NHRA altitude correction factors

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NHRA altitude correction factors

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NHRA altitude correction factors

Below are the NHRA Altitude Correction formulas for all sportsman categories for NHRA member tracks that are classified as altitude facilities:

NHRA ALTITUDE CORRECTION FACTORS Comp, S/C, S/G, S/ST
		Convert to Sea Level				Convert to Altitude
Track Name	Alt	ET	MPH	1/2ET	1/2MPH	ET	MPH	1/2ET	1/2MPH
DIVISION 4
Amarillo, TX	3700	.9646	1.0337	.9823	1.0168	1.0367	.9674	1.0180	.9834
Roswell, NM	3700	.9646	1.0337	.9823	1.0168	1.0367	.9674	1.0180	.9834

DIVISION 5
Denver, CO	5800	.9405	1.0563	.9702	1.0281	1.0633	.9467	1.0307	.9726
Douglas, WY	4900	.9508	1.0466	.9754	1.0233	1.0517	.9555	1.0252	.9772
Grand Junction, CO	4800	.9520	1.0455	.9760	1.0228	1.0504	.9565	1.0246	.9777
Great Bend, KS	1900	.9853	1.0143	.9927	1.0072	1.0149	.9859	1.0074	.9929
Julesburg, CO	3500	.9669	1.0315	.9835	1.0158	1.0342	.9694	1.0168	.9845
Kearney, Neb.	2100	.9830	1.0165	.9915	1.0082	1.0173	.9838	1.0086	.9918
Pierre, S.D.	1700	.9876	1.0122	.9938	1.0061	1.0126	.9880	1.0062	.9940
Pueblo, CO	4900	.9508	1.0466	.9754	1.0233	1.0517	.9555	1.0252	.9772

DIVISION 6
Acton, MT	3700	.9646	1.0337	.9823	1.0168	1.0367	.9674	1.0180	.9834
Anaconda, MT	5100	.9485	1.0488	.9743	1.0244	1.0543	.9535	1.0264	.9762
Ashcroft, CAN	1700	.9876	1.0122	.9938	1.0061	1.0126	.9880	1.0062	.9940
Boise, ID	2700	.9761	1.0229	.9881	1.0115	1.0245	.9776	1.0121	.9887
Lewistown, MT	4100	.9600	1.0380	.9800	1.0190	1.0416	.9634	1.0204	.9814
Medicine Hat, CAN	2400	.9796	1.0197	.9898	1.0098	1.0209	.9807	1.0103	.9903
Prince George, BC	2200	.9819	1.0175	.9909	1.0088	1.0185	.9828	1.0092	.9913
Saskatoon, CAN	1600	.9888	1.0111	.9944	1.0055	1.0114	.9890	1.0057	.9945
Spokane, WA.	2300	.9807	1.0186	.9904	1.0093	1.0197	.9817	1.0097	.9908

DIVISION 7
Albuquerque, NM	5400	.9451	1.0520	.9725	1.0260	1.0581	.9506	1.0282	.9747
Fallon, NV	4000	.9612	1.0369	.9806	1.0185	1.0404	.9644	1.0198	.9819
Inyokern, CA	2400	.9796	1.0197	.9898	1.0098	1.0209	.9807	1.0103	.9903
Las Vegas, NV	2100	.9830	1.0165	.9915	1.0082	1.0173	.9838	1.0086	.9918
Tucson, AZ	3000	.9727	1.0262	.9863	1.0131	1.0281	.9745	1.0139	.9871

NOTE: Supercharged and/or turbocharged cars (i.e.: AA/A, AA/AT, BB/A, BB/AT, A/PM and AA/PM) use half factor; TA/D and TA/FC cars are not factored.

NHRA ALTITUDE CORRECTION FACTORS Stock & Super Stock
		Convert to Sea Level		Convert to Altitude
Track Name	Alt	ET	MPH	ET	MPH
DIVISION 4
Amarillo, TX	3700	.9549	1.0479	1.0472	.9543
Roswell, NM	3700	.9549	1.0479	1.0472	.9543

DIVISION 5
Denver, CO	5800	.9276	1.0773	1.0781	.9282
Douglas, WY	4900	.9393	1.0647	1.0646	.9392
Grand Junction, CO	4800	.9406	1.0633	1.0632	.9405
Great Bend, KS	1900	.9783	1.0227	1.0222	.9778
Julesburg, CO	3500	.9575	1.0451	1.0444	.9568
Kearney, Neb.	2100	.9757	1.0255	1.0249	.9751
Pierre, S.D.	1700	.9809	1.0199	1.0195	.9805
Pueblo, CO	4900	.9393	1.0647	1.0646	.9392

DIVISION 6
Acton, MT	3700	.9549	1.0479	1.0472	.9543
Anaconda, MT	5100	.9367	1.0675	1.0676	.9368
Ashcroft, CAN	1700	.9809	1.0199	1.0195	.9805
Boise, ID	2700	.9679	1.0339	1.0332	.9672
Lewistown, MT	4100	.9497	1.0535	1.0530	.9492
Medicine Hat, CAN	2400	.9718	1.0297	1.0290	.9712
Prince George, BC	2200	.9744	1.0269	1.0263	.9738
Saskatoon, CAN	1600	.9822	1.0185	1.0181	.9818
Spokane, WA.	2300	.9731	1.0283	1.0276	.9725

DIVISION 7
Albuquerque	5400	.9328	1.0717	1.0720	.9331
Fallon, NV	4000	.9510	1.0521	1.0515	.9505
Inyokern, CA	2400	.9718	1.0297	1.0290	.9712
Las Vegas, NV	2100	.9757	1.0255	1.0249	.9751
Tucson, AZ	3000	.9640	1.0381	1.0373	.9633

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What was your highlight from the 50th annual Kragen O'Reilly NHRA Winternationals presented by Valvoline?

	John Force's win
	Larry Dixon's win
	Golden 50 Corral
	Cacklefests
	Legends autograph sessions