Alert archive / Montana / Snow Advisories in 2006
Snow Advisory 21, NWS Missoula, MT
NWS Missoula, MT issued this snow advisory at Apr 16, 2006, 2:35 PM MDT for 4 counties in Montana; Idaho County, Lemhi County, Idaho. It took effect at Apr 16, 2006, 3:00 PM MDT. It was in force for 21 hr.
The area
The counties it named.
The facts
- Issued
- Apr 16, 2006, 2:35 PM MDT (20:35 UTC)
- In effect from
- Apr 16, 2006, 3:00 PM MDT
- Expired
- Apr 17, 2006, 12:00 PM MDT
- In force
- 21 hr
- Issued by
- NWS Missoula, MT
Counties Idaho County, ID, Lemhi County, ID, Granite County, MT, Lake County, MT, Missoula County, MT, Powell County, MT
The radar
The Missoula radar (KMSX), 65 km from the middle of the area, began a volume at 20:37 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.
The nearest sounding before it
Spokane, WA (KOTX), launched 12:00Z, 8.6 hours before the alert went out and 231 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
- 1367 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS45 KMSO 162035 WSWMSO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 235 PM MDT SUN APR 16 2006 .A DEVELOPING LOW PRESSURE SYSTEM LOCATED OVER NORTHWESTERN NEVADA WILL STRENGTHEN AND MOVE ACROSS THE NORTHERN ROCKIES TONIGHT. AS IT DOES...AN ORGANIZED MID-LEVEL CIRCULATION WILL FORM AND SLOWLY TRAVEL OVER SOUTHWESTERN MONTANA. ABUNDANT MOISTURE COMBINED WITH STRONG ATMOSPHERIC LIFTING AND LOWERING SNOW LEVELS WILL CAUSE SNOW...HEAVY AT TIMES...TO FALL ACROSS MUCH OF CENTRAL IDAHO AS WELL AS WESTERN MONTANA THROUGHOUT THE NIGHT AND INTO MONDAY MORNING. MTZ006-007-170300- /O.UPG.KMSO.WS.A.0018.060417T0000Z-060417T1800Z/ /O.NEW.KMSO.HS.W.0008.060417T0000Z-060417T1800Z/ BITTERROOT/SAPPHIRE MOUNTAINS-BUTTE/BLACKFOOT REGION- 235 PM MDT SUN APR 16 2006 ...HEAVY SNOW WARNING IN EFFECT FROM 6 PM THIS EVENING TO 12 PM MDT MONDAY... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A HEAVY SNOW WARNING...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO 12 PM MDT MONDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. TOTAL SNOW ACCUMULATIONS OF 6 TO 10 INCHES WITH LOCAL AMOUNTS OF UP TO 14 INCHES IN THE HIGHER TERRAIN ARE POSSIBLE BY MID-DAY MONDAY. A HEAVY SNOW WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. CONDITIONS WITH THE HEAVY SNOW WILL BE ESPECIALLY HAZARDOUS FOR OUTDOOR ENTHUSIASTS IN THE HIGHER ELEVATIONS. $$ MTZ043-170300- /O.UPG.KMSO.WS.A.0018.060417T0000Z-060417T1800Z/ /O.NEW.KMSO.SN.Y.0021.060416T2100Z-060417T1800Z/ POTOMAC/SEELEY LAKE REGION- 235 PM MDT SUN APR 16 2006 ...SNOW ADVISORY IN EFFECT UNTIL 12 PM MDT MONDAY... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A SNOW ADVISORY...WHICH IS IN EFFECT UNTIL 12 PM MDT MONDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. TOTAL SNOW ACCUMULATIONS OF 2 TO 5 INCHES WITH LOCALLY HIGHER AMOUNTS ARE EXPECTED BY MID-DAY MONDAY. A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$ IDZ006-170300- /O.UPG.KMSO.WS.A.0018.060417T0000Z-060417T1800Z/ /O.NEW.KMSO.SN.Y.0021.060416T2100Z-060417T1200Z/ SOUTHERN CLEARWATER MOUNTAINS- 135 PM PDT SUN APR 16 2006 ...SNOW ADVISORY IN EFFECT UNTIL 5 AM PDT MONDAY ABOVE 4000 FEET... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A SNOW ADVISORY ABOVE 4000 FEET...WHICH IS IN EFFECT UNTIL 5 AM PDT MONDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. TOTAL SNOW ACCUMULATIONS OF 2 TO 5 INCHES...WITH LOCALLY HIGHER AMOUNTS...CAN BE EXPECTED ABOVE 4000 FEET THROUGH TOMORROW MORNING. THE HEAVIEST SNOW AMOUNTS ARE EXPECTED TO FALL ACROSS THE SOUTHERN HALF OF IDAHO COUNTY. A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$ IDZ009-010-170300- /O.NEW.KMSO.SN.Y.0021.060416T2100Z-060417T1800Z/ WESTERN LEMHI COUNTY-EASTERN LEMHI COUNTY- 235 PM MDT SUN APR 16 2006 ...SNOW ADVISORY IN EFFECT UNTIL 12 PM MDT MONDAY... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A SNOW ADVISORY...WHICH IS IN EFFECT UNTIL 12 PM MDT MONDAY. TOTAL SNOW ACCUMULATIONS OF 2 TO 5 INCHES...WITH LOCALLY HIGHER AMOUNTS...ARE EXPECTED THROUGH MID-DAY TOMORROW. A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$ DICKERSON
4 follow-up statements
000 WWUS45 KMSO 162127 WSWMSO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 327 PM MDT SUN APR 16 2006 .A DEVELOPING LOW PRESSURE SYSTEM LOCATED OVER NORTHWESTERN NEVADA WILL STRENGTHEN AND MOVE ACROSS THE NORTHERN ROCKIES TONIGHT. AS IT DOES...AN ORGANIZED MID-LEVEL CIRCULATION WILL FORM AND SLOWLY TRAVEL OVER SOUTHWESTERN MONTANA. ABUNDANT MOISTURE COMBINED WITH STRONG ATMOSPHERIC LIFTING AND LOWERING SNOW LEVELS WILL CAUSE SNOW...HEAVY AT TIMES...TO FALL ACROSS MUCH OF CENTRAL IDAHO AS WELL AS WESTERN MONTANA THROUGHOUT THE NIGHT AND INTO MONDAY MORNING. MTZ006-007-170315- /O.CON.KMSO.HS.W.0008.060417T0000Z-060417T1800Z/ BITTERROOT/SAPPHIRE MOUNTAINS-BUTTE/BLACKFOOT REGION- 327 PM MDT SUN APR 16 2006 ...HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 12 PM MDT MONDAY... TOTAL SNOW ACCUMULATIONS OF 6 TO 10 INCHES WITH LOCAL AMOUNTS OF UP TO 14 INCHES IN THE HIGHER TERRAIN ARE POSSIBLE BY MID-DAY MONDAY. A HEAVY SNOW WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. CONDITIONS WITH THE HEAVY SNOW WILL BE ESPECIALLY HAZARDOUS FOR OUTDOOR ENTHUSIASTS IN THE HIGHER ELEVATIONS. $$ IDZ009-010-170315- /O.EXT.KMSO.SN.Y.0021.060417T0000Z-060417T1800Z/ WESTERN LEMHI COUNTY-EASTERN LEMHI COUNTY- 327 PM MDT SUN APR 16 2006 ...SNOW ADVISORY NOW IN EFFECT UNTIL 12 PM MDT MONDAY... THE SNOW ADVISORY IS NOW IN EFFECT UNTIL 12 PM MDT MONDAY. TOTAL SNOW ACCUMULATIONS OF 2 TO 5 INCHES...WITH LOCALLY HIGHER AMOUNTS...ARE EXPECTED THROUGH MID-DAY TOMORROW. A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$ MTZ043-170315- /O.EXT.KMSO.SN.Y.0021.060417T0600Z-060417T1800Z/ POTOMAC/SEELEY LAKE REGION- 327 PM MDT SUN APR 16 2006 ...SNOW ADVISORY NOW IN EFFECT FROM MIDNIGHT TONIGHT TO 12 PM MDT MONDAY... THE SNOW ADVISORY IS NOW IN EFFECT FROM MIDNIGHT TONIGHT TO 12 PM MDT MONDAY. TOTAL SNOW ACCUMULATIONS OF 2 TO 5 INCHES WITH LOCALLY HIGHER AMOUNTS ARE EXPECTED BY MID-DAY MONDAY. A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$ IDZ006-170315- /O.CON.KMSO.SN.Y.0021.000000T0000Z-060417T1200Z/ SOUTHERN CLEARWATER MOUNTAINS- 227 PM PDT SUN APR 16 2006 ...SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 AM PDT MONDAY ABOVE 4000 FEET... TOTAL SNOW ACCUMULATIONS OF 2 TO 5 INCHES...WITH LOCALLY HIGHER AMOUNTS...CAN BE EXPECTED ABOVE 4000 FEET THROUGH TOMORROW MORNING. THE HEAVIEST SNOW AMOUNTS ARE EXPECTED TO FALL ACROSS THE SOUTHERN HALF OF IDAHO COUNTY. A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$
000 WWUS45 KMSO 170259 WSWMSO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 859 PM MDT SUN APR 16 2006 .A DEVELOPING LOW PRESSURE SYSTEM LOCATED OVER NORTHWESTERN NEVADA WILL STRENGTHEN AND MOVE ACROSS THE NORTHERN ROCKIES TONIGHT. AS IT DOES...AN ORGANIZED MID-LEVEL CIRCULATION WILL FORM AND SLOWLY TRAVEL OVER SOUTHWESTERN MONTANA. ABUNDANT MOISTURE COMBINED WITH STRONG ATMOSPHERIC LIFTING AND LOWERING SNOW LEVELS WILL CAUSE SNOW...HEAVY AT TIMES...TO FALL ACROSS MUCH OF CENTRAL IDAHO AS WELL AS WESTERN MONTANA THROUGHOUT THE NIGHT AND INTO MONDAY MORNING. MTZ006-007-171000- /O.CON.KMSO.HS.W.0008.000000T0000Z-060417T1800Z/ BITTERROOT/SAPPHIRE MOUNTAINS-BUTTE/BLACKFOOT REGION- 859 PM MDT SUN APR 16 2006 ...HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 12 PM MDT MONDAY... TOTAL SNOW ACCUMULATIONS OF 6 TO 10 INCHES WITH LOCAL AMOUNTS OF UP TO 14 INCHES IN THE HIGHER TERRAIN ARE POSSIBLE BY MID-DAY MONDAY. A HEAVY SNOW WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. CONDITIONS WITH THE HEAVY SNOW WILL BE ESPECIALLY HAZARDOUS FOR OUTDOOR ENTHUSIASTS IN THE HIGHER ELEVATIONS. $$ IDZ009-010-171000- /O.CON.KMSO.SN.Y.0021.000000T0000Z-060417T1800Z/ WESTERN LEMHI COUNTY-EASTERN LEMHI COUNTY- 859 PM MDT SUN APR 16 2006 ...SNOW ADVISORY REMAINS IN EFFECT UNTIL 12 PM MDT MONDAY... TOTAL SNOW ACCUMULATIONS OF 2 TO 5 INCHES...WITH LOCALLY HIGHER AMOUNTS...ARE EXPECTED THROUGH MID-DAY TOMORROW. A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$ MTZ043-171000- /O.CON.KMSO.SN.Y.0021.060417T0600Z-060417T1800Z/ POTOMAC/SEELEY LAKE REGION- 859 PM MDT SUN APR 16 2006 ...SNOW ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 12 PM MDT MONDAY... A SNOW ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 12 PM MDT MONDAY. TOTAL SNOW ACCUMULATIONS OF 2 TO 5 INCHES WITH LOCALLY HIGHER AMOUNTS ARE EXPECTED BY MID-DAY MONDAY. A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$ IDZ006-171000- /O.CON.KMSO.SN.Y.0021.000000T0000Z-060417T1200Z/ SOUTHERN CLEARWATER MOUNTAINS- 759 PM PDT SUN APR 16 2006 ...SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 AM PDT MONDAY ABOVE 4000 FEET... TOTAL SNOW ACCUMULATIONS OF 2 TO 5 INCHES...WITH LOCALLY HIGHER AMOUNTS...CAN BE EXPECTED ABOVE 4000 FEET THROUGH TOMORROW MORNING. THE HEAVIEST SNOW AMOUNTS ARE EXPECTED TO FALL ACROSS THE SOUTHERN HALF OF IDAHO COUNTY. A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$
000 WWUS45 KMSO 170922 WSWMSO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 322 AM MDT MON APR 17 2006 .A LOW PRESSURE SYSTEM WILL CONTINUE TO FOCUS THE BULK OF THE MOISTURE OVER WEST-CENTRAL MONTANA AND SOUTHERN IDAHO COUNTY THIS MORNING. MOUNTAIN PASSES OVER THE CONTINENTAL DIVIDE WILL SEE ADDITIONAL SNOW...HEAVY AT TIMES DURING THE MORNING. CONDITIONS WILL BE IMPROVING BY THIS AFTERNOON AS STEADY SNOW TAPERS OFF TO SNOW SHOWERS. IDZ009-010-171030- /O.CAN.KMSO.SN.Y.0021.000000T0000Z-060417T1800Z/ WESTERN LEMHI COUNTY-EASTERN LEMHI COUNTY- 322 AM MDT MON APR 17 2006 ...SNOW ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS CANCELED THE SNOW ADVISORY. LIGHT SNOW IS EXPECTED TODAY BUT ACCUMULATING SNOW WILL BE CONFINED TO THE HIGHER MOUNTAINS. $$ MTZ006-007-171800- /O.CON.KMSO.HS.W.0008.000000T0000Z-060417T1800Z/ BITTERROOT/SAPPHIRE MOUNTAINS-BUTTE/BLACKFOOT REGION- 322 AM MDT MON APR 17 2006 ...HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL NOON MDT TODAY... A HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL NOON MDT TODAY. TOTAL SNOW ACCUMULATIONS OF 8 TO 12 INCHES ARE EXPECTED BY NOONTIME. HEAVIEST SNOWFALL WILL BE OVER THE MOUNTAIN PASSES MAKING TRAVEL DIFFICULT. $$ IDZ006-171800- /O.EXT.KMSO.SN.Y.0021.000000T0000Z-060417T1800Z/ SOUTHERN CLEARWATER MOUNTAINS- 222 AM PDT MON APR 17 2006 ...SNOW ADVISORY NOW IN EFFECT UNTIL 11 AM PDT THIS MORNING ABOVE 4000 FEET... THE SNOW ADVISORY ABOVE 4000 FEET IS NOW IN EFFECT UNTIL 11 AM PDT THIS MORNING. AN ADDITIONAL 2 TO 4 INCHES OF NEW SNOW ACCUMULATION CAN BE EXPECTED THIS MORNING ABOVE 4000 FEET. A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$ MTZ043-171800- /O.CON.KMSO.SN.Y.0021.000000T0000Z-060417T1800Z/ POTOMAC/SEELEY LAKE REGION- 322 AM MDT MON APR 17 2006 ...SNOW ADVISORY REMAINS IN EFFECT UNTIL NOON MDT TODAY... A SNOW ADVISORY REMAINS IN EFFECT UNTIL NOON MDT TODAY. TOTAL SNOW ACCUMULATIONS OF 2 TO 5 INCHES...LOCALLY UP TO 7 INCHES HIGHER TERRAIN EXPECTED BY MID-DAY MONDAY. $$
000 WWUS45 KMSO 171745 WSWMSO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 1145 AM MDT MON APR 17 2006 MTZ006-007-171845- /O.EXP.KMSO.HS.W.0008.000000T0000Z-060417T1800Z/ BITTERROOT/SAPPHIRE MOUNTAINS-BUTTE/BLACKFOOT REGION- 1145 AM MDT MON APR 17 2006 ...HEAVY SNOW WARNING WILL EXPIRE AT NOON MDT TODAY... THE AREA OF LOW PRESSURE WHICH PRODUCED MODERATE TO HEAVY SNOW OVERNIGHT AND THROUGH THIS MORNING HAS MOVED EAST. THUS THE HEAVY SNOW WARNING WILL BE ALLOWED TO EXPIRE AT NOON. SCATTERED LIGHT SNOW SHOWERS WILL CONTINUE ACROSS THE AREA THIS AFTERNOON PRODUCING ADDITIONAL ACCUMULATIONS OF UP TO ONE INCH. $$ MTZ043-171845- /O.EXP.KMSO.SN.Y.0021.000000T0000Z-060417T1800Z/ POTOMAC/SEELEY LAKE REGION- 1145 AM MDT MON APR 17 2006 ...SNOW ADVISORY WILL EXPIRE AT NOON MDT TODAY... THE AREA OF LOW PRESSURE WHICH PRODUCED LIGHT TO MODERATE SNOW SHOWERS OVERNIGHT AND THROUGH THIS MORNING HAS MOVED EAST. THUS THE HEAVY SNOW WARNING WILL BE ALLOWED TO EXPIRE AT NOON. SCATTERED LIGHT SNOW SHOWERS WILL CONTINUE ACROSS THE AREA THIS AFTERNOON PRODUCING ADDITIONAL ACCUMULATIONS OF UP TO ONE INCH. $$ IDZ006-171845- /O.EXP.KMSO.SN.Y.0021.000000T0000Z-060417T1800Z/ SOUTHERN CLEARWATER MOUNTAINS- 1045 AM PDT MON APR 17 2006 ...SNOW ADVISORY WILL EXPIRE AT 11 AM PDT THIS MORNING ABOVE 4000 FEET... THE AREA OF LOW PRESSURE WHICH PRODUCED LIGHT TO MODERATE SNOW SHOWERS OVERNIGHT AND THROUGH THIS MORNING HAS MOVED EAST. THUS THE HEAVY SNOW WARNING WILL BE ALLOWED TO EXPIRE AT NOON. SCATTERED LIGHT SNOW SHOWERS WILL CONTINUE ACROSS THE AREA THIS AFTERNOON PRODUCING ADDITIONAL ACCUMULATIONS OF UP TO ONE INCH. IN ADDITIONS...ISOLATED THUNDERSTORMS ARE ALSO POSSIBLE THIS AFTERNOON PRODUCING BRIEF HEAVIER SNOW SHOWERS. $$
The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 16, 5:27 AM MDT | Winter Storm Watch | MSO | Deer Lodge, Granite, Lake, Missoula, Powell, Ravalli and 1 more | 9 hr |
| Apr 16, 2:35 PM MDT | Heavy Snow Warning | MSO | Deer Lodge, Granite, Missoula, Powell, Ravalli, Silver Bow | 21 hr |
Nearby
Snow Advisories in Montana, 2006Snow Advisories in Idaho, 2006Every snow advisory in 2006
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.