STUART...CASEY...MENLO...DEXTER AND REDFIELD. THIS INCLUDES INTERSTATE 80 BETWEEN MILE MARKERS 74 AND 102. PRECAUTIONARY/PREPAREDNESS ACTIONS... MOVE TO AN INTERIOR ROOM AND STAY AWAY FROM WINDOWS. IF YOU ARE IN A MOBILE HOME...GET OUT NOW...AND SEEK SHELTER IN A REINFORCED BUILDING. && LAT...LON 4127 9465 4149 9470 4162 9417 4132 9411 TIME...MOT...LOC 1205Z 262DEG 33KT 4140 9457 WIND...HAIL 60MPH <.75IN $$ ZOGG
1 follow-up statement
680
WWUS53 KDMX 061217
SVSDMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
717 AM CDT SUN MAY 6 2012
IAC001-049-077-121-061230-
/O.CON.KDMX.SV.W.0075.000000T0000Z-120506T1230Z/
MADISON IA-GUTHRIE IA-ADAIR IA-DALLAS IA-
717 AM CDT SUN MAY 6 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
DALLAS...NORTHEASTERN ADAIR...SOUTHEASTERN GUTHRIE AND NORTHWESTERN
MADISON COUNTIES UNTIL 730 AM CDT...
AT 715 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 7 MILES
NORTH OF GREENFIELD...OR 25 MILES NORTH OF CRESTON...MOVING EAST AT
40 MPH.
LOCATIONS IMPACTED INCLUDE...
STUART...MENLO...DEXTER AND REDFIELD.
THIS INCLUDES INTERSTATE 80 BETWEEN MILE MARKERS 77 AND 102.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PREPARE FOR LARGE HAIL...DAMAGING WINDS AND DEADLY CLOUD TO GROUND
LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY
INSIDE A REINFORCED BUILDING AND AWAY FROM WINDOWS.
&&
LAT...LON 4130 9450 4139 9453 4150 9464 4162 9417
4132 9411
TIME...MOT...LOC 1217Z 262DEG 33KT 4141 9442
WIND...HAIL 60MPH 1.00IN
$$
ZOGGThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 6, 4:32 AM CDT | Severe Thunderstorm Warning | DMX | Hamilton, Wright | 43 min |
| May 6, 5:52 AM CDT | Severe Thunderstorm Warning | DMX | Audubon, Guthrie | 53 min |
| May 6, 6:30 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Cass | 45 min |
| May 6, 7:09 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Madison | 22 min |
| May 6, 7:29 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Dallas, Guthrie, Madison | 31 min |
| May 6, 7:59 AM CDT | Severe Thunderstorm Warning | DMX | Dallas, Polk | 46 min |
| May 6, 8:27 AM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marion, Polk, Warren | 48 min |
| May 6, 9:03 AM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marion | 42 min |
| May 6, 9:12 AM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marion | 48 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 2012Every severe thunderstorm warning in 2012
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.